| title | ms.custom | ms.date | ms.reviewer | ms.suite | ms.technology | ms.tgt_pltfrm | ms.topic | dev_langs | helpviewer_keywords | ms.assetid | caps.latest.revision | author | ms.author | manager | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Floating Limits | Microsoft Docs |
11/04/2016 |
|
language-reference |
|
|
fc718652-1f4c-4ed8-af60-0e769637459c |
7 |
mikeblome |
mblome |
ghogen |
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.
| 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 | |
| FLT_RADIX _DBL_RADIX _LDBL_RADIX | 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