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Constant
(macro)
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FLT_RADIX
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2
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Indicates the radix in exponent representation.
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FLT_ROUNDS
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1
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Indicates whether or not the results of addition are rounded off.
1 means that rounding of the results of operation is enabled.
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FLT_MAX
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3.4028235677973364e+38F
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Indicates the maximum value that can be represented as a float type floating-point value.
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DBL_MAX
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1.7976931348623158e+308
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Indicates the maximum value that can be represented as a double type floating-point value.
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LDBL_MAX
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1.7976931348623158e+308
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Indicates the maximum value that can be represented as a long double type floating-point value.
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FLT_MAX_EXP
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128
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Using powers of the radix two to represent the range of float type floating-point numbers, FLT_MAX_EXP indicates the maximum value of the exponent plus 1.
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DBL_MAX_EXP
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1024
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Using powers of the radix two to represent the range of double type floating-point numbers, DBL_MAX_EXP indicates the maximum value of the exponent plus 1.
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LDBL_MAX_EXP
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1024
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Using powers of the radix two to represent the range of long double type floating-point numbers, LDBL_MAX_EXP indicates the maximum value of the exponent plus 1.
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FLT_MAX_10_EXP
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38
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Using powers of 10 to represent the range of float type floating point positive numbers, FLT_MAX_10_EXP indicates the exponent of the maximum integer.
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DBL_MAX_10_EXP
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308
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Using powers of 10 to represent the range of double type floating point positive numbers, DBL_MAX_10_EXP indicates the exponent of the maximum integer.
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LDBL_MAX_10_EXP
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308
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Using powers of 10 to represent the range of long double type floating point positive numbers, LDBL_MAX_10_EXP indicates the exponent of the maximum integer.
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FLT_MIN
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1.175494351e−38F
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Indicates the minimum positive value that can be represented as a float type floating-point value.
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DBL_MIN
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2.2250738585072014e−308
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Indicates the minimum positive value that can be represented as a double type floating-point value.
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LDBL_MIN
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2.2250738585072014e−308
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Indicates the minimum positive value that can be represented as a long double type floating-point value.
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Constant
(macro)
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FLT_MIN_EXP
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−125
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Using powers of the radix two to represent the range of float type floating-point numbers, FLT_MIN_EXP indicates the minimum value of the exponent plus 1.
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DBL_MIN_EXP
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−1021
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Using powers of the radix two to represent the range of double type floating-point numbers, DBL_MIN_EXP indicates the minimum value of the exponent plus 1.
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LDBL_MIN_EXP
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−1021
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Using powers of the radix two to represent the range of long double type floating-point numbers, LDBL_MIN_EXP indicates the minimum value of the exponent plus 1.
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FLT_MIN_10_EXP
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−37
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Using powers of 10 to represent the range of float type floating point positive numbers, FLT_MIN_10_EXP indicates the exponent of the minimum integer.
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DBL_MIN_10_EXP
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−307
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Using powers of 10 to represent the range of double type floating point positive numbers, DBL_MIN_10_EXP indicates the exponent of the minimum integer.
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LDBL_MIN_10_EXP
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−307
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Using powers of 10 to represent the range of long double type floating point positive numbers, LDBL_MIN_10_EXP indicates the exponent of the minimum integer.
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FLT_DIG
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6
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Indicates the maximum number of digits in float type floating-point value decimal-precision.
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DBL_DIG
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15
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Indicates the maximum number of digits in double type floating-point value decimal-precision.
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LDBL_DIG
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15
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Indicates the maximum number of digits in long double type floating-point value decimal-precision.
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FLT_MANT_DIG
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24
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Indicates the maximum number of mantissa digits when a float type floating-point value is represented in the radix.
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DBL_MANT_DIG
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53
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Indicates the maximum number of mantissa digits when a double type floating-point value is represented in the radix.
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LDBL_MANT_DIG
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53
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Indicates the maximum number of mantissa digits when a long double type floating-point value is represented in the radix.
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DECIMAL_DIG
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17
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Indicates the maximum number of digits of a floating-point value represented in decimal precision.
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FLT_EPSILON
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1.1920928955078125e-07
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Indicates the difference between 1 and the minimum value greater than 1 that can be represented in float type.
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Constant
(macro)
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DBL_EPSILON
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2.2204460492503131e-16
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Indicates the difference between 1 and the minimum value greater than 1 that can be represented in double type.
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LDBL_EPSILON
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2.2204460492503131e-16
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Indicates the difference between 1 and the minimum value greater than 1 that can be represented in long double type.
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