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libs/posix: Fix printf handling for %F format.

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Before this patch, calling functions in the `printf` family and
passing %F in the format string, such as

    printf("%6.2F\n", 580.0f);

would incorrectly output numbers in the exponential format:

    5.8D+02

This patch fixes the output for this situation:

    580.00

and fixes the behavior for programs that use %F, such as
several tests for the `fish` shell.

Change-Id: I124a5a7b93b5f551fa190501a5778726812d347c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5424
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>
This commit is contained in:
Trung Nguyen
2022-07-11 09:52:59 +00:00
committed by Adrien Destugues
parent 26a39bed4a
commit ae7395c833
1 changed files with 7 additions and 7 deletions
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src/system/libroot/posix/glibc/stdio-common/printf_fp.c
+7 -7
View File
@@ -186,7 +186,7 @@ __printf_fp (FILE *fp,
/* Digit which is result of last hack_digit() call. */
wchar_t digit;
/* The type of output format that will be used: 'e'/'E' or 'f'. */
/* The type of output format that will be used: 'e'/'E' or 'f'/'F'. */
int type;
/* Counter for number of written characters. */
@@ -206,7 +206,7 @@ __printf_fp (FILE *fp,
mp_limb_t hi;
hack_digit:
if (expsign != 0 && type == 'f' && exponent-- > 0)
if (expsign != 0 && _tolower (type) == 'f' && exponent-- > 0)
hi = 0;
else if (scalesize == 0)
{
@@ -815,9 +815,9 @@ hack_digit_end:
dig_max = INT_MAX; /* Unlimited. */
significant = 1; /* Does not matter here. */
}
else if (info->spec == 'f')
else if (_tolower (info->spec) == 'f')
{
type = 'f';
type = info->spec;
fracdig_min = fracdig_max = info->prec < 0 ? 6 : info->prec;
if (expsign == 0)
{
@@ -888,7 +888,7 @@ hack_digit_end:
wcp = wstartp = wbuffer + 2; /* Let room for rounding. */
/* Do the real work: put digits in allocated buffer. */
if (expsign == 0 || type != 'f')
if (expsign == 0 || _tolower (type) != 'f')
{
assert (expsign == 0 || intdig_max == 1);
while (intdig_no < intdig_max)
@@ -992,7 +992,7 @@ hack_digit_callee3:
else
/* It is more critical. All digits were 9's. */
{
if (type != 'f')
if (_tolower (type) != 'f')
{
*wstartp = '1';
exponent += expsign == 0 ? 1 : -1;
@@ -1057,7 +1057,7 @@ hack_digit_callee3:
ngroups);
/* Write the exponent if it is needed. */
if (type != 'f')
if (_tolower (type) != 'f')
{
*wcp++ = (wchar_t) type;
*wcp++ = expsign ? L'-' : L'+';