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| author | Jeff Andersen <jeffandersen@google.com> | 2018-03-20 12:05:49 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2018-03-27 18:22:22 +0000 |
| commit | 97871a1ca883ee8116f0e56968a070d8db42c98d (patch) | |
| tree | 8cc2b3f9f45dd3260c0bb81f9e6317f865cafa70 /include | |
| parent | bee6d1a877d2fb89379f778fd71505186f53a1a0 (diff) | |
| download | chrome-ec-97871a1ca883ee8116f0e56968a070d8db42c98d.tar.gz | |
Add vsnprintf function.
This function enables variadic functions to take advantage
of functionality provided by snprintf.
Signed-off-by: Jeff Andersen <jeffandersen@google.com>
BRANCH=none
BUG=none
TEST=make buildall -j
Change-Id: I0095a96339b374ef8030b87b5184fa4678b439eb
Reviewed-on: https://chromium-review.googlesource.com/971761
Commit-Ready: Jeff Andersen <jeffandersen@google.com>
Tested-by: Jeff Andersen <jeffandersen@google.com>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/982313
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/printf.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/printf.h b/include/printf.h index 96913bb601..441a7968f3 100644 --- a/include/printf.h +++ b/include/printf.h @@ -83,4 +83,17 @@ int vfnprintf(int (*addchar)(void *context, int c), void *context, */ int snprintf(char *str, int size, const char *format, ...); +/** + * Print formatted outut to a string. + * + * Guarantees null-termination if size!=0. + * + * @param str Destination string + * @param size Size of destination in bytes + * @param format Format string + * @param args Parameters + * @return EC_SUCCESS, or non-zero if output was truncated. + */ +int vsnprintf(char *str, int size, const char *format, va_list args); + #endif /* __CROS_EC_PRINTF_H */ |