1 /**************************************************************** 2 3 The author of this software is David M. Gay. 4 5 Copyright (C) 1998-2001 by Lucent Technologies 6 All Rights Reserved 7 8 Permission to use, copy, modify, and distribute this software and 9 its documentation for any purpose and without fee is hereby 10 granted, provided that the above copyright notice appear in all 11 copies and that both that the copyright notice and this 12 permission notice and warranty disclaimer appear in supporting 13 documentation, and that the name of Lucent or any of its entities 14 not be used in advertising or publicity pertaining to 15 distribution of the software without specific, written prior 16 permission. 17 18 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 19 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. 20 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY 21 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 22 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER 23 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 24 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF 25 THIS SOFTWARE. 26 27 ****************************************************************/ 28 29 /* Please send bug reports to David M. Gay (dmg at acm dot org, 30 * with " at " changed at "@" and " dot " changed to "."). */ 31 32 /* Test program for g_dfmt, strtoId, strtod, strtopd, and strtord. 33 * 34 * Inputs (on stdin): 35 * r rounding_mode 36 * n ndig 37 * number 38 * #hex0 hex1 39 * 40 * rounding_mode values: 41 * 0 = toward zero 42 * 1 = nearest 43 * 2 = toward +Infinity 44 * 3 = toward -Infinity 45 * 46 * where number is a decimal floating-point number, 47 * hex0 is a string of Hex <= 8 digits for the most significant 48 * word of the number, hex1 is a similar string for the other 49 * (least significant) word, and ndig is a parameters to g_dfmt. 50 */ 51 52 #include "gdtoaimp.h" 53 #include <stdio.h> 54 #include <stdlib.h> 55 56 extern int getround ANSI((int,char*)); 57 58 static char ibuf[2048], obuf[1024]; 59 60 #define U (unsigned long) 61 62 int 63 main(Void) 64 { 65 char *s, *se, *se1; 66 double f1, fI[2]; 67 int i, i1, ndig = 0, r = 1; 68 long LL[2]; 69 union { double f; ULong L[2]; } u; 70 71 while( (s = fgets(ibuf, sizeof(ibuf), stdin)) !=0) { 72 while(*s <= ' ') 73 if (!*s++) 74 continue; 75 switch(*s) { 76 case 'r': 77 r = getround(r, s); 78 continue; 79 case 'n': 80 i = s[1]; 81 if (i <= ' ' || (i >= '0' && i <= '9')) { 82 ndig = atoi(s+1); 83 continue; 84 } 85 break; /* nan? */ 86 case '#': 87 LL[0] = u.L[_0]; 88 LL[1] = u.L[_1]; 89 sscanf(s+1, "%lx %lx", &LL[0], &LL[1]); 90 u.L[_0] = LL[0]; 91 u.L[_1] = LL[1]; 92 printf("\nInput: %s", ibuf); 93 printf("--> f = #%lx %lx\n", (long)u.L[_0], (long)u.L[_1]); 94 goto fmt_test; 95 } 96 printf("\nInput: %s", ibuf); 97 i = strtord(ibuf, &se, r, &u.f); 98 if (r == 1) { 99 if ((u.f != strtod(ibuf, &se1) || se1 != se)) 100 printf("***strtod and strtord disagree!!\n"); 101 i1 = strtopd(ibuf, &se, &f1); 102 if (i != i1 || u.f != f1 || se != se1) 103 printf("***strtord and strtopd disagree!!\n"); 104 } 105 printf("strtod consumes %d bytes and returns %d with f = %.17g = #%lx %lx\n", 106 (int)(se-ibuf), i, u.f, U u.L[_0], U u.L[_1]); 107 fmt_test: 108 se = g_dfmt(obuf, &u.f, ndig, sizeof(obuf)); 109 printf("g_dfmt(%d) gives %d bytes: \"%s\"\n\n", 110 ndig, (int)(se-obuf), se ? obuf : "<null>"); 111 if (*s == '#') 112 continue; 113 printf("strtoId returns %d,", strtoId(ibuf, &se, fI, &fI[1])); 114 printf(" consuming %d bytes.\n", (int)(se-ibuf)); 115 if (fI[0] == fI[1]) { 116 if (fI[0] == u.f) 117 printf("fI[0] == fI[1] == strtod\n"); 118 else 119 printf("fI[0] == fI[1] = #%lx %lx = %.17g\n", 120 U ((ULong*)fI)[_0], U ((ULong*)fI)[_1], 121 fI[0]); 122 } 123 else { 124 printf("fI[0] = #%lx %lx = %.17g\n", 125 U ((ULong*)fI)[_0], U ((ULong*)fI)[_1], fI[0]); 126 printf("fI[1] = #%lx %lx = %.17g\n", 127 U ((ULong*)&fI[1])[_0], U ((ULong*)&fI[1])[_1], 128 fI[1]); 129 if (fI[0] == u.f) 130 printf("fI[0] == strtod\n"); 131 else if (fI[1] == u.f) 132 printf("fI[1] == strtod\n"); 133 else 134 printf("**** Both differ from strtod ****\n"); 135 } 136 printf("\n"); 137 } 138 return 0; 139 } 140