rpl:start

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rpl:start [2019/02/17 12:33] (current) pier4r Editing functions related to random integers and sequences |
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+ | About RPL programming and what not. | ||

+ | |||

+ | The page can grow and then be split in different pages, using this as starting point. | ||

+ | |||

+ | ===== Library of useful commands ===== | ||

+ | See also this thread on the MoHPC: http://www.hpmuseum.org/forum/thread-10271.html | ||

+ | |||

+ | <file> | ||

+ | %%HP: T(0)A(D)F(.); | ||

+ | @ alternative found online %%HP: T(3)A(R)F(.); | ||

+ | @ You may edit the T(0)A(D)F(.) parts. | ||

+ | @ The earlier parts of the line are used by Debug4x. | ||

+ | |||

+ | @ in npp, just select language "normal" to get rid of the highlight. | ||

+ | |||

+ | DIR | ||

+ | |||

+ | helpTemplate | ||

+ | " | ||

+ | url: '-', | ||

+ | tags: [ 'help', 'template' ], | ||

+ | description: | ||

+ | this is a template for quick use. Feel free to improve it. | ||

+ | |||

+ | Input: | ||

+ | L3: | ||

+ | L2: | ||

+ | L1: | ||

+ | Output | ||

+ | L3: | ||

+ | L2: | ||

+ | L1: | ||

+ | | ||

+ | Example(s): | ||

+ | " | ||

+ | | ||

+ | @################################## | ||

+ | @# | ||

+ | @# vector or matrix operations | ||

+ | |||

+ | @ url: '-', | ||

+ | @ tags: [ 'vector operations' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 9-20 | ||

+ | @ it transforms a row vector like [1 2 3] | ||

+ | @ in a column vector that is a matrix | ||

+ | @ and viceversa | ||

+ | | ||

+ | @input: | ||

+ | @L1: a row vector like [1 2 3] | ||

+ | rowVtoColV | ||

+ | \<< | ||

+ | OBJ\-> 1 + \->ARRY | ||

+ | \>> | ||

+ | | ||

+ | @input: | ||

+ | @L1: a colum vector like [[1] [2] [3]] (that is, a matrix) | ||

+ | colVtorowV | ||

+ | \<< | ||

+ | OBJ\-> @explode the matrix | ||

+ | OBJ\-> @explode the dimension list | ||

+ | DROP @keep only the first dimension, the number of rows | ||

+ | \->ARRY @make a vector. | ||

+ | \>> | ||

+ | | ||

+ | @ url: '-', | ||

+ | @ tags: [ 'vector operations' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 10-11 | ||

+ | infoColVtoRowV | ||

+ | "See also the command RDM that shoudl be more efficient" | ||

+ | | ||

+ | @ url: '-', | ||

+ | @ tags: [ 'vector operations' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 9-23 | ||

+ | @ it transforms a list in a vector like [1 2 3] | ||

+ | listToVector | ||

+ | \<< | ||

+ | OBJ\-> 1 \->LIST \->ARRY | ||

+ | \>> | ||

+ | | ||

+ | @ url: '-', | ||

+ | @ tags: [ 'vector', 'angle between vectors' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 9-16 | ||

+ | @ and math.stackexchange.com/questions/1047649/distance-and-angle-between-vectors-in-multiple-dimensions | ||

+ | | ||

+ | @input | ||

+ | @L2: row vector | ||

+ | @L1: row vector | ||

+ | angleBetweenTwoVectors | ||

+ | \<< | ||

+ | | ||

+ | \-> | ||

+ | @input | ||

+ | lvVector1 | ||

+ | lvVector2 | ||

+ | | ||

+ | \<< | ||

+ | lvVector1 lvVector2 DOT | ||

+ | | ||

+ | lvVector1 ABS | ||

+ | lvVector2 ABS | ||

+ | * | ||

+ | | ||

+ | / | ||

+ | ACOS | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @ url: '-', | ||

+ | @ tags: [ 'vector', 'angle between vectors' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 9-16 | ||

+ | @ and math.stackexchange.com/questions/1047649/distance-and-angle-between-vectors-in-multiple-dimensions | ||

+ | | ||

+ | @input | ||

+ | @L2: arm of the force vector | ||

+ | @L1: force vector | ||

+ | @output | ||

+ | @L2: moment vector | ||

+ | @L1: angle used to compute the norm of the moment vector | ||

+ | @ between force vector and arm of the force vector | ||

+ | | ||

+ | momentOfAForce | ||

+ | \<< | ||

+ | 0 @lvVectorMoment | ||

+ | | ||

+ | \-> | ||

+ | @input | ||

+ | lvVectorArmForce | ||

+ | lvVectorForce | ||

+ | @var | ||

+ | lvVectorMoment | ||

+ | | ||

+ | \<< | ||

+ | lvVectorArmForce lvVectorForce CROSS | ||

+ | DUP | ||

+ | 'lvVectorMoment' STO | ||

+ | "momentVector" \->TAG | ||

+ | | ||

+ | @computing the angle X such that | ||

+ | @ norm(Moment) = norm(Force) * norm(armForce) * sin(X) | ||

+ | lvVectorMoment ABS | ||

+ | | ||

+ | lvVectorArmForce ABS | ||

+ | lvVectorForce ABS | ||

+ | * | ||

+ | / | ||

+ | ASIN | ||

+ | "Angle" \->TAG | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @info | ||

+ | @ url: 'www.hpmuseum.org/forum/thread-3786-post-82450.html#pid82450', | ||

+ | @ tags: [ 'matrix operations' ], | ||

+ | @ description: | ||

+ | @ interesting link about applying a function to a matrix. | ||

+ | infoApplyFuncToMatrix | ||

+ | "[[ -9 0 -1 -4 ] | ||

+ | [ 4 9 3 3 ] | ||

+ | [ 0 4 -9 9 ] | ||

+ | [ 5 -1 -6 -4 ]] | ||

+ | | ||

+ | 'LN(X)' DIAGMAP XNUM | ||

+ | " | ||

+ | | ||

+ | @ url: '-', | ||

+ | @ tags: [ 'vector', 'equation of a plane' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 9-17 | ||

+ | @ and math.stackexchange.com/questions/753113/how-to-find-an-equation-of-the-plane-given-its-normal-vector-and-a-point-on-the | ||

+ | @ Given a normal vector to a plane and a point in it, return a vector that defines | ||

+ | @ the equation of the plane. | ||

+ | | ||

+ | @Remarks: | ||

+ | @ no input check, the vectors should have 3 components otherwise the program | ||

+ | @ does not work as intended. | ||

+ | @input | ||

+ | @L2: normal vector to the plane | ||

+ | @L1: point in the plane | ||

+ | @output | ||

+ | @L1: a vector defining the coefficients for the axis | ||

+ | @ X,Y,Z plus a constant. | ||

+ | @ Say the result will be [4 6 2 -24] if the equation of the plane is | ||

+ | @ 4x+6y+2z-24=0 . | ||

+ | eqPlaneNormalVandPoint | ||

+ | \<< | ||

+ | | ||

+ | \-> | ||

+ | lvNormalVector | ||

+ | lvPointInPlane | ||

+ | | ||

+ | \<< | ||

+ | lvNormalVector | ||

+ | lvNormalVector lvPointInPlane DOT | ||

+ | 4 @remember it works only for 3 dimensional vectors | ||

+ | COL+ | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @ url: '-', | ||

+ | @ tags: [ 'matrix', 'from a series of list to a matrix' ], | ||

+ | @ description: | ||

+ | @ see 50g user manual page 10-14 | ||

+ | | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as columns | ||

+ | lists2matrixColumns | ||

+ | \<< | ||

+ | DUP | ||

+ | \-> n | ||

+ | \<< | ||

+ | 1 SWAP | ||

+ | FOR j | ||

+ | OBJ\-> \->ARRY | ||

+ | IF | ||

+ | j n < | ||

+ | THEN | ||

+ | j 1 + | ||

+ | ROLL | ||

+ | END | ||

+ | NEXT | ||

+ | | ||

+ | IF | ||

+ | n 1 > | ||

+ | THEN | ||

+ | 1 n 1 - | ||

+ | FOR j | ||

+ | j 1 + | ||

+ | ROLL | ||

+ | NEXT | ||

+ | END | ||

+ | n | ||

+ | COL\-> | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as rows | ||

+ | lists2matrixRows | ||

+ | \<< | ||

+ | DUP | ||

+ | \-> n | ||

+ | \<< | ||

+ | 1 SWAP | ||

+ | FOR j | ||

+ | OBJ\-> \->ARRY | ||

+ | IF | ||

+ | j n < | ||

+ | THEN | ||

+ | j 1 + | ||

+ | ROLL | ||

+ | END | ||

+ | NEXT | ||

+ | | ||

+ | IF | ||

+ | n 1 > | ||

+ | THEN | ||

+ | 1 n 1 - | ||

+ | FOR j | ||

+ | j 1 + | ||

+ | ROLL | ||

+ | NEXT | ||

+ | END | ||

+ | n | ||

+ | ROW\-> | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @alternative solution | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as columns | ||

