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patch 7.4.2266

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Problem:    printf() test fails on Windows. "-inf" is not used.
Solution:   Check for Windows-specific values for "nan".  Add sign to "inf"
            when appropriate.
This commit is contained in:
Bram Moolenaar
2016-08-27 15:26:35 +02:00
parent 76efafba2a
commit 9992237a3e
3 changed files with 32 additions and 7 deletions
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29
src/message.c
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@@ -4701,6 +4701,7 @@ vim_vsnprintf(
char format[40];
int l;
int remove_trailing_zeroes = FALSE;
char *s;
f =
# if defined(FEAT_EVAL)
@@ -4730,8 +4731,16 @@ vim_vsnprintf(
)
{
/* Avoid a buffer overflow */
strcpy(tmp, "inf");
str_arg_l = 3;
if (f < 0)
{
strcpy(tmp, "-inf");
str_arg_l = 4;
}
else
{
strcpy(tmp, "inf");
str_arg_l = 3;
}
}
else
{
@@ -4753,6 +4762,22 @@ vim_vsnprintf(
format[l + 1] = NUL;
str_arg_l = sprintf(tmp, format, f);
/* Be consistent: Change "1.#IND" to "nan" and
* "1.#INF" to "inf". */
s = *tmp == '-' ? tmp + 1 : tmp;
if (STRNCMP(s, "1.#INF", 6) == 0)
STRCPY(s, "inf");
else if (STRNCMP(s, "1.#IND", 6) == 0)
STRCPY(s, "nan");
/* Remove sign before "nan". */
if (STRNCMP(tmp, "-nan", 4) == 0)
STRCPY(tmp, "nan");
/* Add sign before "inf" if needed. */
if (isinf(f) == -1 && STRNCMP(tmp, "inf", 3) == 0)
STRCPY(tmp, "-inf");
if (remove_trailing_zeroes)
{
int i;