/**************************************************************** The author of this software is David M. Gay. Copyright (C) 1998, 2000 by Lucent Technologies All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that the copyright notice and this permission notice and warranty disclaimer appear in supporting documentation, and that the name of Lucent or any of its entities not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY SPECIAL, 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. ****************************************************************/ /* Please send bug reports to David M. Gay Bell Laboratories, Room 2C-463 600 Mountain Avenue Murray Hill, NJ 07974-0636 U.S.A. dmg@bell-labs.com */ #include "gdtoaimp.h" float #ifdef KR_headers strtof(s, sp) CONST char *s; char **sp; #else strtof(CONST char *s, char **sp) #endif { #ifdef Sudden_Underflow static FPI fpi = { 24, 1-127-24+1, 254-127-24+1, 1, 1 }; #else static FPI fpi = { 24, 1-127-24+1, 254-127-24+1, 1, 0 }; #endif ULong bits[1]; Long exp; int k; union { ULong L[1]; float f; } u; k = strtodg(s, sp, &fpi, &exp, bits); switch(k & STRTOG_Retmask) { case STRTOG_NoNumber: case STRTOG_Zero: u.L[0] = 0; break; case STRTOG_Normal: case STRTOG_NaNbits: u.L[0] = bits[0] & 0x7fffff | exp + 0x7f + 23 << 23; break; case STRTOG_Denormal: u.L[0] = bits[0]; break; case STRTOG_Infinite: u.L[0] = 0x7f800000; break; case STRTOG_NaN: u.L[0] = 0x7fffffff; } if (k & STRTOG_Neg) u.L[0] |= 0x80000000L; return u.f; }