# Floating Limits

Microsoft Specific

The following table lists the limits on the values of floating-point constants. These limits are also defined in the standard header file <float.h>.

## Limits on Floating-Point Constants

Constant Meaning Value
FLT_DIG
DBL_DIG
LDBL_DIG
Number of digits, q, such that a floating-point number with q decimal digits can be rounded into a floating-point representation and back without loss of precision. 6
15
15
FLT_EPSILON
DBL_EPSILON
LDBL_EPSILON
Smallest positive number x, such that x + 1.0 is not equal to 1.0. 1.192092896e-07F
2.2204460492503131e-016
2.2204460492503131e-016
FLT_GUARD 0
FLT_MANT_DIG
DBL_MANT_DIG
LDBL_MANT_DIG
Number of digits in the radix specified by FLT_RADIX in the floating-point significand. The radix is 2; hence these values specify bits. 24
53
53
FLT_MAX
DBL_MAX
LDBL_MAX
Maximum representable floating-point number. 3.402823466e+38F
1.7976931348623158e+308
1.7976931348623158e+308
FLT_MAX_10_EXP
DBL_MAX_10_EXP
LDBL_MAX_10_EXP
Maximum integer such that 10 raised to that number is a representable floating-point number. 38
308
308
FLT_MAX_EXP
DBL_MAX_EXP
LDBL_MAX_EXP
Maximum integer such that FLT_RADIX raised to that number is a representable floating- point number. 128
1024
1024
FLT_MIN
DBL_MIN
LDBL_MIN
Minimum positive value. 1.175494351e-38F
2.2250738585072014e-308
2.2250738585072014e-308
FLT_MIN_10_EXP
DBL_MIN_10_EXP
LDBL_MIN_10_EXP
Minimum negative integer such that 10 raised to that number is a representable floating- point number. -37
-307
-307
FLT_MIN_EXP
DBL_MIN_EXP
LDBL_MIN_EXP
Minimum negative integer such that FLT_RADIX raised to that number is a representable floating-point number. -125
-1021
-1021
FLT_NORMALIZE 0
Radix of exponent representation. 2
2
2
FLT_ROUNDS
_DBL_ROUNDS
_LDBL_ROUNDS
Rounding mode for floating-point addition. 1 (near)
1 (near)
1 (near)

Note

The information in the table may differ in future versions of the product.

END Microsoft Specific