From 2c6cfe6853a30deb4af842aacc924fa298d0521a Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Mon, 19 Dec 2005 12:11:38 +0000 Subject: Updated to fedora-glibc-20051219T1003 --- math/w_pow.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 math/w_pow.c (limited to 'math/w_pow.c') diff --git a/math/w_pow.c b/math/w_pow.c new file mode 100644 index 0000000000..707cffcc43 --- /dev/null +++ b/math/w_pow.c @@ -0,0 +1,70 @@ + + +/* @(#)w_pow.c 5.2 93/10/01 */ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* + * wrapper pow(x,y) return x**y + */ + +#include +#include "math_private.h" + + +#ifdef __STDC__ + double __pow(double x, double y) /* wrapper pow */ +#else + double __pow(x,y) /* wrapper pow */ + double x,y; +#endif +{ +#ifdef _IEEE_LIBM + return __ieee754_pow(x,y); +#else + double z; + z=__ieee754_pow(x,y); + if(_LIB_VERSION == _IEEE_|| __isnan(y)) return z; + if(__isnan(x)) { + if(y==0.0) + return __kernel_standard(x,y,42); /* pow(NaN,0.0) */ + else + return z; + } + if(x==0.0) { + if(y==0.0) + return __kernel_standard(x,y,20); /* pow(0.0,0.0) */ + if(__finite(y)&&y<0.0) { + if (signbit (x) && signbit (z)) + return __kernel_standard(x,y,23); /* pow(-0.0,negative) */ + else + return __kernel_standard(x,y,43); /* pow(+0.0,negative) */ + } + return z; + } + if(!__finite(z)) { + if(__finite(x)&&__finite(y)) { + if(__isnan(z)) + return __kernel_standard(x,y,24); /* pow neg**non-int */ + else + return __kernel_standard(x,y,21); /* pow overflow */ + } + } + if(z==0.0&&__finite(x)&&__finite(y)) + return __kernel_standard(x,y,22); /* pow underflow */ + return z; +#endif +} +weak_alias (__pow, pow) +#ifdef NO_LONG_DOUBLE +strong_alias (__pow, __powl) +weak_alias (__pow, powl) +#endif -- cgit v1.2.3