| 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 | #include <math-svid-compat.h> |
|---|
| 20 | #include <libm-alias-double.h> |
|---|
| 21 | |
|---|
| 22 | |
|---|
| 23 | #if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_35) |
|---|
| 24 | double |
|---|
| 25 | __hypot_compat (double x, double y) |
|---|
| 26 | { |
|---|
| 27 | double z = __ieee754_hypot(x,y); |
|---|
| 28 | if(__builtin_expect(!isfinite(z), 0) |
|---|
| 29 | && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_) |
|---|
| 30 | return __kernel_standard(x, y, 4); /* hypot overflow */ |
|---|
| 31 | |
|---|
| 32 | return z; |
|---|
| 33 | } |
|---|
| 34 | compat_symbol (libm, __hypot_compat, hypot, GLIBC_2_0); |
|---|
| 35 | # ifdef NO_LONG_DOUBLE |
|---|
| 36 | weak_alias (__hypot_compat, hypotl) |
|---|
| 37 | # endif |
|---|
| 38 | # ifdef LONG_DOUBLE_COMPAT |
|---|
| 39 | LONG_DOUBLE_COMPAT_CHOOSE_libm_hypotl ( |
|---|
| 40 | compat_symbol (libm, __hypot_compat, hypotl, FIRST_VERSION_libm_hypotl), ); |
|---|
| 41 | # endif |
|---|
| 42 | #endif |
|---|
| 43 | |
|---|