+ | lists2matrixColumnsNo2 | ||

+ | \<< | ||

+ | @note that we do not consume as input, immediately, | ||

+ | @all the lists | ||

+ | | ||

+ | 0 "lvInputLists" DROP | ||

+ | | ||

+ | \-> | ||

+ | @input | ||

+ | lvListsNumber | ||

+ | @var | ||

+ | lvInputLists | ||

+ | | ||

+ | \<< | ||

+ | lvListsNumber \->LIST | ||

+ | @put the lists in one big list | ||

+ | @ as { 1 } { 2 } 2 \->LIST produces { {1} {2} } | ||

+ | 'lvInputLists' STO | ||

+ | | ||

+ | lvInputLists | ||

+ | 1 | ||

+ | \<< | ||

+ | listToVector @program included before | ||

+ | \>> | ||

+ | DOSUBS | ||

+ | @we have a list of row vectors now | ||

+ | | ||

+ | @explode the list and make a matrix | ||

+ | OBJ\-> | ||

+ | COL\-> | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @alternative solution | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as rows | ||

+ | lists2matrixRowsNo2 | ||

+ | \<< | ||

+ | @note that we do not consume as input, immediately, | ||

+ | @all the lists | ||

+ | | ||

+ | 0 "lvInputLists" DROP | ||

+ | | ||

+ | \-> | ||

+ | @input | ||

+ | lvListsNumber | ||

+ | @var | ||

+ | lvInputLists | ||

+ | | ||

+ | \<< | ||

+ | lvListsNumber \->LIST | ||

+ | @put the lists in one big list | ||

+ | @ as { 1 } { 2 } 2 \->LIST produces { {1} {2} } | ||

+ | 'lvInputLists' STO | ||

+ | | ||

+ | lvInputLists | ||

+ | 1 | ||

+ | \<< | ||

+ | listToVector @program included before | ||

+ | \>> | ||

+ | DOSUBS | ||

+ | @we have a list of row vectors now | ||

+ | | ||

+ | @explode the list and make a matrix | ||

+ | OBJ\-> | ||

+ | ROW\-> | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @alternative solution | ||

+ | @ REMARKS: | ||

+ | @ - using listExt www.hpcalc.org/details/7971 | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as rows | ||

+ | lists2matrixRowsNo3 | ||

+ | \<< | ||

+ | @note that we do not consume as input, immediately, | ||

+ | @all the lists | ||

+ | | ||

+ | 0 "lvInputLists" DROP | ||

+ | 0 "lvSingleListSize" DROP | ||

+ | | ||

+ | \-> | ||

+ | @input | ||

+ | lvListsNumber | ||

+ | @var | ||

+ | lvInputLists | ||

+ | lvSingleListSize | ||

+ | | ||

+ | \<< | ||

+ | @get one list size, presuming equal dimension for all. | ||

+ | DUP SIZE 'lvSingleListSize' STO | ||

+ | | ||

+ | lvListsNumber \->LIST | ||

+ | @put the lists in one big list | ||

+ | @ as { 1 } { 2 } 2 \->LIST produces { {1} {2} } | ||

+ | 'lvInputLists' STO | ||

+ | | ||

+ | lvInputLists LXIL @explodes all sublists | ||

+ | listToVector @program included before | ||

+ | |||

+ | @we have one row vector now | ||

+ | lvListsNumber @rows | ||

+ | lvSingleListSize @columns | ||

+ | 2 \->LIST | ||

+ | RDM | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @alternative solution | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as columns | ||

+ | lists2matrixColumnsNo3 | ||

+ | \<< | ||

+ | lists2matrixRowsNo3 | ||

+ | TRAN | ||

+ | \>> | ||

+ | | ||

+ | @alternative solution | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as rows | ||

+ | lists2matrixRowsNo4 | ||

+ | \<< | ||

+ | \->LIST | ||

+ | @put the lists in one big list | ||

+ | @ as { 1 } { 2 } 2 \->LIST produces { {1} {2} } | ||

+ | AXL | ||

+ | \>> | ||

+ | | ||

+ | @alternative solution | ||

+ | @input | ||

+ | @L2-Ln+1: n lists of the same dimension | ||

+ | @L1: number of lists to consider on the stack | ||

+ | @output | ||

+ | @L1: a matrix with the lists as columns | ||

+ | lists2matrixColumnsNo4 | ||

+ | \<< | ||

+ | lists2matrixRowsNo4 | ||

+ | TRAN | ||

+ | \>> | ||

+ | | ||

+ | @input | ||

+ | @L1: a matrix | ||

+ | @output | ||

+ | @L1: list representing the rows of a matrix in sublists | ||

+ | matrixRows2list | ||

+ | "just use AXL" | ||

+ | | ||

+ | @input | ||

+ | @L1: a matrix | ||

+ | @output | ||

+ | @L1: list representing the columns of a matrix in sublists | ||

+ | matrixColumns2list | ||

+ | \<< | ||

+ | TRAN | ||

+ | AXL | ||

+ | \>> | ||

+ | | ||

+ | MTRANSPOSEhelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-8209-post-111256.html#pid111256', | ||

+ | tags: [ 'matrix', 'transpose' ], | ||

+ | description: | ||

+ | matrix transpose through lists faster than built in TRAN | ||

+ | |||

+ | Remarks: listExt used. See links collection in this file. | ||

+ | |||

+ | Input: | ||

+ | a matrix. | ||

+ | output: | ||

+ | a matrix transposed. | ||

+ | " | ||

+ | | ||

+ | MTRANSPOSE | ||

+ | \<< | ||

+ | AXL DUP LXIL SWAP SIZE LDIST AXL | ||

+ | \>> | ||

+ | | ||

+ | @################################## | ||

+ | @# | ||

+ | @# 50g filesystem operations | ||

+ | | ||

+ | @ url: 'www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv016.cgi?read=103110', | ||

+ | @ tags: [ 'directory management', 'sorting variables', 'file manager' ], | ||

+ | @ description: 'the code orders the contents of a directory and subdirectories', | ||

+ | @ Download to 49(and 50) series in exact mode. | ||

+ | @ | ||

+ | @ !! | ||

+ | @ Recursive program; change ProgName within program to whatever | ||

+ | @ !! | ||

+ | @ | ||

+ | @ name is chosen for storing the program. | ||

+ | @ Results from the BYTES command: | ||

+ | @ 48G series: | ||

+ | @ Checksum: # 5394h | ||

+ | @ Size: 129 | ||

+ | @ 49 series: | ||

+ | @ Checksum: # C209h | ||

+ | @ Size: 125. | ||

+ | orderDirContents | ||

+ | \<< @ Begin program. | ||

+ | VARS @ Get list of variables. | ||

+ | DUP @ Copy of variables list. | ||

+ | IF @ | ||

+ | SIZE @ Variables list not empty? | ||

+ | THEN | ||

+ | SORT @ Sort list to ASCII order. | ||

+ | ORDER @ Reorder variables. | ||

+ | 15 TVARS @ Get list of subdirectories. | ||

+ | DUP @ Copy of subdirectories list | ||

+ | SIZE @ Number of subdirectories. | ||

+ | IF @ | ||

+ | DUP @ Subdirectories list not empty? | ||

+ | THEN @ | ||

+ | OVER @ Copy of subdirectory list. | ||

+ | ORDER @ Move subdirectories to front. | ||

+ | 1 @ Loop begin index. | ||

+ | SWAP @ Move down number of subdirectories. | ||

+ | FOR n @ For each subdirectory. | ||

+ | DUP @ Copy of subdirectory list. | ||

+ | n GET @ Get subdirectory name. | ||

+ | EVAL @ Make subdirectory current. | ||

+ | ProgName @ Call this program recursively. | ||

+ | UPDIR @ Return to parent directory. | ||

+ | NEXT @ | ||

+ | DROP @ Discard subdirectories list. | ||

+ | ELSE @ | ||

+ | DROP2 @ Discard empty subdirectories list and size 0. | ||

+ | END @ | ||

+ | ELSE @ | ||

+ | DROP @ Discard empty variables list. | ||

+ | END | ||

+ | \>> @ End program. | ||

+ | |||

+ | |||

+ | @################################## | ||

+ | @# | ||

+ | @# Math operations | ||

+ | | ||

+ | @url: 'www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv016.cgi?read=105876', | ||

+ | @tags: [ 'polar', 'rectangular', 'coordinate system' ], | ||

+ | @description: 'several userRPL programs to switch from polar to rectangular | ||

+ | @ representation of numbers', | ||

+ | |||

+ | @ 2 dimensional P\->R program. | ||

+ | @ Arguments: 2 reals representing r and theta. | ||

+ | @ Returns: 2 reals representing x and y. | ||

+ | polar2rect | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | ROT ROT @ Move flags list to level 3. | ||

+ | @ On 49 series, UNROT may be used | ||

+ | @ instead of ROT ROT. | ||

+ | CYLIN @ Force cylindrical display mode. | ||

+ | @ SPHERE would work as well here. | ||

+ | \->V2 @ Combine into vector or complex. | ||

+ | RECT @ Force rectangular display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | ROT @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 2 dimensional R\->P program. | ||

