1 /**************************************************************** 2 3 The author of this software is David M. Gay. 4 5 Copyright (C) 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 strtod. */ 33 34 /* On stdin, read triples: d x y: 35 * d = decimal string 36 * x = high-order Hex value expected from strtod 37 * y = low-order Hex value 38 * Complain about errors. 39 */ 40 41 #include "gdtoa.h" /* for ULong */ 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 46 static int W0, W1; 47 typedef union { 48 double d; 49 ULong L[2]; 50 } U; 51 52 #define UL (unsigned long) 53 54 static int 55 process(char *fname, FILE *f) 56 { 57 U a, b; 58 char buf[2048]; 59 char *s, *s1, *se; 60 int line, n; 61 62 line = n = 0; 63 64 top: 65 while(fgets(s = buf, sizeof(buf), f)) { 66 line++; 67 while(*s <= ' ') 68 if (!*s++) 69 goto top; /* break 2 */ 70 if (*s == '#') 71 continue; 72 while(*s > ' ') 73 s++; 74 /* if (sscanf(s,"\t%lx\t%lx", &a.L[0], &a.L[1]) != 2) */ 75 if ((a.L[0] = (ULong)strtoul(s, &s1,16), s1 <= s) 76 || (a.L[1] = (ULong)strtoul(s1,&se,16), se <= s1)) { 77 printf("Badly formatted line %d of %s\n", 78 line, fname); 79 n++; 80 continue; 81 } 82 b.d = strtod(buf,0); 83 if (b.L[W0] != a.L[0] || b.L[W1] != a.L[1]) { 84 n++; 85 printf("Line %d of %s: got %lx %lx; expected %lx %lx\n", 86 line, fname, UL b.L[W0], UL b.L[W1], UL a.L[0], UL a.L[1]); 87 } 88 } 89 return n; 90 } 91 92 int 93 main(int argc, char **argv) 94 { 95 FILE *f; 96 char *prog, *s; 97 int n, rc; 98 U u; 99 100 prog = argv[0]; 101 if (argc == 2 && !strcmp(argv[1],"-?")) { 102 fprintf(stderr, "Usage: %s [file [file...]]\n" 103 "\tto read data file(s) of tab-separated triples d x y with\n" 104 "\t\td decimal string\n" 105 "\t\tx = high-order Hex value expected from strtod\n" 106 "\t\ty = low-order Hex value\n" 107 "\tComplain about errors by strtod.\n" 108 "\tIf no files, read triples from stdin.\n", 109 prog); 110 return 0; 111 } 112 113 /* determine endian-ness */ 114 115 u.d = 1.; 116 W0 = u.L[0] == 0; 117 W1 = 1 - W0; 118 119 /* test */ 120 121 n = rc = 0; 122 if (argc <= 1) 123 n = process("<stdin>", stdin); 124 else 125 while((s = *++argv)) 126 if ((f = fopen(s,"r"))) { 127 n += process(s, f); 128 fclose(f); 129 } 130 else { 131 rc = 2; 132 fprintf(stderr, "Cannot open %s\n", s); 133 } 134 printf("%d bad conversions\n", n); 135 if (n) 136 rc |= 1; 137 return rc; 138 } 139