1112158Sdas/**************************************************************** 2112158Sdas 3112158SdasThe author of this software is David M. Gay. 4112158Sdas 5112158SdasCopyright (C) 1998, 2000 by Lucent Technologies 6112158SdasAll Rights Reserved 7112158Sdas 8112158SdasPermission to use, copy, modify, and distribute this software and 9112158Sdasits documentation for any purpose and without fee is hereby 10112158Sdasgranted, provided that the above copyright notice appear in all 11112158Sdascopies and that both that the copyright notice and this 12112158Sdaspermission notice and warranty disclaimer appear in supporting 13112158Sdasdocumentation, and that the name of Lucent or any of its entities 14112158Sdasnot be used in advertising or publicity pertaining to 15112158Sdasdistribution of the software without specific, written prior 16112158Sdaspermission. 17112158Sdas 18112158SdasLUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 19112158SdasINCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 20112158SdasIN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 21112158SdasSPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 22112158SdasWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 23112158SdasIN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 24112158SdasARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 25112158SdasTHIS SOFTWARE. 26112158Sdas 27112158Sdas****************************************************************/ 28112158Sdas 29165743Sdas/* Please send bug reports to David M. Gay (dmg at acm dot org, 30165743Sdas * with " at " changed at "@" and " dot " changed to "."). */ 31112158Sdas 32112158Sdas#include "gdtoaimp.h" 33112158Sdas 34112158Sdas void 35112158Sdas#ifdef KR_headers 36112158SdasULtof(L, bits, exp, k) ULong *L; ULong *bits; Long exp; int k; 37112158Sdas#else 38112158SdasULtof(ULong *L, ULong *bits, Long exp, int k) 39112158Sdas#endif 40112158Sdas{ 41112158Sdas switch(k & STRTOG_Retmask) { 42112158Sdas case STRTOG_NoNumber: 43112158Sdas case STRTOG_Zero: 44112158Sdas *L = 0; 45112158Sdas break; 46112158Sdas 47112158Sdas case STRTOG_Normal: 48112158Sdas case STRTOG_NaNbits: 49219557Sdas L[0] = (bits[0] & 0x7fffff) | ((exp + 0x7f + 23) << 23); 50112158Sdas break; 51112158Sdas 52112158Sdas case STRTOG_Denormal: 53112158Sdas L[0] = bits[0]; 54112158Sdas break; 55112158Sdas 56112158Sdas case STRTOG_Infinite: 57112158Sdas L[0] = 0x7f800000; 58112158Sdas break; 59112158Sdas 60112158Sdas case STRTOG_NaN: 61165743Sdas L[0] = f_QNAN; 62112158Sdas } 63112158Sdas if (k & STRTOG_Neg) 64112158Sdas L[0] |= 0x80000000L; 65112158Sdas } 66112158Sdas 67112158Sdas int 68112158Sdas#ifdef KR_headers 69112158Sdasstrtorf(s, sp, rounding, f) CONST char *s; char **sp; int rounding; float *f; 70112158Sdas#else 71112158Sdasstrtorf(CONST char *s, char **sp, int rounding, float *f) 72112158Sdas#endif 73112158Sdas{ 74112158Sdas static FPI fpi0 = { 24, 1-127-24+1, 254-127-24+1, 1, SI }; 75112158Sdas FPI *fpi, fpi1; 76112158Sdas ULong bits[1]; 77112158Sdas Long exp; 78112158Sdas int k; 79112158Sdas 80112158Sdas fpi = &fpi0; 81112158Sdas if (rounding != FPI_Round_near) { 82112158Sdas fpi1 = fpi0; 83112158Sdas fpi1.rounding = rounding; 84112158Sdas fpi = &fpi1; 85112158Sdas } 86112158Sdas k = strtodg(s, sp, fpi, &exp, bits); 87112158Sdas ULtof((ULong*)f, bits, exp, k); 88112158Sdas return k; 89112158Sdas } 90