int64_t

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                             BSON_ASCII_STRTOLL(3)

       A portable version of strtoll().

       Converts  a  string  to  a 64-bit signed integer according to the given base, which must be 16, 10, or 8.
       Leading whitespace will be ignored.

       If base is 0 is passed in, the base is inferred from the string's  leading  characters.  Base-16  numbers
       start with "0x" or "0X", base-8 numbers start with "0", base-10 numbers start with a digit from 1 to 9.

       If endptr is not NULL, it will be assigned the address of the first invalid character of str, or its null
       terminating byte if the entire string was valid.

       If  an invalid value is encountered, errno will be set to EINVAL and zero will be returned. If the number
       is out of range, errno is set to ERANGE and LLONG_MAX or LLONG_MIN is returned.

       • str: The string to convert.

       • endptr: Address of the first invalid character of str, or null.

       • base: The base to use for the conversion.

       The result of the conversion.

          int64_t
          bson_ascii_strtoll (const char *str, char **endptr, int base);