BSON Float test

bson_float_test.c

/// cc -o bson_float_test bson_float_test.c  -lbson-1.0.0                                                                                    

#include <stdio.h>
#include <libbson-1.0/bson.h>

int main(int argc, const char* argv[])
{
    bson_t b;
    bson_init(&b);

    double dvalue = 0.01;
    printf("double: %0.20f\n", dvalue);
    bson_append_double(&b, "double", -1, dvalue);

    float fvalue = 0.01f;
    printf("float:  %0.20f\n", fvalue);
    bson_append_double(&b, "float_cast", -1, (double)fvalue);

    char* json = bson_as_json(&b, NULL);
    printf("%s\n", json);
    bson_free(json);

    return 0;
}

Result:

$ ./bson_float_test

double: 0.01000000000000000021

float:  0.00999999977648258209

{ "double" : 0.010000000000000000208, "float_cast" : 0.0099999997764825820923 }