+ | @ Arguments: 2 reals representing x and y. | ||

+ | @ Returns: 2 reals representing r and theta. | ||

+ | rect2polar | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | ROT ROT @ Move flags list to level 3. | ||

+ | @ On 49 series, UNROT may be used | ||

+ | @ instead of ROT ROT. | ||

+ | RECT @ Force rectangular display mode. | ||

+ | \->V2 @ Combine into vector or complex. | ||

+ | CYLIN @ Force cylindrical display mode. | ||

+ | @ SPHERE would work as well here. | ||

+ | V\-> @ Decompose into reals. | ||

+ | ROT @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 3 dimensional Cylindrical\->Rectangular program. | ||

+ | @ Arguments: 3 reals representing r, theta, and z. | ||

+ | @ Returns: 3 reals representing x, y, and z. | ||

+ | cylindrical2rectangular | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | 4 ROLLD @ Move flags list to level 4. | ||

+ | CYLIN @ Force cylindrical display mode. | ||

+ | \->V3 @ Combine into vector. | ||

+ | RECT @ Force rectangular display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | 4 ROLL @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 3 dimensional Rectangular\->Cylindrical program. | ||

+ | @ Arguments: 3 reals representing x, y, and z. | ||

+ | @ Returns: 3 reals representing r, theta, and z. | ||

+ | rectangular2cylindrical | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | 4 ROLLD @ Move flags list to level 4. | ||

+ | RECT @ Force rectangular display mode. | ||

+ | \->V3 @ Combine into vector. | ||

+ | CYLIN @ Force cylindrical display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | 4 ROLL @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 3 dimensional Spherical\->Rectangular program. | ||

+ | @ Arguments: 3 reals representing rho, phi, and theta. | ||

+ | @ Returns: 3 reals representing x, y, and z. | ||

+ | spherical2rectangular | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | 4 ROLLD @ Move flags list to level 4. | ||

+ | SPHERE @ Force spherical display mode. | ||

+ | \->V3 @ Combine into vector. | ||

+ | RECT @ Force rectangular display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | 4 ROLL @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 3 dimensional Rectangular\->Spherical program. | ||

+ | @ Arguments: 3 reals representing x, y, and z. | ||

+ | @ Returns: 3 reals representing rho, phi, and theta. | ||

+ | rectangular2spherical | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | 4 ROLLD @ Move flags list to level 4. | ||

+ | RECT @ Force rectangular display mode. | ||

+ | \->V3 @ Combine into vector. | ||

+ | SPHERE @ Force spherical display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | 4 ROLL @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 3 dimensional Cylindrical\->Spherical program. | ||

+ | @ Arguments: 3 reals representing r, theta, and z. | ||

+ | @ Returns: 3 reals representing rho, phi, and theta. | ||

+ | cylindrical2spherical | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | 4 ROLLD @ Move flags list to level 4. | ||

+ | CYLIN @ Force cylindrical display mode. | ||

+ | \->V3 @ Combine into vector. | ||

+ | SPHERE @ Force spherical display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | 4 ROLL @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | |||

+ | @ 3 dimensional Spherical\->Cylindrical program. | ||

+ | @ Arguments: 3 reals representing rho, phi, and theta. | ||

+ | @ Returns: 3 reals representing r, theta, and z. | ||

+ | spherical2cylindrical | ||

+ | \<< @ Begin program. | ||

+ | RCLF @ Get current flags. | ||

+ | 4 ROLLD @ Move flags list to level 4. | ||

+ | SPHERE @ Force spherical display mode. | ||

+ | \->V3 @ Combine into vector. | ||

+ | CYLIN @ Force cylindrical display mode. | ||

+ | V\-> @ Decompose into reals. | ||

+ | 4 ROLL @ Move flags list back to level 1. | ||

+ | STOF @ Restore original flags. | ||

+ | \>> | ||

+ | | ||

+ | @url: 'www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv021.cgi?read=223680', | ||

+ | @tags: [ 'Euler totient' ], | ||

+ | @description: | ||

+ | @ See oeis.org/A000010 . | ||

+ | @ Note: the 50g has this function natively implemented. | ||

+ | @ | ||

+ | eulerTotient | ||

+ | \<< DUP | ||

+ | IF 1 \=/ | ||

+ | THEN { } SWAP FACTORS DUP SIZE 1 SWAP | ||

+ | FOR i DUP i GET ROT + SWAP 2 | ||

+ | STEP { } SWAP DUP SIZE 2 SWAP | ||

+ | FOR i DUP i GET ROT + SWAP 2 | ||

+ | STEP DROP 1 - OVER SWAP | ||

+ | \<< ^ | ||

+ | \>> DOLIST SWAP 1 - + \PILIST | ||

+ | END | ||

+ | \>> | ||

+ | @examples: [ | ||

+ | @ 'Input: 98765430111 | ||

+ | @ Output: 61497371520', | ||

+ | @], | ||

+ | | ||

+ | @url: 'www.hpmuseum.org/forum/archive/index.php?thread-4162.html', | ||

+ | @tags: [ 'farey sequence', 'fractions' ], | ||

+ | @description: ' | ||

+ | @ computes the farey sequence | ||

+ | @ en.wikipedia.org/wiki/Farey_sequence | ||

+ | @', | ||

+ | fareySequence | ||

+ | \<< \-> n | ||

+ | \<< { [ 0 1 ] } 0 1 DUP n | ||

+ | WHILE OVER n < | ||

+ | REPEAT \-> a b c d | ||

+ | \<< c d \->V2 + | ||

+ | c d | ||

+ | n b + d / IP | ||

+ | DUP c * a - | ||

+ | SWAP d * b - | ||

+ | \>> | ||

+ | END | ||

+ | DROP2 DROP2 | ||

+ | \>> | ||

+ | \>> | ||

+ | @examples: [ | ||

+ | @ 'Input: the wanted <n> terms of the sequence | ||

+ | @ Output: the farey sequence', | ||

+ | @], | ||

+ | | ||

+ | randIntHelp | ||

+ | " url: 'http://www.hpmuseum.org/forum/thread-10271-post-93738.html#pid93738', | ||

+ | tags: [ 'random number', 'statistics' ], | ||

+ | description: | ||

+ | returns a random integer number between 1 and the value given | ||

+ | | ||

+ | Input: an integer number (as real) | ||

+ | output: an integer (as real) between 1 and the input inclusive | ||

+ | " | ||

+ | | ||

+ | randInt | ||

+ | \<< | ||

+ | RAND * CEIL | ||

+ | \>> | ||

+ | | ||

+ | randIntRangeHelp | ||

+ | " url: '-', | ||

+ | tags: [ 'random number', 'statistics' ], | ||

+ | description: | ||

+ | returns a random integer in the specified value | ||

+ | | ||

+ | Input: | ||

+ | L2: min value | ||

+ | L1: max value | ||

+ | output: an integer (as real) between min and max value included | ||

+ | " | ||

+ | randIntRange | ||

+ | \<< | ||

+ | \-> | ||

+ | lvMin | ||

+ | lvMax | ||

+ | \<< | ||

+ | lvMax lvMin - @the distance max-min | ||

+ | 1 + @a value that we need to offset CEIL later | ||

+ | RAND * CEIL | ||

+ | 1 - | ||

+ | @due to ceil, if the size of the range is, say, 4 large, | ||

+ | @one would expect values in (0,1,2,3,4) but with ceil 0 is never happening. | ||

+ | @Thanks to a larger range we have (0,1,2,3,4,5) where 0 is never happening. | ||

+ | @Thus we have (1,2,3,4,5) | ||

+ | @Then we need to shift of one value on the left, obtaining (0,1,2,3,4) as wished | ||

+ | lvMin | ||

+ | + | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | randCoinHelp | ||

+ | " url: '-', | ||

+ | tags: [ 'random coin number', 'statistics' ], | ||

+ | description: | ||

+ | returns a random integer between 0 and 1 | ||

+ | | ||

+ | Input: - | ||

+ | output: an integer (as real) between 0 and 1 | ||

+ | " | ||

+ | |||

+ | randCoin | ||

+ | \<< | ||

+ | 2 RAND * FLOOR | ||

+ | \>> | ||

+ | | ||

+ | | ||

+ | DEC2FRAChelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/archive/index.php?thread-7955-13.html', | ||

+ | tags: [ 'best fraction' ], | ||

+ | description: | ||

+ | Given any decimal fraction in level 2, and a maximum denominator in level 1, it returns the best fraction | ||

