mirror of
https://dicksdeathabove.xyz/~mia/psh-fractional
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Mia T. Rain
0207f421f4
---- had issues due to an edge case before:
------ eg: 49518.81665 - 22399.4358
------ produces: 47278.87307
------ correct: 27119.38085
---- this happened when ${#1} > ${#2}
---- if $2 contains decimals
-- tester:
---- now exits `1` if answer is "false"
-- division
---- debugging on going
45 lines
1.6 KiB
Plaintext
45 lines
1.6 KiB
Plaintext
---
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psh-fractional
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-- fractional math in pure sh, successor to psh-float-micro
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---
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Current Status
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-- addition ~85% working
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---- has some odd issues with decimals
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---- has issues with "Illegal number"
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------ eg: 18471.81672 + 27540.27237
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---- will debug at later date
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-- subtraction ~90% working
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---- had issues due to an edge case before: see last commit
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---- has an issue where $e in rad() somehow becomes malformed
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------ eg: 23019.18605 - 1139
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------ produces: 11629.18605
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------ correct: 21880.18605
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---- current method uses a system of removing the decimal from $1 & $2
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---- and then subtracting them; (m1-m2)
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---- the issue is likely in rad() as $((m1-m2)) is correct before
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---- being handed to rad()
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-- multiplication 100% working
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---- length issues when comparing to bc (produces additional decimals)
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------ I am not going to attempt to fix this
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------ it's really not an issue
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-- division ~90% working
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---- may sometimes produce to many decimals
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------ this will not be fixed
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---- rarely places decimals in wrong places
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------ eg: 324.81478 / 21715
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------ produces: 1.49580833525212986414
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------ correct: 0.01495808335252129864
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---- Some odd edge case with $dp is causing this...
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---- debugging ongoing
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---
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Outer Usage
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-- it is recommended to use this library with psh-fc
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-- if you wish to compare numbers that it produces
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-- as decimal numbers are not considered numbers by posix sh
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---- https://dicksdeathabove.xyz/~mia/psh-fc
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---
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Tester
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-- a tester is present at ./tester; it is ofc not pure sh as it compares with bc
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-- additionally using it requires that $RPATH is set to ?/psh-prng/ran
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---
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