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math.functions: some silly cleanup.

db4
John Benediktsson 2015-06-02 11:54:05 -07:00
parent ec6e3c218c
commit 14ed9a5455
1 changed files with 5 additions and 4 deletions
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basis/math/functions/functions.factor
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@ -238,18 +238,20 @@ M: complex log >polar [ flog ] dip rect> ; inline
: most-negative-finite-float ( -- x )
-0x1.ffff,ffff,ffff,fp1023 >integer ; inline
: most-positive-finite-float ( -- x )
0x1.ffff,ffff,ffff,fp1023 >integer ; inline
CONSTANT: log-2 0x1.62e42fefa39efp-1
CONSTANT: log10-2 0x1.34413509f79ffp-2
: (representable-as-float?) ( x -- ? )
: representable-as-float? ( x -- ? )
most-negative-finite-float
most-positive-finite-float between? ; inline
: (bignum-log) ( n log-quot: ( x -- y ) log-2 -- log )
[ dup ] dip '[
dup (representable-as-float?)
dup representable-as-float?
[ >float @ ] [ frexp [ @ ] [ _ * ] bi* + ] if
] call ; inline
@ -368,8 +370,7 @@ M: real tanh >float tanh ; inline
dup [-1,1]? [ >float fasin ] [ i* asinh -i* ] if ; inline
: acos ( x -- y )
dup [-1,1]? [ >float facos ] [ asin pi 2 / swap - ] if ;
inline
dup [-1,1]? [ >float facos ] [ asin pi 2 / swap - ] if ; inline
GENERIC: atan ( x -- y ) foldable