+ | |||

+ | input | ||

+ | L2: number to approximate | ||

+ | L1: max denominator | ||

+ | Example: | ||

+ | pi, 1000, DEC2FRAC --> 355/113 in 0.39 seconds | ||

+ | pi, 100000, DEC2FRAC --> 312689/99532 in 0.43 seconds | ||

+ | " | ||

+ | |||

+ | DEC2FRAC | ||

+ | \<< DUP2 @ Must be two arguments. Exit now if max denominator < 2, | ||

+ | IF 1 > SWAP FP AND @ or if decimal fraction is an integer. | ||

+ | THEN \-> f c @ Store decimal fraction, and max denominator. | ||

+ | |||

+ | \<< 0 1 f @ Calculate only denominators. Do numerator only at end. | ||

+ | WHILE OVER c < OVER AND @ Do until bigger than max denominator | ||

+ | REPEAT INV DUP FP 4 ROLLD IP OVER * ROT + ROT @ This is the | ||

+ | END DROP DUP2 c @ recursion formula continued fraction expansion. | ||

+ | |||

+ | IF DUP2 > @ Is there a possible "missing" fraction? | ||

+ | THEN - OVER / CEIL * - @ This is the new, fast "jump backwards". | ||

+ | ELSE 3 DROPN @ (Sometimes there's no need to jump.) | ||

+ | END DUP2 1 2 @ Take the new denominator & the previous one, and | ||

+ | |||

+ | START DUP f * 0 RND SWAP / f - ABS SWAP @ turn into fractions. | ||

+ | NEXT @ See which one's closest to the original decimal fraction. | ||

+ | |||

+ | IF > @ Compare the two solutions, and | ||

+ | THEN SWAP @ pick the better one. | ||

+ | END DROP DUP f * 0 RND SWAP @ Calculate the numerator. | ||

+ | \>> @ End of real work; now clean up the output. | ||

+ | |||

+ | IF DUP ABS 1 > @ Is the denominator greater than 1? | ||

+ | THEN -3 CF R\->I SWAP R\->I SWAP / @ If so, make output into 'A/B' form. | ||

+ | ELSE DROP @ Otherwise, get rid of extraneous denominator, | ||

+ | END @ and exit program. | ||

+ | |||

+ | ELSE DROP @ If bad arguments, do nothing to "decimal fraction", but | ||

+ | END @ get rid of "maximum denominator" and exit program. | ||

+ | \>> | ||

+ | |||

+ | iterateContFracHelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-2025.html', | ||

+ | tags: [ 'continous fraction' ], | ||

+ | description: | ||

+ | algorithm for converting a decimal into a fraction without storing the partial quotients of the expanded continued fraction. | ||

+ | | ||

+ | Instructions: | ||

+ | (1) Clear the stack. Put calculator in exact mode. | ||

+ | (2) Place on level 1 of the stack either a decimal number, | ||

+ | or an algebraic ratio of two integers, e.g. '123/234'. | ||

+ | (3) Run the program repeatedly. Stop when level 4 shows infinity. | ||

+ | |||

+ | Each iteration will display the following on the stack: | ||

+ | |||

+ | 4: Current value of N. Stop when it's infinity. | ||

+ | 3: Previous Convergent p/q in the form of { p q } | ||

+ | 2: Current Convergent a/b in the form { a b } | ||

+ | 1: Decimal evaluation of a/b | ||

+ | |||

+ | Warning: Program must be loaded and run in exact mode. | ||

+ | " | ||

+ | |||

+ | iterateContFracHelp | ||

+ | \<< | ||

+ | IF DEPTH 1. SAME | ||

+ | THEN | ||

+ | IF DUP TYPE 0. == | ||

+ | THEN 1.E50 * R\->I 50 ALOG / | ||

+ | END PROPFRAC { 0 1 } { 1 0 } | ||

+ | ELSE DROP 3. ROLL EVAL FXND SWAP OVER IDIV2 ROT SWAP / PROPFRAC 4. ROLLD OVER 4. ROLLD * ADD | ||

+ | END DUP EVAL SWAP \->NUM SWAP / | ||

+ | \>> | ||

+ | | ||

+ | LOGBXhelp | ||

+ | " url: 'http://www.hpmuseum.org/forum/thread-10271-post-110396.html#pid110396', | ||

+ | tags: [ 'logarithms' ], | ||

+ | description: | ||

+ | logarithm of X in base b | ||

+ | | ||

+ | Input: | ||

+ | L2: base | ||

+ | L1: number | ||

+ | output: | ||

+ | log_b(x) | ||

+ | " | ||

+ | |||

+ | LOGBX | ||

+ | \<< \-> b x \<< x LN b LN / \>> \>> | ||

+ | | ||

+ | @################################## | ||

+ | @# | ||

+ | @# list operations and math on list | ||

+ | |||

+ | @url: 'www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv016.cgi?read=103417', | ||

+ | @tags: [ 'geometric mean', 'statistics' ], | ||

+ | @description: ' | ||

+ | @ computes the geometric mean | ||

+ | @', | ||

+ | geometricMean | ||

+ | \<< | ||

+ | \-> | ||

+ | list | ||

+ | | ||

+ | \<< | ||

+ | list \PILIST list SIZE XROOT | ||

+ | \>> | ||

+ | \>> | ||

+ | @examples: [ | ||

+ | @ 'Input: a list of numbers | ||

+ | @ Output: the geometric mean', | ||

+ | @], | ||

+ | | ||

+ | @url: '-', | ||

+ | @tags: [ 'harmonic mean', 'statistics' ], | ||

+ | @description: ' | ||

+ | @ computes the harmonic mean | ||

+ | @ See also official hp 50g user guide (the large one with 800+ pages) page 8-15 | ||

+ | @', | ||

+ | @examples: | ||

+ | @ - See official hp 50g user guide (the large one with 800+ pages) page 8-15 | ||

+ | | ||

+ | @Input: | ||

+ | @L1: a list of samples of which we want the harmonic mean. | ||

+ | @Output: the harmonic mean | ||

+ | harmonicMean | ||

+ | \<< | ||

+ | | ||

+ | DUP SIZE | ||

+ | \-> | ||

+ | @input | ||

+ | lvInputList | ||

+ | lvInputListSize | ||

+ | | ||

+ | \<< | ||

+ | lvInputList INV \GSLIST | ||

+ | lvInputListSize / | ||

+ | INV | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @url: '-', | ||

+ | @tags: [ 'weighted average', 'statistics' ], | ||

+ | @description: ' | ||

+ | @ See also official hp 50g user guide (the large one with 800+ pages) page 8-17 | ||

+ | @', | ||

+ | @examples: | ||

+ | @ - See official hp 50g user guide (the large one with 800+ pages) page 8-17 | ||

+ | | ||

+ | @Input: | ||

+ | @L2: A list of samples | ||

+ | @L1: A list of weights | ||

+ | @Output: the weighted average | ||

+ | weightedAverage | ||

+ | \<< | ||

+ | |||

+ | \-> | ||

+ | @input | ||

+ | lvSampleList | ||

+ | lvWeightList | ||

+ | | ||

+ | \<< | ||

+ | lvSampleList lvWeightList * \GSLIST | ||

+ | lvWeightList \GSLIST | ||

+ | / | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @url: 'www.hpmuseum.org/forum/archive/index.php?thread-4138.html', | ||

+ | @tags: [ 'average', 'moving average', 'statistics', 'list processing' ], | ||

+ | @description: ' | ||

+ | @ computes the moving average and the average of a list | ||

+ | @average | ||

+ | @Input: a list of numbers | ||

+ | @Output: the average | ||

+ | average | ||

+ | \<< DUP \GSLIST SWAP SIZE / \>> | ||

+ | |||

+ | @moving average | ||

+ | @input: | ||

+ | @ L2: a list | ||

+ | @ L1: a number of elements to consider to compute the moving average | ||

+ | @output: | ||

+ | @ L1: the list with moving averages | ||

+ | movingAverage | ||

+ | \<< \-> N | ||

+ | \<< N \<< N \->LIST average \>> DOSUBS \>> | ||

+ | \>> | ||

+ | |||

+ | @url: 'www.hpmuseum.org/forum/thread-8209-post-81657.html#pid81657', | ||

+ | @tags: [ 'list processing' ], | ||

+ | @description: | ||

+ | @ increment an element in a list given the increment and the position | ||

+ | |||

+ | @input: | ||

+ | @L3: list to increment | ||

+ | @L2: position | ||

+ | @L1: increment (or decrement with a negative number) | ||

+ | @output: a list with the element in position incremented (or decremented | ||

+ | @ by the specified amount) | ||

+ | incrListElement | ||

+ | \<< | ||

+ | PICK3 PICK3 | ||

+ | GET + PUT | ||

+ | \>> | ||

+ | |||

+ | |||

+ | @url: 'www.hpmuseum.org/forum/thread-8209-post-81657.html#pid81657', | ||

+ | @tags: [ 'list processing' ], | ||

+ | @description: | ||

+ | @ create a list of zero elements except one in a particular position | ||

+ | @input: | ||

+ | @L3: value to put in the list | ||

+ | @L2: position | ||

+ | @L1: list size | ||

+ | @output: a list of zeroes with the specified value in the given position | ||

+ | listRowIdentity | ||

+ | \<< | ||

+ | 0 SWAP | ||

+ | NDUPN \->LIST | ||

+ | SWAP ROT PUT | ||

+ | \>> | ||

+ | @url: 'www.hpmuseum.org/forum/thread-8209-post-81669.html#pid81669', | ||

+ | @tags: [ 'stack processing' ], | ||

+ | @description: ' | ||

+ | @ reverse the order of the last 3 stack elements. | ||

+ | | ||

+ | @ url: 'www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv021.cgi?read=238006', | ||

