float.h File Reference

The macro yields the radix of all floating-point representations.

The rounding mode for floating-point addition is characterized by the implementation-defined value of FLT_ROUNDS

The use of evaluation formats is characterized by the implementation-defined value of FLT_EVAL_METHOD

Number of decimal digits, n, such that any floating-point number in the widest supported floating type with pmax radix b digits can be rounded to a floating-point number with n decimal digits and back again without change to the value.

Number of base-FLT_RADIX digits in the floating-point significand

The difference between 1 and the least value greater than 1 that is representable in the given floating-point type

Number of decimal digits, q, such that any floating-point number with q decimal digits can be rounded into a floating-point number with p radix b digits and back again without change to the q decimal digits.

Minimum negative integer such that FLT_RADIX raised to that power minus 1 is a normalized floating-point number

Minimum normalized positive floating-point number

Minimum negative integer such that 10 raised to that power is in the range of normalized floating-point numbers.

Maximum integer such that FLT_RADIX raised to that power minus 1 is a representable finite floating-point number, emax

Maximum representable finite floating-point number.

Maximum integer such that 10 raised to that power is in the range of representable finite floating-point numbers.

Number of base-FLT_RADIX digits in the floating-point significand

The difference between 1 and the least value greater than 1 that is representable in the given floating-point type

Number of decimal digits, q, such that any floating-point number with q decimal digits can be rounded into a floating-point number with p radix b digits and back again without change to the q decimal digits.

Minimum negative integer such that FLT_RADIX raised to that power minus 1 is a normalized floating-point number

Minimum normalized positive floating-point number

Minimum negative integer such that 10 raised to that power is in the range of normalized floating-point numbers.

Maximum integer such that FLT_RADIX raised to that power minus 1 is a representable finite floating-point number, emax

Maximum representable finite floating-point number.

Maximum integer such that 10 raised to that power is in the range of representable finite floating-point numbers.

Number of base-FLT_RADIX digits in the floating-point significand

The difference between 1 and the least value greater than 1 that is representable in the given floating-point type

Number of decimal digits, q, such that any floating-point number with q decimal digits can be rounded into a floating-point number with p radix b digits and back again without change to the q decimal digits.

Minimum negative integer such that FLT_RADIX raised to that power minus 1 is a normalized floating-point number

Minimum normalized positive floating-point number

Minimum negative integer such that 10 raised to that power is in the range of normalized floating-point numbers.

Maximum integer such that FLT_RADIX raised to that power minus 1 is a representable finite floating-point number, emax

Maximum representable finite floating-point number.

Maximum integer such that 10 raised to that power is in the range of representable finite floating-point numbers.