43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/* @(#)w_hypot.c 5.1 93/09/24 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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* wrapper hypot(x,y)
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*/
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#include <math.h>
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#include <math_private.h>
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#include <math-svid-compat.h>
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#include <libm-alias-double.h>
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#if LIBM_SVID_COMPAT && SHLIB_COMPAT (libm, GLIBC_2_0, GLIBC_2_35)
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double
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__hypot_compat (double x, double y)
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{
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double z = __ieee754_hypot(x,y);
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if(__builtin_expect(!isfinite(z), 0)
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&& isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_)
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return __kernel_standard(x, y, 4); /* hypot overflow */
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return z;
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}
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compat_symbol (libm, __hypot_compat, hypot, GLIBC_2_0);
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# ifdef NO_LONG_DOUBLE
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weak_alias (__hypot_compat, hypotl)
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# endif
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# ifdef LONG_DOUBLE_COMPAT
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LONG_DOUBLE_COMPAT_CHOOSE_libm_hypotl (
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compat_symbol (libm, __hypot_compat, hypotl, FIRST_VERSION_libm_hypotl), );
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# endif
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#endif
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