diff options
Diffstat (limited to 'include/printf.h')
| -rw-r--r-- | include/printf.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/printf.h b/include/printf.h index 7d9c2ab5e2..ea1445a526 100644 --- a/include/printf.h +++ b/include/printf.h @@ -68,7 +68,7 @@ * @param context Context pointer to pass to addchar() * @param format Format string (see above for acceptable formats) * @param args Parameters - * @return EC_SUCCESS, or non-zero if output was truncated. + * @return EC_SUCCESS, or EC_ERROR_OVERFLOW if the output was truncated. */ __stdlib_compat int vfnprintf(int (*addchar)(void *context, int c), void *context, const char *format, va_list args); @@ -81,12 +81,12 @@ __stdlib_compat int vfnprintf(int (*addchar)(void *context, int c), * @param str Destination string * @param size Size of destination in bytes * @param format Format string - * @return EC_SUCCESS, or non-zero if output was truncated. + * @return EC_SUCCESS, or EC_ERROR_OVERFLOW if the output was truncated. */ __stdlib_compat int snprintf(char *str, int size, const char *format, ...); /** - * Print formatted outut to a string. + * Print formatted output to a string. * * Guarantees null-termination if size!=0. * @@ -94,7 +94,8 @@ __stdlib_compat int snprintf(char *str, int size, const char *format, ...); * @param size Size of destination in bytes * @param format Format string * @param args Parameters - * @return EC_SUCCESS, or non-zero if output was truncated. + * @return The string length written to str, or a negative value on error. + * The negative values can be -EC_ERROR_INVAL or -EC_ERROR_OVERFLOW. */ __stdlib_compat int vsnprintf(char *str, int size, const char *format, va_list args); |