Floating Point Parameters

#include <stdio.h>
#include <float.h>

int main()
{
    printf(
        "FLT_ROUNDS %d\n"
        "FLT_RADIX %d\n"
        "FLT_MANT_DIG %d\n"
        "DBL_MANT_DIG %d\n"
        "LDBL_MANT_DIG %d\n"
        "FLT_DIG %d\n"
        "DBL_DIG %d\n"
        "LDBL_DIG %d\n"
        "FLT_MIN_EXP %d\n"
        "DBL_MIN_EXP %d\n"
        "LDBL_MIN_EXP %d\n"
        "FLT_MIN_10_EXP %d\n"
        "DBL_MIN_10_EXP %d\n"
        "LDBL_MIN_10_EXP %d\n"
        "FLT_MAX_EXP %d\n"
        "DBL_MAX_EXP %d\n"
        "LDBL_MAX_EXP %d\n"
        "FLT_MAX_10_EXP %d\n"
        "DBL_MAX_10_EXP %d\n"
        "LDBL_MAX_10_EXP %d\n"
        "DBL_MAX %E\n"
        "LDBL_MAX %LE\n"
        "DBL_MIN %E\n"
        "LDBL_MIN %LE\n"
        "FLT_EPSILON %E\n"
        "DBL_EPSILON %E\n"
        "LDBL_EPSILON %LE\n"
        "FLT_MIN %E\n"
        "FLT_MAX %E\n",
        FLT_ROUNDS,
        FLT_RADIX,
        FLT_MANT_DIG,
        DBL_MANT_DIG,
        LDBL_MANT_DIG,
        FLT_DIG,
        DBL_DIG,
        LDBL_DIG,
        FLT_MIN_EXP,
        DBL_MIN_EXP,
        LDBL_MIN_EXP,
        FLT_MIN_10_EXP,
        DBL_MIN_10_EXP,
        LDBL_MIN_10_EXP,
        FLT_MAX_EXP,
        DBL_MAX_EXP,
        LDBL_MAX_EXP,
        FLT_MAX_10_EXP,
        DBL_MAX_10_EXP,
        LDBL_MAX_10_EXP,
        DBL_MAX,
        LDBL_MAX,
        DBL_MIN,
        LDBL_MIN,
        FLT_EPSILON,
        DBL_EPSILON,
        LDBL_EPSILON,
        FLT_MIN,
        FLT_MAX
        );

    return 0;
}


Contoh hasil dari program diatas:
FLT_ROUNDS 1
FLT_RADIX 2
FLT_MANT_DIG 24
DBL_MANT_DIG 53
LDBL_MANT_DIG 64
FLT_DIG 6
DBL_DIG 15
LDBL_DIG 18
FLT_MIN_EXP -125
DBL_MIN_EXP -1021
LDBL_MIN_EXP -16381
FLT_MIN_10_EXP -37
DBL_MIN_10_EXP -307
LDBL_MIN_10_EXP -4931
FLT_MAX_EXP 128
DBL_MAX_EXP 1024
LDBL_MAX_EXP 16384
FLT_MAX_10_EXP 38
DBL_MAX_10_EXP 308
LDBL_MAX_10_EXP 4932
DBL_MAX 1.797693E+308
LDBL_MAX 1.189731E+4932
DBL_MIN 2.225074E-308
LDBL_MIN 3.362103E-4932
FLT_EPSILON 1.192093E-07
DBL_EPSILON 2.220446E-16
LDBL_EPSILON 1.084202E-19
FLT_MIN 1.175494E-38
FLT_MAX 3.402823E+38

sumber: http://www.gnu.org/software/libc/manual/html_node/Floating-Point-Parameters.html#Floating-Point-Parameters