mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-18 10:35:55 +00:00
147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
/****************************************************************
|
|
|
|
The author of this software is David M. Gay.
|
|
|
|
Copyright (C) 1998-2001 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
|
|
*/
|
|
|
|
/* Test program for g_ffmt, strtof, strtoIf, strtopf, and strtorf.
|
|
*
|
|
* Inputs (on stdin):
|
|
* r rounding_mode
|
|
* n ndig
|
|
* number
|
|
* #hex
|
|
*
|
|
* rounding_mode values:
|
|
* 0 = toward zero
|
|
* 1 = nearest
|
|
* 2 = toward +Infinity
|
|
* 3 = toward -Infinity
|
|
*
|
|
* where number is a decimal floating-point number,
|
|
* hex is a string of <= 8 Hex digits for the internal representation
|
|
* of the number, and ndig is a parameters to g_ffmt.
|
|
*/
|
|
|
|
#include "gdtoa.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
extern int getround ANSI((int,char*));
|
|
|
|
static char ibuf[2048], obuf[1024];
|
|
|
|
#define U (unsigned long)
|
|
|
|
int
|
|
main(Void)
|
|
{
|
|
ULong *L;
|
|
char *s, *se, *se1;
|
|
int dItry, i, i1, ndig = 0, r = 1;
|
|
float f, f1, fI[2];
|
|
|
|
L = (ULong*)&f;
|
|
while( (s = fgets(ibuf, sizeof(ibuf), stdin)) !=0) {
|
|
while(*s <= ' ')
|
|
if (!*s++)
|
|
continue;
|
|
dItry = 0;
|
|
switch(*s) {
|
|
case 'r':
|
|
r = getround(r, s);
|
|
continue;
|
|
case 'n':
|
|
i = s[1];
|
|
if (i <= ' ' || i >= '0' && i <= '9') {
|
|
ndig = atoi(s+1);
|
|
continue;
|
|
}
|
|
break; /* nan? */
|
|
case '#':
|
|
sscanf(s+1, "%lx", &L[0]);
|
|
printf("\nInput: %s", ibuf);
|
|
printf(" --> f = #%lx\n", L[0]);
|
|
goto fmt_test;
|
|
}
|
|
dItry = 1;
|
|
printf("\nInput: %s", ibuf);
|
|
i = strtorf(ibuf, &se, r, &f);
|
|
if (r == 1) {
|
|
if (f != (i1 = strtopf(ibuf, &se1, &f1), f1)
|
|
|| se != se1 || i != i1) {
|
|
printf("***strtopf and strtorf disagree!!\n");
|
|
if (f != f1)
|
|
printf("\tf1 = %g\n", (double)f1);
|
|
if (i != i1)
|
|
printf("\ti = %d but i1 = %d\n", i, i1);
|
|
if (se != se1)
|
|
printf("se - se1 = %d\n", (int)(se-se1));
|
|
}
|
|
if (f != strtof(ibuf, &se1) || se != se1)
|
|
printf("***strtof and strtorf disagree!\n");
|
|
}
|
|
printf("strtof consumes %d bytes and returns %.8g = #%lx\n",
|
|
(int)(se-ibuf), f, U *(ULong*)&f);
|
|
fmt_test:
|
|
se = g_ffmt(obuf, &f, ndig, sizeof(obuf));
|
|
printf("g_ffmt(%d) gives %d bytes: \"%s\"\n\n",
|
|
ndig, (int)(se-obuf), se ? obuf : "<null>");
|
|
if (!dItry)
|
|
continue;
|
|
printf("strtoIf returns %d,", strtoIf(ibuf, &se, fI, &fI[1]));
|
|
printf(" consuming %d bytes.\n", (int)(se-ibuf));
|
|
if (fI[0] == fI[1]) {
|
|
if (fI[0] == f)
|
|
printf("fI[0] == fI[1] == strtof\n");
|
|
else
|
|
printf("fI[0] == fI[1] = #%lx = %.8g\n",
|
|
U *(ULong*)fI, fI[0]);
|
|
}
|
|
else {
|
|
printf("fI[0] = #%lx = %.8g\nfI[1] = #%lx = %.8g\n",
|
|
U *(ULong*)fI, fI[0],
|
|
U *(ULong*)&fI[1], fI[1]);
|
|
if (fI[0] == f)
|
|
printf("fI[0] == strtof\n");
|
|
else if (fI[1] == f)
|
|
printf("fI[1] == strtof\n");
|
|
else
|
|
printf("**** Both differ from strtof ****\n");
|
|
}
|
|
printf("\n");
|
|
}
|
|
return 0;
|
|
}
|