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glibc/math/w_hypot.c
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| /* @(#)w_hypot.c 5.1 93/09/24 */ | |
| /* | |
| * ==================================================== | |
| * 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 hypot(x,y) | |
| */ | |
| #include <math.h> | |
| #include <math_private.h> | |
| double | |
| __hypot (double x, double y) | |
| { | |
| double z = __ieee754_hypot(x,y); | |
| if(__builtin_expect(!isfinite(z), 0) | |
| && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_) | |
| return __kernel_standard(x, y, 4); /* hypot overflow */ | |
| return z; | |
| } | |
| weak_alias (__hypot, hypot) | |
| #ifdef NO_LONG_DOUBLE | |
| strong_alias (__hypot, __hypotl) | |
| weak_alias (__hypot, hypotl) | |
| #endif |