+ | @ tags: [ 'list processing' ], | ||

+ | @ description: 'take a list in input and split it in a list of | ||

+ | @ sublists in output where a sublists first element would be | ||

+ | @ the last element of the previous sublists. Sublists of size 3', | ||

+ | @ userrpl : ' | ||

+ | @ , | ||

+ | @ examples: [ | ||

+ | @ 'Input: {1 2 3 4 5 } | ||

+ | @ Output: {{ 1 2 3} {3 4 5}}', | ||

+ | @ ], | ||

+ | splitList | ||

+ | \<< | ||

+ | 3 | ||

+ | \<< 3 \->LIST NSUB 2 MOD NOT DROPN \>> | ||

+ | DOSUBS | ||

+ | \>> | ||

+ | | ||

+ | @url: 'www.hpmuseum.org/forum/thread-8209-post-81669.html#pid81669', | ||

+ | @tags: [ 'list processing' ], | ||

+ | @description: ' | ||

+ | @ create a list of n equal objects | ||

+ | @input: | ||

+ | @L2: object to replicate | ||

+ | @L1: number of replications | ||

+ | @output | ||

+ | @a list with the replicated object | ||

+ | nreplication2list | ||

+ | \<< | ||

+ | NDUPN \->LIST | ||

+ | \>> | ||

+ | | ||

+ | @url: 'www.hpmuseum.org/forum/thread-8209-post-82417.html#pid82417', | ||

+ | @tags: [ 'list processing' ], | ||

+ | @description: | ||

+ | @ remove all entries of an element in a list. | ||

+ | @ Requires the listExt of DavidM. | ||

+ | | ||

+ | @input: | ||

+ | @L2: a list | ||

+ | @L1: an object to match | ||

+ | removeElementFromList | ||

+ | \<< | ||

+ | OVER SWAP MPOS LRMOV | ||

+ | \>> | ||

+ | @output | ||

+ | @L1: the list in input without the entries that matched the object | ||

+ | | ||

+ | | ||

+ | shufListHelp | ||

+ | " | ||

+ | url: 'hpmuseum.org/forum/thread-8209-post-74271.html#pid74271', | ||

+ | tags: [ 'list processing', 'randomize list' ], | ||

+ | description: | ||

+ | randomize a list in input | ||

+ | also check. www.hpmuseum.org/forum/thread-7955-post-71223.html#pid71223 | ||

+ | www.hpmuseum.org/forum/thread-2889-post-25163.html#pid25163 | ||

+ | |||

+ | input: | ||

+ | L1: a list to randomize | ||

+ | output: | ||

+ | L1: the randomized list. | ||

+ | " | ||

+ | | ||

+ | shufList | ||

+ | \<< | ||

+ | @ explode the list onto stack and save the size (sz) | ||

+ | OBJ\-> \-> sz | ||

+ | |||

+ | \<< | ||

+ | @ loop: for list item positions 1 to (sz-1), choose a | ||

+ | @ random item from the remaining candidates and move it | ||

+ | @ to the target position | ||

+ | |||

+ | @ note: stack positions (sz...1) are numbered inversely to | ||

+ | @ list positions (1...sz) | ||

+ | |||

+ | @ x represents the current target position | ||

+ | sz 2 FOR x | ||

+ | |||

+ | @ pick a random item position from the remaining pool | ||

+ | x RAND * CEIL | ||

+ | |||

+ | @ move the chosen item to stack level 1 | ||

+ | ROLL | ||

+ | |||

+ | @ move the chosen item to the current target position | ||

+ | x ROLLD | ||

+ | |||

+ | @ update target to the next position | ||

+ | -1 STEP | ||

+ | |||

+ | @ implode the resulting list data | ||

+ | sz \->LIST | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | @url: 'groups.google.com/d/msg/comp.sys.hp48/mK0ywSIJ5Ho/5lP9xux0CAAJ', | ||

+ | @tags: [ 'random integer list' ], | ||

+ | @description: | ||

+ | @ random integer list without duplicates | ||

+ | | ||

+ | @input | ||

+ | @L2: max positive integer (from 1) | ||

+ | @L1: number of integers to get | ||

+ | @example: | ||

+ | @L2: 10 (we want the integers between 1 and 10) | ||

+ | @L1: 5 (we want 5 integers) | ||

+ | randIntListNoDUP | ||

+ | \<< \-> t n | ||

+ | \<< 1 t | ||

+ | FOR x x DUP RAND * CEIL ROLLD | ||

+ | NEXT t n - DROPN n \->LIST | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | listRandSeqHelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-8209-post-111195.html#pid111195', | ||

+ | tags: [ 'list processing', 'create list', 'list sequence', 'random' ], | ||

+ | description: | ||

+ | given a min and max value in input, creates a random list with N elements from the range [min, max] € N. | ||

+ | |||

+ | input: | ||

+ | L3: min value (integer) | ||

+ | L2: max value (integer) | ||

+ | L1: number of elements | ||

+ | output: | ||

+ | list of random integers in the range. | ||

+ | " | ||

+ | | ||

+ | listRandSeq | ||

+ | \<< | ||

+ | \-> | ||

+ | lvMin | ||

+ | lvMax | ||

+ | lvCount | ||

+ | \<< | ||

+ | 1. lvCount | ||

+ | START | ||

+ | lvMax lvMin - @the distance max-min | ||

+ | 1 + @a value that we need to offset CEIL later | ||

+ | RAND * CEIL | ||

+ | 1 - | ||

+ | @due to ceil, if the size of the range is, say, 4 large, | ||

+ | @one would expect values in (0,1,2,3,4) but with ceil 0 is never happening. | ||

+ | @Thanks to a larger range we have (0,1,2,3,4,5) where 0 is never happening. | ||

+ | @Thus we have (1,2,3,4,5) | ||

+ | @Then we need to shift of one value on the left, obtaining (0,1,2,3,4) as wished | ||

+ | lvMin | ||

+ | + | ||

+ | NEXT | ||

+ | lvCount \->LIST | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | listRandSeqJKHelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-8555-post-111199.html#pid111199', | ||

+ | tags: [ 'list processing', 'create list', 'list sequence', 'random' ], | ||

+ | description: | ||

+ | given a min and max value in input, creates a random list with N elements from the range [min, max] € N. | ||

+ | It works for approximate and exact mode. | ||

+ | |||

+ | input: | ||

+ | L3: number of elements | ||

+ | L2: min value (integer) | ||

+ | L3: max value (integer) | ||

+ | output: | ||

+ | list of random integers in the range. | ||

+ | " | ||

+ | | ||

+ | listRandSeqJK | ||

+ | \<< 3. \->LIST I\->R EVAL OVER - 1. + \-> s b a | ||

+ | \<< | ||

+ | IF -105. FS? | ||

+ | THEN 1. s | ||

+ | START RAND a * b + FLOOR | ||

+ | NEXT | ||

+ | ELSE 1. s | ||

+ | START RAND a * b + FLOOR R\->I | ||

+ | NEXT | ||

+ | END s \->LIST | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | listMaxHelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-8555-post-94249.html#pid94249', | ||

+ | tags: [ 'list processing', 'max min' ], | ||

+ | description: | ||

+ | find max in a list | ||

+ | |||

+ | input: | ||

+ | L1: a list of numbers | ||

+ | output: | ||

+ | L1: the max value | ||

+ | " | ||

+ | |||

+ | listMax | ||

+ | \<< | ||

+ | \<< MAX \>> | ||

+ | STREAM | ||

+ | \>> | ||

+ | | ||

+ | listMinHelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-8555-post-94249.html#pid94249', | ||

