/* $OpenBSD: isnormal.c,v 1.4 2008/12/10 01:15:02 martynas Exp $ */ /* * Copyright (c) 2008 Martynas Venckus * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include int __isnormal(double d) { struct ieee_double *p = (struct ieee_double *)&d; return (p->dbl_exp != 0 && p->dbl_exp != DBL_EXP_INFNAN); } int __isnormalf(float f) { struct ieee_single *p = (struct ieee_single *)&f; return (p->sng_exp != 0 && p->sng_exp != SNG_EXP_INFNAN); } #if LDBL_MANT_DIG == 53 #ifdef __weak_alias __weak_alias(__isnormall, __isnormal); #endif /* __weak_alias */ #endif /* LDBL_MANT_DIG == 53 */