| /* w_powl.c -- long double version of w_pow.c. |
| * Conversion to long double by Ulrich Drepper, |
| * Cygnus Support, drepper@cygnus.com. |
| */ |
| |
| /* |
| * ==================================================== |
| * 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 powl(x,y) return x**y |
| */ |
| |
| #include <math.h> |
| #include "math_private.h" |
| |
| |
| #ifdef __STDC__ |
| long double __powl(long double x, long double y)/* wrapper powl */ |
| #else |
| long double __powl(x,y) /* wrapper powl */ |
| long double x,y; |
| #endif |
| { |
| #ifdef _IEEE_LIBM |
| return __ieee754_powl(x,y); |
| #else |
| long double z; |
| z=__ieee754_powl(x,y); |
| if(_LIB_VERSION == _IEEE_|| __isnanl(y)) return z; |
| if(__isnanl(x)) { |
| if(y==0.0) |
| return __kernel_standard(x,y,242); /* pow(NaN,0.0) */ |
| else |
| return z; |
| } |
| if(x==0.0) { |
| if(y==0.0) |
| return __kernel_standard(x,y,220); /* pow(0.0,0.0) */ |
| if(__finitel(y)&&y<0.0) { |
| if (signbit (x) && signbit (z)) |
| return __kernel_standard(x,y,223); /* pow(-0.0,negative) */ |
| else |
| return __kernel_standard(x,y,243); /* pow(+0.0,negative) */ |
| } |
| return z; |
| } |
| if(!__finitel(z)) { |
| if(__finitel(x)&&__finitel(y)) { |
| if(__isnanl(z)) |
| return __kernel_standard(x,y,224); /* pow neg**non-int */ |
| else |
| return __kernel_standard(x,y,221); /* pow overflow */ |
| } |
| } |
| if(z==0.0&&__finitel(x)&&__finitel(y)) |
| return __kernel_standard(x,y,222); /* pow underflow */ |
| return z; |
| #endif |
| } |
| weak_alias (__powl, powl) |
