SYNOPSIS

          #include <bson/bson.h>

          #define BSON_DECIMAL128_STRING 43
          #define BSON_DECIMAL128_INF "Infinity"
          #define BSON_DECIMAL128_NAN "NaN"

          typedef struct {
          #if BSON_BYTE_ORDER == BSON_LITTLE_ENDIAN
             uint64_t low;
             uint64_t high;
          #elif BSON_BYTE_ORDER == BSON_BIG_ENDIAN
             uint64_t high;
             uint64_t low;
          #endif
          } bson_decimal128_t;

DESCRIPTION

       The   bson_decimal128_t   <>   structure   represents   the  IEEE-754  Decimal128  data  type.  The  type
       bson_decimal128_t is an aggregate that contains two uint64_ts, named high and low.  The  declaration  and
       layout  order between them depends on the endian order of the target platform: low will always correspond
       to the low-order bits of the Decimal128 object, while  high  corresponds  to  the  high-order  bits.  The
       bson_decimal128_t always has a size of sixteen (16), and can be bit-cast to/from a _Decimal128.

EXAMPLE

          #include <bson/bson.h>
          #include <stdio.h>

          int
          main (int argc, char *argv[])
          {
             char string[BSON_DECIMAL128_STRING];
             bson_decimal128_t decimal128;

             bson_decimal128_from_string ("100.00", &decimal128);
             bson_decimal128_to_string (&decimal128, string);
             printf ("Decimal128 value: %s\n", string);

             return 0;
          }

Author

       MongoDB, Inc

Copyright

       2009-present, MongoDB, Inc.

2.2.1                                             Dec 11, 2025                              BSON_DECIMAL128_T(3)