bson_vsnprintf - Man Page

int
bson_vsnprintf (char *str, size_t size, const char *format, va_list ap)
   BSON_GNUC_PRINTF (3, 0);

• str: A location for the resulting string.
• size: The size of str in bytes.
• format: A printf style format string.
• ap: A va_list of parameters for the format.

Like bson_snprintf() but allows for variadic parameters.

The number of bytes written to str excluding the \0 byte.

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