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[svn] More correct handling of significant digit count with %g -- 0.002 has

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one significant digit, not three.
This commit is contained in:
hniksic 2005-04-16 16:02:39 -07:00
parent 9756b0adf5
commit dccc4a2d49
2 changed files with 42 additions and 7 deletions
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5
src/ChangeLog
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@ -1,3 +1,8 @@
2005-04-17 Hrvoje Niksic <hniksic@xemacs.org>
* snprintf.c (fmtfp): More correct handling of significant digit
count with %g -- 0.002 has one significant digit, not three.
2005-04-16 Hrvoje Niksic <hniksic@xemacs.org>
* retr.c (fd_read_body): Respect read timeout with non-interactive

44
src/snprintf.c
View File

@ -727,11 +727,24 @@ fmtfp (char *buffer, size_t *currlen, size_t maxlen,
includes the digits in intpart. */
if (flags & DP_F_FP_G)
{
LLONG temp = intpart;
for (temp = intpart; temp != 0; temp /= 10)
--max;
if (max < 0)
max = 0;
if (intpart != 0)
{
/* For each digit of INTPART, print one less fractional digit. */
LLONG temp = intpart;
for (temp = intpart; temp != 0; temp /= 10)
--max;
if (max < 0)
max = 0;
}
else
{
/* For each leading 0 in fractional part, print one more
fractional digit. */
LDOUBLE temp;
if (ufvalue != 0)
for (temp = ufvalue; temp < 0.1; temp *= 10)
++max;
}
}
/* C99: trailing zeros are removed from the fractional portion of the
@ -916,6 +929,8 @@ main (void)
char buf1[LONG_STRING];
char buf2[LONG_STRING];
char *fp_fmt[] = {
/* %f formats */
"%f",
"%-1.5f",
"%1.5f",
"%123.9f",
@ -929,13 +944,28 @@ main (void)
"%3.2f",
"%.0f",
"%.1f",
"%-1.5g",
"%#10.1f",
#if SIZEOF_LONG_LONG != 0
"%.16f",
"%18.16f",
"%-16.16f",
#endif
/* %g formats */
"%g",
"%1.5g",
"%-1.5g",
"%.9g",
"%123.9g",
"%#123.9g",
#if SIZEOF_LONG_LONG != 0
"%.16g",
"%20.16g",
#endif
NULL
};
double fp_nums[] = { -1.5, 134.21, 91340.2, 341.1234, 0203.9, 0.96, 0.996,
0.9996, 1.996, 4.136, 0.00205, 0};
0.9996, 1.996, 4.136, 0.00205, 0.0001, 321.000009,
0};
char *int_fmt[] = {
"%-1.5d",
"%1.5d",