+ | tags: [ 'list processing', 'max min' ], | ||

+ | description: | ||

+ | find min in a list | ||

+ | |||

+ | input: | ||

+ | L1: a list of numbers | ||

+ | output: | ||

+ | L1: the min value | ||

+ | " | ||

+ | |||

+ | listMin | ||

+ | \<< | ||

+ | \<< MIN \>> | ||

+ | STREAM | ||

+ | \>> | ||

+ | |||

+ | lCumSumHelp | ||

+ | " | ||

+ | url: http://www.hpmuseum.org/forum/thread-8209-post-91682.html#pid91682 | ||

+ | tags: [ 'list processing', 'cumulative sum' ], | ||

+ | description: | ||

+ | cumulative sum of elements in a list. author: DavidM | ||

+ | |||

+ | input: | ||

+ | L1: a list of numbers | ||

+ | output: | ||

+ | L1: the list with the comulative sum | ||

+ | |||

+ | example(s): | ||

+ | - input: { 1 2 3 4 5} | ||

+ | output: { 1 3 6 10 15 } | ||

+ | " | ||

+ | | ||

+ | lCumSum | ||

+ | \<< | ||

+ | 1 | ||

+ | \<< | ||

+ | NSUB 1 - | ||

+ | { OVER + } | ||

+ | IFT | ||

+ | \>> | ||

+ | DOSUBS | ||

+ | \>> | ||

+ | | ||

+ | listOneConstantHelp | ||

+ | " | ||

+ | url: http://www.hpmuseum.org/forum/thread-8209-post-81657.html#pid81657 | ||

+ | tags: [ 'list processing', 'list of zeroes with constant' ], | ||

+ | description: | ||

+ | list of zeroes with constant | ||

+ | |||

+ | input: | ||

+ | L3: constant | ||

+ | L2: position | ||

+ | L1: list size | ||

+ | output: | ||

+ | L1: list of 0 with the constant in position | ||

+ | |||

+ | example(s): | ||

+ | input: | ||

+ | 5 | ||

+ | 3 | ||

+ | 5 | ||

+ | output: { 0 0 5 0 0 } | ||

+ | " | ||

+ | | ||

+ | listOneConstant | ||

+ | \<< | ||

+ | 0 SWAP | ||

+ | NDUPN →LIST | ||

+ | SWAP ROT PUT | ||

+ | \>> | ||

+ | | ||

+ | listIncrDecrElementHelp | ||

+ | " | ||

+ | url: http://www.hpmuseum.org/forum/thread-8209-post-81657.html#pid81657 | ||

+ | tags: [ 'list processing', 'list increase decrease element' ], | ||

+ | description: | ||

+ | given a list increments or decrements an element in position. | ||

+ | author: DavidM | ||

+ | |||

+ | input: | ||

+ | L3: list | ||

+ | L2: position | ||

+ | L1: increment / decrement | ||

+ | output: | ||

+ | L1: list with the element in position modified | ||

+ | |||

+ | example(s): | ||

+ | input: | ||

+ | { 3 3 3 } | ||

+ | 2 | ||

+ | -5 | ||

+ | output: { 3 -2 3 } | ||

+ | " | ||

+ | | ||

+ | listIncrDecrElement | ||

+ | \<< | ||

+ | PICK3 PICK3 | ||

+ | GET + PUT | ||

+ | \>> | ||

+ | | ||

+ | listFrequencyElements | ||

+ | @using ListEXT | ||

+ | \<< | ||

+ | \-> | ||

+ | lvInputList | ||

+ | | ||

+ | \<< | ||

+ | lvInputList LDDUP @results without duplicates | ||

+ | 1 | ||

+ | \<< | ||

+ | DUP @duplicate L1 | ||

+ | lvInputList SWAP @bring the single element on L1 | ||

+ | LCNT @count the value | ||

+ | \->TAG @tag the element with its frequency | ||

+ | \>> | ||

+ | DOSUBS | ||

+ | | ||

+ | @output: | ||

+ | @results without duplicates and their frequency in a list | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | ListPickLastHelp | ||

+ | " | ||

+ | url: - | ||

+ | tags: [ 'list processing', 'last element' ], | ||

+ | description: | ||

+ | given a list picks the last element. | ||

+ | |||

+ | input: | ||

+ | a list | ||

+ | |||

+ | output: | ||

+ | the last element | ||

+ | " | ||

+ | ListPickLast | ||

+ | \<< | ||

+ | REVLIST HEAD | ||

+ | \>> | ||

+ | | ||

+ | listSumSubListHelp | ||

+ | " | ||

+ | url: - | ||

+ | tags: [ 'list processing', 'sum of sublist' ], | ||

+ | description: | ||

+ | given a list picks the last element. | ||

+ | |||

+ | Input: a list with sublists of the same dimension | ||

+ | |||

+ | Output: the sum of the sublists. | ||

+ | " | ||

+ | | ||

+ | listSumSubList | ||

+ | \<< | ||

+ | IF | ||

+ | @ if the list is large enough | ||

+ | DUP SIZE 1 > | ||

+ | THEN | ||

+ | \<< ADD \>> | ||

+ | STREAM | ||

+ | ELSE | ||

+ | @otherwise the list itself. | ||

+ | HEAD | ||

+ | END | ||

+ | \>> | ||

+ | | ||

+ | LTRANTKHelp | ||

+ | " | ||

+ | url: http://www.hpmuseum.org/forum/thread-8209-post-111264.html#pid111264 | ||

+ | tags: [ 'list processing', 'transpose list' ], | ||

+ | description: | ||

+ | given a list of sublists of the same size, transposes its elements. | ||

+ | As if it was a matrix. | ||

+ | Author | ||

+ | Thomas Klemm | ||

+ | |||

+ | Input: a list with sublists of the same dimension | ||

+ | |||

+ | Output: the list with the sublists with elements transposed. | ||

+ | |||

+ | Example(s): | ||

+ | { { 1 2 3 } { 3 4 5 } } -> { { 1 4 } { 2 4 } { 3 5 } } | ||

+ | " | ||

+ | LTRANTK | ||

+ | \<< | ||

+ | OBJ\-> | ||

+ | \-> | ||

+ | n | ||

+ | \<< | ||

+ | n | ||

+ | \<< | ||

+ | n \->LIST | ||

+ | \>> | ||

+ | DOLIST | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | LTRANJKhelp | ||

+ | " | ||

+ | url: http://www.hpmuseum.org/forum/thread-8209-post-111256.html#pid111256 | ||

+ | tags: [ 'list processing', 'transpose list' ], | ||

+ | description: | ||

+ | given a list of sublists of the same size, transposes its elements. | ||

+ | As if it was a matrix. | ||

+ | Requires: | ||

+ | ListExt . See in this file the links. | ||

+ | Author | ||

+ | John Keith | ||

+ | |||

+ | Input: a list with sublists of the same dimension | ||

+ | |||

+ | Output: the list with the sublists with elements transposed. | ||

+ | |||

+ | Example(s): | ||

+ | {{ 1 2 3 }{4 5 6 }{ 7 8 9 }} -> {{ 1 4 7 }{ 2 5 8 }{ 3 6 9 }} | ||

+ | " | ||

+ | | ||

+ | LTRANJK | ||

+ | \<< | ||

+ | DUP LXIL SWAP SIZE LDIST | ||

+ | \>> | ||

+ | | ||

+ | L2OVERLAPSUBHelp | ||

+ | " | ||

+ | url: http://www.hpmuseum.org/forum/thread-8209-post-111278.html#pid111278 | ||

+ | tags: [ 'list processing', 'list overlapping sublists' ], | ||

+ | description: | ||

+ | given a list it creates a list of sublists with each sublists having the first and | ||

+ | last element in common with adjacent sulists. | ||

+ | Author | ||

+ | John Keith | ||

+ | |||

+ | Input: | ||

+ | L2: a list | ||

+ | L1: a number to decide the size of the sublists. | ||

+ | |||

+ | Output: a list of sublists with each sublists having the first and | ||

+ | last element in common with adjacent sulists. | ||

+ | |||

+ | Example(s): | ||

+ | { 1 2 3 4 5 } 2 -> {{ 1 2 }{ 2 3 }{ 3 4 }{ 4 5 }} | ||

+ | " | ||

+ | | ||

+ | L2OVERLAPSUB | ||

+ | \<< | ||

+ | \-> n | ||

+ | \<< n | ||

+ | \<< n \->LIST | ||

+ | \>> DOSUBS | ||

+ | \>> | ||

+ | \>> | ||

+ | | ||

+ | LPercentileTKHelp | ||

+ | " | ||

+ | url: 'http://www.hpmuseum.org/forum/thread-11435-post-104441.html#pid104441', | ||

+ | tags: [ 'list', 'percentile', 'quartile', 'median' ], | ||

+ | description: | ||

+ | Modified by Thomas Klemm based on a program in the 48 (or 50g) advanced user reference. | ||

+ | |||

+ | Input: | ||

+ | L2: inputList | ||

+ | L1: percentile (integer 0 to 100) | ||

+ | Output | ||

+ | L3: the percentile | ||

+ | | ||

+ | Example(s): | ||

+ | { 6 7 15 36 39 40 41 42 43 47 49 } | ||

+ | 25: 25.5 | ||

+ | 50: 40 | ||

+ | 75: 42.5 | ||

+ | " | ||

+ | | ||

+ | LPercentileTK | ||

+ | \<< | ||

+ | SWAP SORT DUP SIZE 1 - ROT % 1 + | ||

+ | \-> p | ||

+ | \<< | ||

+ | DUP p FLOOR GET SWAP p CEIL GET + 2 / | ||

+ | \>> | ||

+ | \>> | ||

+ | |||

+ | @################################## | ||

+ | @# | ||

+ | @# Stack operations | ||

+ | | ||

+ | @that is from L3 L2 L1 | ||

+ | @one obtains L1 L2 L3 | ||

+ | rev3stack | ||

+ | \<< | ||

+ | SWAP ROT | ||

+ | \>> | ||

+ | | ||

+ | @info snippet | ||

+ | @url: 'www.hpmuseum.org/forum/thread-8209-post-81686.html#pid81686', | ||

+ | @tags: [ 'stack processing', 'rule of thumb' ], | ||

+ | @description: | ||

+ | infoSingleArgStackOp | ||

+ | " | ||

+ | stack operations that take a numeric argument (DUPN, ROLL, PICK, etc.) | ||

+ | take about 7 times as long to execute as simple operations | ||

+ | (SWAP, DUP, ROT, etc.) | ||

+ | " | ||

+ | | ||

+ | @################################## | ||

+ | @# | ||

+ | @# user input operations | ||

+ | | ||

+ | @url: 'groups.google.com/forum/#!original/comp.sys.hp48/o4XwzdSzWhc/-TZrBqVzgcEJ', | ||

