75 lines
2.2 KiB
Factor
Executable File
75 lines
2.2 KiB
Factor
Executable File
USING: kernel math sequences namespaces hashtables words
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arrays parser compiler syntax io prettyprint optimizer
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random math.constants math.functions layouts random-tester.utils ;
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IN: random-tester
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! Tweak me
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: max-length 15 ; inline
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: max-value 1000000000 ; inline
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! varying bit-length random number
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: random-bits ( n -- int )
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random 2 swap ^ random ;
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: random-seq ( -- seq )
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{ [ ] { } V{ } "" } random
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[ max-length random [ max-value random , ] times ] swap make ;
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: random-string
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[ max-length random [ max-value random , ] times ] "" make ;
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: special-integers ( -- seq ) \ special-integers get ;
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[ { -1 0 1 } % most-negative-fixnum , most-positive-fixnum , first-bignum , ]
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{ } make \ special-integers set-global
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: special-floats ( -- seq ) \ special-floats get ;
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[ { 0.0 -0.0 } % e , pi , 1./0. , -1./0. , 0./0. , epsilon , epsilon neg , ]
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{ } make \ special-floats set-global
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: special-complexes ( -- seq ) \ special-complexes get ;
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[
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{ -1 0 1 C{ 0 1 } C{ 0 -1 } } %
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e , e neg , pi , pi neg ,
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0 pi rect> , 0 pi neg rect> , pi neg 0 rect> , pi pi rect> ,
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pi pi neg rect> , pi neg pi rect> , pi neg pi neg rect> ,
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e neg e neg rect> , e e rect> ,
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] { } make \ special-complexes set-global
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: random-fixnum ( -- fixnum )
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most-positive-fixnum random 1+ 50% [ neg 1- ] when >fixnum ;
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: random-bignum ( -- bignum )
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400 random-bits first-bignum + 50% [ neg ] when ;
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: random-integer ( -- n )
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50% [
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random-fixnum
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] [
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50% [ random-bignum ] [ special-integers get random ] if
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] if ;
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: random-positive-integer ( -- int )
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random-integer dup 0 < [
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neg
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] [
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dup 0 = [ 1 + ] when
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] if ;
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: random-ratio ( -- ratio )
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1000000000 dup [ random ] 2apply 1+ / 50% [ neg ] when dup [ drop random-ratio ] unless 10% [ drop 0 ] when ;
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: random-float ( -- float )
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50% [ random-ratio ] [ special-floats get random ] if
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50%
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[ .0000000000000000001 /f ] [ 50% [ .00000000000000001 * ] when ] if
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>float ;
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: random-number ( -- number )
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{
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[ random-integer ]
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[ random-ratio ]
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[ random-float ]
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} do-one ;
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: random-complex ( -- C )
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random-number random-number rect> ;
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