Various platform-dependent floating point constants proposed by ANSI
This header file contains a set of various platform-dependent constants related to floating point values. These constants are proposed by ANSI C. They allow making more portable programs.
See also: values.h
| #define DBL_DIG 16 |
Number of significant digits in a floating point number.
| #define DBL_EPSILON (1e-15) |
The smallest x for which 1.0+x != 1.0.
| #define DBL_MANT_BITS 64 |
Number of bits used for the mantissa.
| #define DBL_MANT_DIG 16 |
Number of FLT_RADIX digits in the mantissa.
| #define DBL_MAX_10_EXP 999 |
The maximal exponent of a floating point value expressed in base 10 (see notes about FLT_MAX_EXP).
| #define DBL_MAX_2_EXP 3321 |
The maximal exponent of a floating point value expressed in base 2 (see notes about FLT_MAX_EXP).
| #define DBL_MAX_EXP 999 |
The maximal exponent of a floating point value expressed in base FLT_RADIX; greater exponents are principally possible (up to 16383), but not supported in all math functions.
| #define DBL_MAX (9.999999999999999e999) |
The maximal floating point value (see notes about FLT_MAX_EXP).
| #define DBL_MIN_10_EXP (-999) |
The minimal exponent of a floating point value expressed in base 10 (see notes about FLT_MIN_EXP).
| #define DBL_MIN_2_EXP (-3318) |
The minimal exponent of a floating point value expressed in base 2 (see notes about FLT_MIN_EXP).
| #define DBL_MIN_EXP (-999) |
The maximal exponent of a floating point value expressed in base FLT_RADIX; smaller exponents are principally possible (up to -16383), but not supported in all math functions.
| #define DBL_MIN (1e-999) |
The minimal floating point value (see notes about FLT_MIN_EXP).
| #define FLT_DIG 16 |
Number of significant digits in a floating point number.
| #define FLT_EPSILON (1e-15) |
The smallest x for which 1.0+x != 1.0.
| #define FLT_MANT_BITS 64 |
Number of bits used for the mantissa.
| #define FLT_MANT_DIG 16 |
Number of FLT_RADIX digits in the mantissa.
| #define FLT_MAX_10_EXP 999 |
The maximal exponent of a floating point value expressed in base 10 (see notes about FLT_MAX_EXP).
| #define FLT_MAX_2_EXP 3321 |
The maximal exponent of a floating point value expressed in base 2 (see notes about FLT_MAX_EXP).
| #define FLT_MAX_EXP 999 |
The maximal exponent of a floating point value expressed in base FLT_RADIX; greater exponents are principally possible (up to 16383), but not supported in all math functions.
| #define FLT_MAX (9.999999999999999e999) |
The maximal floating point value (see notes about FLT_MAX_EXP).
| #define FLT_MIN_10_EXP (-999) |
The minimal exponent of a floating point value expressed in base 10 (see notes about FLT_MIN_EXP).
| #define FLT_MIN_2_EXP (-3318) |
The minimal exponent of a floating point value expressed in base 2 (see notes about FLT_MIN_EXP).
| #define FLT_MIN_EXP (-999) |
The minimal exponent of a floating point value expressed in base FLT_RADIX; smaller exponents are principally possible (up to -16383), but not supported in all math functions.
| #define FLT_MIN (1e-999) |
The minimal floating point value (see notes about FLT_MIN_EXP).
| #define FLT_NORMALIZE 1 |
Indicates that floating point numbers should always be normalized.
| #define FLT_RADIX 10 |
The base used for representing the exponent.
| #define FLT_ROUNDS 1 |
Option for rounding floating point numbers during the addition.
| #define LDBL_DIG 16 |
Number of significant digits in a floating point number.
| #define LDBL_EPSILON (1e-15) |
The smallest x for which 1.0+x != 1.0.
| #define LDBL_MANT_BITS 64 |
Number of bits used for the mantissa.
| #define LDBL_MANT_DIG 16 |
Number of FLT_RADIX digits in the mantissa.
| #define LDBL_MAX_10_EXP 999 |
The maximal exponent of a floating point value expressed in base 10 (see notes about FLT_MAX_EXP).
| #define LDBL_MAX_2_EXP 3321 |
The maximal exponent of a floating point value expressed in base 2 (see notes about FLT_MAX_EXP).
| #define LDBL_MAX_EXP 999 |
The maximal exponent of a floating point value expressed in base FLT_RADIX; greater exponents are principally possible (up to 16383), but not supported in all math functions.
| #define LDBL_MAX (9.999999999999999e999) |
The maximal floating point value (see notes about FLT_MAX_EXP).
| #define LDBL_MIN_10_EXP (-999) |
The minimal exponent of a floating point value expressed in base 10 (see notes about FLT_MIN_EXP).
| #define LDBL_MIN_2_EXP (-3318) |
The minimal exponent of a floating point value expressed in base 2 (see notes about FLT_MIN_EXP).
| #define LDBL_MIN_EXP (-999) |
The maximal exponent of a floating point value expressed in base FLT_RADIX; smaller exponents are principally possible (up to -16383), but not supported in all math functions.
| #define LDBL_MIN (1e-999) |
The minimal floating point value (see notes about FLT_MIN_EXP).