+ | @tags: [ 'input forms', 'inform' ], | ||

+ | @description: ' | ||

+ | @ There are alternatives to good old INFORM or INPUT, | ||

+ | @such as INLIST, INMENU, and INPROMPT | ||

+ | @ | ||

+ | @INLIST is an INFORM replacement, having all these same features: | ||

+ | @ | ||

+ | @o Editing (including a CALC mode for stack calculations) | ||

+ | @o Optional "reset values" | ||

+ | @o Optional object type restriction | ||

+ | @ | ||

+ | @ | ||

+ | @But INLIST is not limited | ||

+ | @to what can be crammed into one small form, | ||

+ | @because its "form" is open-ended and *scrolls* vertically. | ||

+ | @ | ||

+ | @The INLIST arguments are similar to INFORM: | ||

+ | @ | ||

+ | @ | ||

+ | @"Title" { prompts } { initial values } | ||

+ | @-OR- | ||

+ | @"Title" { prompts } { reset values } { initial values } | ||

+ | @ | ||

+ | @ | ||

+ | @Note: Lists other than "prompts" | ||

+ | @may be empty or shorter than the "prompts" list. | ||

+ | @ | ||

+ | @Each "prompt" in the list of prompts is: | ||

+ | @ | ||

+ | @o "Any string" (or any word) | ||

+ | @-OR- | ||

+ | @o A list: { "Prompt" type1 type2 .. } for object type restriction | ||

+ | @ | ||

+ | @How to enter data using INLIST: | ||

+ | @Highlight any item; press OK or ENTER to edit. | ||

+ | @ | ||

+ | @Individual value "reset" is invoked | ||

+ | @by a blank edit area (press ON once if not yet blank). | ||

+ | @ | ||

+ | @Individual value CALC mode is invoked | ||

+ | @by typing only an "equal" command [=3D] into the edit area | ||

+ | @(left-shifted zero on 48G, right-shifted W on 49G/50G); | ||

+ | @return from CALC mode via CONT (left-shifted ON). | ||

+ | @ | ||

+ | @ | ||

+ | @Also use CALC mode to see the list of valid object TYPES. | ||

+ | @ | ||

+ | @"Reset All" is invoked | ||

+ | @by an item at the very end of the form. | ||

+ | @ | ||

+ | @ | ||

+ | @"<DONE>" provides the normal exit from INLIST; | ||

+ | @ON or "Cancel" (from the form level) aborts. | ||

+ | @ | ||

+ | @ | ||

+ | @Level | Stack at normal exit: | Stack after abort: | ||

+ | @2: { final values } | | ||

+ | @1: 1. | 0. | ||

+ | @ | ||

+ | @ | ||

+ | @The use of a full-screen CHOOSE program can improve INLIST, | ||

+ | @by displaying a full line for each item, | ||

+ | @and by using the full height of the screen. | ||

+ | @ | ||

+ | @ | ||

+ | @Full-screen CHOOSE for any HP48G/49G/50G series calculator: | ||

+ | @groups.google.com/group/comp.sys.hp48/msg/8888908f27145901?dmode=3Ds= | ||

+ | @ource | ||

+ | @www.hpcalc.org/details.php?id=3D6431 (ROLDXJ, contains binaries) | ||

+ | @ | ||

+ | @ | ||

+ | @A program INFORML is also provided below, | ||

+ | @which accepts the exact same five arguments as INFORM, | ||

+ | @but calls INLIST instead, so that you may merely | ||

+ | @change INFORM to INFORML in your existing programs that use INFORM. | ||

+ | @ | ||

+ | @ | ||

+ | @A program INLISTF is also provided below, | ||

+ | @which accepts the fewer arguments needed by INLIST, | ||

+ | @but calls INFORM instead, so that you may merely | ||

+ | @change INLIST to INLISTF in existing programs that use INLIST. | ||

+ | @ | ||

+ | @ | ||

+ | @If you require all form fields to be filled in, | ||

+ | @to avoid any skipped fields returning NOVAL as their value, | ||

+ | @programs INLISTN and INFORMN are also provided, | ||

+ | @which accept the identical arguments, but automatically | ||

+ | @repeat INLIST or INFORM until the results are free of any NOVAL. | ||

+ | |||

+ | @ Sample program for INPROMPT: | ||

+ | tinp | ||

+ | \<< "Enter X" INPROMPT "X" \->TAG | ||

+ | "Enter Y" INPROMPT "Y" \->TAG | ||

+ | \>> | ||

+ | |||

+ | @ INPROMPT (all HP48/49/50) | ||

+ | INPROMPT | ||

+ | \<< 10. CHR + "then press menu key" + @ optional hint | ||

+ | { { "OK" \<< 0. MENU CONT \>> } | ||

+ | { "(AN(L" \<< 0. MENU KILL \>> } } | ||

+ | TMENU PROMPT | ||

+ | \>> | ||

+ | |||

+ | @ --- | ||

+ | |||

+ | @ Sample program for INMENU: | ||

+ | tinm | ||

+ | \<< "Value [menu key]" { X Y } INMENU | ||

+ | X "X" \->TAG Y "Y" \->TAG | ||

+ | 'X+Y' EVAL "X+Y" \->TAG | ||

+ | 'X*Y' EVAL "X*Y" \->TAG | ||

+ | \>> | ||

+ | |||

+ | @ INMENU (48G/49G/50G) store input to variables instead of stack | ||

+ | @ Args: "Title" { labels } Nothing returned on stack. | ||

+ | @ "One touch" to store, DONE returns, LeftShift DONE aborts, | ||

+ | @ RightShift recalls, RightShift CursorDown reviews values. | ||

+ | @ "Real" numbers stored into "unit" objects preserve the units! | ||

+ | INMENU | ||

+ | \<< { @ the next line is an optional tweak for up to 5 variables | ||

+ | { "SHOW" \<< #A300Eh RCLF SIZE 3. < 2. * + LIBEVAL \>> } | ||

+ | { "DONE" { \<< 0. MENU CONT \>> \<< 0. MENU KILL \>> } } } + | ||

+ | TMENU RCLF SIZE 3. > #25EFFh #151A6h IFTE SYSEVAL PROMPT | ||

+ | \>> | ||

+ | @ Caution: First back up memory! Incorrect SYSEVALs are harmful! | ||

+ | @ Also note the difference between LIBEVAL and SYSEVAL | ||

+ | |||

+ | @ --- | ||

+ | |||

+ | @ Test program for INLIST[N]: | ||

+ | tinl | ||

+ | \<< "Test INLIST" | ||

+ | { { "Set VX to" 6. } { "Any Number" 0. 28. } "Required field" } | ||

+ | { X 123 } DUP INLIST | ||

+ | \>> @ or INLISTN to avoid NOVAL | ||

+ | @ Note that INFORM would throw an error on type code 28 | ||

+ | |||

+ | @ Complete INLIST (in UserRPL) for HP48G/49G/50G | ||

+ | INLIST | ||

+ | \<< 3. PICK TYPE 2. == { { } SWAP } IFT @ Omitted resets? | ||

+ | 3. PICK 1. \<< DROP NOVAL \>> DOSUBS @ Pad values lists | ||

+ | 1. DUP2 6. ROLL REPL 4. ROLLD ROT REPL @ To match prompts | ||

+ | 0. RCLF { GET DUP TYPE 2. == { 34. CHR SWAP OVER + + } | ||

+ | IFT DUP NOVAL SAME { DROP "" } IFT \->STR } RCLMENU \-> h. | ||

+ | p. b. a. n. f. c. m. \<< -55. SF 64. STWS STD DO IF h. p. | ||

+ | @ Build a new CHOOSE list (showing current values): | ||

+ | 1. \<< { } + 1. GET "=" + a. NSUB c. EVAL + NSUB 2. \->LIST | ||

+ | \>> DOSUBS { "<DONE>" "[Reset All]" } + 'n.' INCR | ||

+ | @ Exit or "reset all" if either was selected: | ||

+ | CHOOSE THEN DUP 'n.' STO IF TYPE THEN IF n. " " POS THEN | ||

+ | b. 'a.' STO 0. DUP 'n.' STO ELSE a. 1. 1. END ELSE | ||

+ | @ Get the prompt and current value for INPUT (editor): | ||

+ | p. n. GET { } + 1. GET \->STR a. n. c. EVAL 28. MENU | ||

+ | IFERR INPUT "{" SWAP + STR\-> DUP SIZE 1. > { DROP 7. DOERR } | ||

+ | @ Reset if null input, halt for CALC if "equal" command: | ||

+ | IFT LIST\-> NOT { b. n. GET } IFT { = } OVER POS { DROP | ||

+ | DEPTH \->LIST a. n. GET RCLF \-> s. v. g. \<< p. n. GET | ||

+ | { } + TAIL DUP SIZE NOT { { ALL } + } IFT "Types" \->TAG | ||

+ | f. STOF v. HALT g. STOF DEPTH NOT { v. } IFT DEPTH ROLLD | ||

+ | DEPTH 1. - DROPN s. LIST\-> DROP DEPTH ROLL \>> } IFT | ||

+ | @ Object type restrictions: | ||

+ | DUP NOVAL SAME NOT { p. n. GET { } + TAIL DUP SIZE | ||

+ | { 0. ADD OVER TYPE POS NOT { DROP 7. DOERR } IFT } | ||

