| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* @(#)w_hypot.c 5.1 93/09/24 */ |
| 2 | /* |
| 3 | * ==================================================== |
| 4 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| 5 | * |
| 6 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
| 7 | * Permission to use, copy, modify, and distribute this |
| 8 | * software is freely granted, provided that this notice |
| 9 | * is preserved. |
| 10 | * ==================================================== |
| 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * wrapper hypot(x,y) |
| 15 | */ |
| 16 | |
| 17 | #include <math.h> |
| 18 | #include <math_private.h> |
| 19 | |
| 20 | |
| 21 | double |
| 22 | __hypot (double x, double y) |
| 23 | { |
| 24 | double z = __ieee754_hypot(x,y); |
| 25 | if(__builtin_expect(!isfinite(z), 0) |
| 26 | && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_) |
| 27 | return __kernel_standard(x, y, 4); /* hypot overflow */ |
| 28 | |
| 29 | return z; |
| 30 | } |
| 31 | weak_alias (__hypot, hypot) |
| 32 | #ifdef NO_LONG_DOUBLE |
| 33 | strong_alias (__hypot, __hypotl) |
| 34 | weak_alias (__hypot, hypotl) |
| 35 | #endif |