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/* $OpenBSD: signbit.c,v 1.7 2013/07/03 04:46:36 espie Exp $ */ |
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/* |
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* Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <machine/ieee.h> |
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#include <float.h> |
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#include <math.h> |
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int |
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__signbit(double d) |
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{ |
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struct ieee_double *p = (struct ieee_double *)&d; |
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return p->dbl_sign; |
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} |
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int |
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__signbitf(float f) |
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{ |
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struct ieee_single *p = (struct ieee_single *)&f; |
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return p->sng_sign; |
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} |
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#if LDBL_MANT_DIG == DBL_MANT_DIG |
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__strong_alias(__signbitl, __signbit); |
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#endif /* LDBL_MANT_DIG == DBL_MANT_DIG */ |