Pseudo-random numbers/Splitmix64: Difference between revisions
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(→{{header|REXX}}: added the computer programming language REXX.) |
m (→{{header|REXX}}: changed output format, reduce the number of decimal digits for calculations.) |
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=={{header|REXX}}== |
=={{header|REXX}}== |
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<lang rexx>/*REXX program generates pseudo─random numbers using the split mix 64 bit method.*/ |
<lang rexx>/*REXX program generates pseudo─random numbers using the split mix 64 bit method.*/ |
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numeric digits |
numeric digits 200 /*ensure enough decimal digs for mult. */ |
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parse arg n reps pick seed1 seed2 . /*obtain optional arguments from the CL*/ |
parse arg n reps pick seed1 seed2 . /*obtain optional arguments from the CL*/ |
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if n=='' | n=="," then n= 5 /*Not specified? Then use the default.*/ |
if n=='' | n=="," then n= 5 /*Not specified? Then use the default.*/ |
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say |
say |
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if reps==0 then exit 0 /*stick a fork in it, we're all done. */ |
if reps==0 then exit 0 /*stick a fork in it, we're all done. */ |
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say center('#', w) " count of pseudo─random #" |
say center('#', w) " count of pseudo─random #" |
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say copies('═', w) " |
say copies('═', w) " ════════════════════════════" |
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state= seed2 /* " the state to seed #2. */ |
state= seed2 /* " the state to seed #2. */ |
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@.= 0; div= pick / 2**64 /*convert division to inverse multiply.*/ |
@.= 0; div= pick / 2**64 /*convert division to inverse multiply.*/ |
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do #=0 for pick |
do #=0 for pick |
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say right(#':', w)" " right(commas(@.#), |
say right(#':', w)" " right(commas(@.#), 15) /*show count of a random num.*/ |
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end /*#*/ |
end /*#*/ |
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exit 0 /*stick a fork in it, we're all done. */ |
exit 0 /*stick a fork in it, we're all done. */ |
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5: 16,408,922,859,458,223,821 |
5: 16,408,922,859,458,223,821 |
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# count of pseudo─random # |
# count of pseudo─random # |
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═══ ════════════════════════════ |
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═══ ══════════════════════════ |
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0: 20,027 |
0: 20,027 |
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1: 19,892 |
1: 19,892 |
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2: 20,073 |
2: 20,073 |
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3: 19,978 |
3: 19,978 |
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4: 20,030 |
4: 20,030 |
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</pre> |
</pre> |
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