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cosmopolitan/test/libc/stdio
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Gabriel Ravier 75e161b27b
Fix printf-family functions on long double inf (#1273) 
Cosmopolitan's printf-family functions currently very poorly handle
being passed a long double infinity.

For instance, a program such as:

```cpp
#include <stdio.h>

int main()
{
    printf("%f\n", 1.0 / 0.0);
    printf("%Lf\n", 1.0L / 0.0L);
    printf("%e\n", 1.0 / 0.0);
    printf("%Le\n", 1.0L / 0.0L);
    printf("%g\n", 1.0 / 0.0);
    printf("%Lg\n", 1.0L / 0.0L);
}
```

will currently output the following:

```
inf
0.000000[followed by 32763 more zeros]
inf
N.aN0000e-32769
inf
N.aNe-32769
```

when the correct expected output would be:

```
inf
inf
inf
inf
inf
inf
```

This patch fixes this, and adds tests for the behavior.
2024-09-01 13:10:48 -07:00
..
BUILD.mk Implement proper time zone support 2024-05-04 23:06:37 -07:00
crypt_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
devrand_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
dirstream_test.c Delete ASAN 2024-06-22 05:45:49 -07:00
dtoa_test.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
dumphexc_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
ecvt_test.c Bring back gc() function 2024-01-08 10:26:28 -08:00
fds_torture_test.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
fgetln_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
fgets_test.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
fgetwc_test.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
fmemopen_test.c Bring back gc() function 2024-01-08 10:26:28 -08:00
fmt_test.c Support printf %n directive 2024-07-28 22:27:06 -07:00
fprintf_test.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
fputc_test.c Make fread() more consistent with glibc 2024-08-17 02:57:22 -07:00
fputs_test.c Bring back gc() function 2024-01-08 10:26:28 -08:00
fread_test.c Make fread() more consistent with glibc 2024-08-17 02:57:22 -07:00
freopen_test.c Fix fread() with 2gb+ sizes 2024-05-24 19:28:23 -07:00
fscanf_test.c *scanf() fixes to make TeX work (#1109) 2024-02-23 07:15:30 -08:00
fseeko_test.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
ftell_test.c Bring back gc() function 2024-01-08 10:26:28 -08:00
fwrite_test.c Implement proper time zone support 2024-05-04 23:06:37 -07:00
getdelim_test.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
getentropy_test.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
gz_test.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
iconv_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
joinstrlist_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
lemur64_test.c Introduce more CTL content 2024-06-27 22:42:32 -07:00
memory_test.c Bring back gc() function 2024-01-08 10:26:28 -08:00
mt19937_test.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
palandprintf_test.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
popen_test.c Improve lock hierarchy 2024-07-24 16:05:48 -07:00
rand_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
rngset_test.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
snprintf_test.c Fix printf-family functions on long double inf (#1273) 2024-09-01 13:10:48 -07:00
sprintf_s.inc flip et / noet in modelines 2023-12-07 22:17:11 -05:00
sprintf_s_test.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
sscanf_test.c *scanf() fixes to make TeX work (#1109) 2024-02-23 07:15:30 -08:00
tmpfile_test.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
ungetc_test.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
vappendf_test.c Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
zipdir_test.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00