Provided by: libbson-doc_1.3.1-1_all 

NAME
bson_vsnprintf() - Like bson_snprintf() but allows for variadic parameters.
SYNOPSIS
int
bson_vsnprintf (char *str,
size_t size,
const char *format,
va_list ap) BSON_GNUC_PRINTF (3, 0);
PARAMETERS
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.
DESCRIPTION
Like bson_snprintf() but allows for variadic parameters.
RETURNS
The number of bytes written to str excluding the \0 byte.
COLOPHON
This page is part of libbson. Please report any bugs at https://jira.mongodb.org/browse/CDRIVER.
libbson 2016‐01‐18 BSON_VSNPRINTF(3)