+ | { DROP } IFTE } IFT @ Okay @ 'a.' n. ROT PUT THEN | ||

+ | ERRN B\->R { "Invalid object or type" MSGBOX } IFT | ||

+ | 'n.' DECR DROP END m. TMENU 0. END | ||

+ | ELSE 0. 1. END UNTIL END f. STOF \>> | ||

+ | \>> | ||

+ | |||

+ | @ Auxiliary programs: | ||

+ | |||

+ | @ Loop on INLIST until no undefined value (NOVAL) in results | ||

+ | @ [takes the same args as INLIST] | ||

+ | INLISTN | ||

+ | \<< 3. PICK TYPE 2. == { { } SWAP } IFT 4. ROLLD \-> | ||

+ | t. p. b. \<< 1. DO DROP t. p. b. 4. ROLL INLIST DUP DUP | ||

+ | { DROP OVER NOVAL POS } IFT UNTIL NOT END \>> | ||

+ | \>> | ||

+ | |||

+ | @ Loop on INFORM until no undefined value (NOVAL) in results | ||

+ | @ [takes the same args as INFORM] | ||

+ | INFORMN | ||

+ | \<< 5. ROLLD \-> t. p. f. b. \<< 1. DO DROP t. p. f. b. | ||

+ | 5. ROLL INFORM DUP DUP { DROP OVER NOVAL POS } IFT | ||

+ | UNTIL NOT END \>> | ||

+ | \>> | ||

+ | |||

+ | @ This takes args for INFORM, but calls INLIST instead | ||

+ | INFORML | ||

+ | \<< ROT DROP ROT 1. \<< { } + DUP SIZE { DUP HEAD SWAP TAIL TAIL | ||

+ | + } { DROP } IFTE \>> DOSUBS ROT ROT INLIST | ||

+ | \>> | ||

+ | |||

+ | @ This takes args for INLIST, but calls INFORM instead | ||

+ | INLISTF | ||

+ | \<< 3. PICK TYPE 2. == { { } SWAP } IFT ROT 1. \<< { } + | ||

+ | DUP HEAD "" + { "" } + SWAP TAIL + \>> DOSUBS DUP SIZE | ||

+ | DUP 4. MIN / CEIL 4. ROLL 4. ROLL INFORM | ||

+ | \>> | ||

+ | |||

+ | @############################################################################# | ||

+ | @# | ||

+ | @# | ||

+ | @# | ||

+ | @ some expanding data structures speed test | ||

+ | @ as expanding lists is costly | ||

+ | | ||

+ | gpListExp | ||

+ | \<< @on an emu48 emulator on a pentium M 1.73ghz , 741 seconds. Woah. | ||

+ | \<< @always expand a list | ||

+ | {} | ||

+ | 1 1000 | ||

+ | FOR lvK | ||

+ | lvK + | ||

+ | NEXT | ||

+ | \>> | ||

+ | TEVAL | ||

+ | "listExp" | ||

+ | \>> | ||

+ | | ||

+ | gpListRepl | ||

+ | \<< @on an emu48 emulator on a pentium M 1.73ghz , 917 seconds. Woah. | ||

+ | \<< @preallocate list and replace elements | ||

+ | 0 1000 NDUPN \->LIST | ||

+ | 1 1000 | ||

+ | FOR lvK | ||

+ | lvK lvK PUT | ||

+ | NEXT | ||

+ | \>> | ||

+ | TEVAL | ||

+ | "listRepl" | ||

+ | \>> | ||

+ | | ||

+ | gpVectRepl | ||

+ | \<< @on an emu48 emulator on a pentium M 1.73ghz , 11.43 seconds. that's fast | ||

+ | \<< @preallocate list and replace elements | ||

+ | 0 1000 NDUPN \->ARRY | ||

+ | 1 1000 | ||

+ | FOR lvK | ||

+ | lvK lvK PUT | ||

+ | NEXT | ||

+ | \>> | ||

+ | TEVAL | ||

+ | "vectRepl" | ||

+ | \>> | ||

+ | | ||

+ | @################################## | ||

+ | @# | ||

+ | @# Links and todo | ||

+ | | ||

+ | linksAndTodo | ||

+ | " | ||

+ | - For programs that are not yet ported in this library (including some testing) | ||

+ | at least links to the source may help, as long as the link is valid | ||

+ | and the source is reachable (that, as experience shows, is better not to take | ||

+ | for granted on internet) | ||

+ | | ||

+ | - when expanding large lists (over 100 elements) the execution become stuck in the mud. | ||

+ | How is it with arrays? (although arrays are less expressive than lists) | ||

+ | How is it with pre allocated large lists where elements gets replaced from their | ||

+ | dummy value and how it is with pre allocated attays? | ||

+ | | ||

+ | Is there some gain in speed? | ||

+ | | ||

+ | - arguments check | ||

+ | http://www.hpmuseum.org/forum/thread-7955-post-92718.html#pid92718 | ||

+ | | ||

+ | - An example of thousands separator | ||

+ | http://www.hpmuseum.org/forum/thread-8555-post-92731.html#pid92731 | ||

+ | | ||

+ | - displaying long text in a 'page' | ||

+ | http://www.hpmuseum.org/forum/thread-4635-post-41692.html#pid41692 | ||

+ | | ||

+ | - quicksort | ||

+ | ftp://www.hpmuseum.org/lif/swap/swap10/hp28v6n7.txt | ||

+ | | ||

+ | - mirror bits | ||

+ | http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv018.cgi?read=144896 | ||

+ | | ||

+ | - digits not in a number | ||

+ | http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv019.cgi?read=171632 | ||

+ | | ||

+ | - add also a list to a list, without exploding the added list | ||

+ | http://www.hpmuseum.org/forum/thread-8555-post-93881.html#pid93881 | ||

+ | | ||

+ | - list processing and commands missing from goferlist / listExt and discussion about | ||

+ | list / vector data structures | ||

+ | http://www.hpmuseum.org/forum/thread-8209.html | ||

+ | http://www.hpmuseum.org/forum/thread-8555.html | ||

+ | http://www.hpmuseum.org/forum/thread-8555-post-94028.html#pid94028 | ||

+ | (the above about multiple PUTs) | ||

+ | | ||

+ | - http://www.hpmuseum.org/forum/thread-8853.html | ||

+ | how many divisors of X. sum of divisors. Sum of proper divisors. | ||

+ | Product of all the divisors. | ||

+ | | ||

+ | | ||

+ | - improving the angle between vectors | ||

+ | http://www.hpmuseum.org/forum/thread-10271-post-93744.html#pid93744 | ||

+ | | ||

+ | - program to convert ascii text in usrpl for SD card programs and emulators | ||

+ | https://groups.google.com/forum/#!msg/comp.sys.hp48/loZFVECTxpY/QhzxPAvZfk4J | ||

+ | also on the emu48 official page. | ||

+ | http://hp.giesselink.com/emu48.htm | ||

+ | (can be that there are other alternatives around, would be nice to at least list them) | ||

+ | workaround: using com0com for the emulator and conn4x as the virtual calculator | ||

+ | would be a real one. | ||

+ | http://www.hpmuseum.org/forum/thread-7955-post-96874.html#pid96874 | ||

+ | | ||

+ | - create a so called 'anti identity matrix' | ||

+ | http://www.hpmuseum.org/forum/thread-10735.html | ||

+ | | ||

+ | - http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv019.cgi?read=159351 | ||

+ | some programs about housekeeping directories. | ||

+ | |||

+ | doneTodos | ||

+ | - http://www.hpmuseum.org/forum/thread-8555-post-94235.html#pid94235 | ||

+ | (list min, list max) | ||

+ | | ||

+ | - need is the main source of motivation to expand one's set of available solutions. | ||

+ | Too long it took to include percentile functions. | ||

+ | " | ||

+ | |||

+ | linkAndChallenges | ||

+ | " | ||

+ | - in general the various online discussion places (see http://www.wiki4hp.com/doku.php?id=resources:start) are full of | ||

+ | math and programming challenges that are hard to be found, though. So collecting them in a list | ||

+ | (thing that is missing since years) wouldn't be bad. | ||

+ | | ||

+ | - How many integers (from 1 to 9999) are evenly divisible by the number of letters in their name? | ||

+ | http://www.hpmuseum.org/forum/thread-2882.html | ||

+ | | ||

+ | - sum of squares given a fixed list of values | ||

+ | http://www.hpmuseum.org/forum/thread-9962.html | ||

+ | " | ||

+ | END</file> | ||

rpl/start.txt · Last modified: 2019/02/17 12:33 by pier4r