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Added format specifiers

This commit is contained in:
hjp 2002-03-18 20:41:09 +00:00
parent b2a0e6b973
commit 5f95823fae
1 changed files with 22 additions and 5 deletions
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27
ieeefloat/ieeefloat.c
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@ -1,9 +1,12 @@
char ieeefloat_c_rcs_id[] = char ieeefloat_c_rcs_id[] =
"$Id: ieeefloat.c,v 1.2 2000-02-08 17:04:37 hjp Exp $"; "$Id: ieeefloat.c,v 1.3 2002-03-18 20:41:09 hjp Exp $";
/* ieeefloat: print binary representations of IEEE 754 FP numbers. /* ieeefloat: print binary representations of IEEE 754 FP numbers.
* *
* $Log: ieeefloat.c,v $ * $Log: ieeefloat.c,v $
* Revision 1.2 2000-02-08 17:04:37 hjp * Revision 1.3 2002-03-18 20:41:09 hjp
* Added format specifiers
*
* Revision 1.2 2000/02/08 17:04:37 hjp
* Added -f and -d options to force input to be float or double format. * Added -f and -d options to force input to be float or double format.
* *
* Revision 1.1 1998/03/20 20:09:53 hjp * Revision 1.1 1998/03/20 20:09:53 hjp
@ -50,9 +53,11 @@ typedef unsigned long long int doubleint;
char *cmnd; char *cmnd;
char *floatformat = "%24.7g";
char *doubleformat = "%24.17g";
static void usage(void) { static void usage(void) {
fprintf(stderr, "Usage: %s [-f|-d] fp-number ...\n", cmnd); fprintf(stderr, "Usage: %s [-f|-d] [-F format] [-D format] fp-number ...\n", cmnd);
exit(1); exit(1);
} }
@ -74,7 +79,8 @@ static void printfloat(float f) {
u.f = f; u.f = f;
printf("%24.7g: ", f); printf(floatformat, f);
printf(": ");
printf("%c ", (u.i & SIGN_FLT) ? '-' : '+'); printf("%c ", (u.i & SIGN_FLT) ? '-' : '+');
u.i &= ~SIGN_FLT; u.i &= ~SIGN_FLT;
e = u.i >> MANT_FLT; e = u.i >> MANT_FLT;
@ -102,7 +108,8 @@ static void printdouble(double f) {
u.f = f; u.f = f;
printf("%24.17g: ", f); printf(doubleformat, f);
printf(": ");
printf("%c ", (u.i & SIGN_DBL) ? '-' : '+'); printf("%c ", (u.i & SIGN_DBL) ? '-' : '+');
u.i &= ~SIGN_DBL; u.i &= ~SIGN_DBL;
e = u.i >> MANT_DBL; e = u.i >> MANT_DBL;
@ -169,6 +176,16 @@ int main(int argc, char**argv) {
} else if (strcmp(argv[i], "-d") == 0) { } else if (strcmp(argv[i], "-d") == 0) {
convfloat = 0; convfloat = 0;
continue; continue;
} else if (strcmp(argv[i], "-F") == 0) {
if (!argv[i+1]) usage();
floatformat = argv[i+1];
i++;
continue;
} else if (strcmp(argv[i], "-D") == 0) {
if (!argv[i+1]) usage();
doubleformat = argv[i+1];
i++;
continue;
} }
d = strtod(argv[i], &p); d = strtod(argv[i], &p);