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DECIMAL_DIG is not the same as LDBL_DIG type_DIG is the maximimum number of decimal digits that can survive a round trip from decimal to type and back to decimal. DECIMAL_DIG is the minimum number of decimal digits required in order for any floating point type to survive the round trip to decimal and back, and it is generally larger than LDBL_DIG. since the exact formula is non-trivial, and defining it larger than necessary may be legal but wasteful, just define the right value in bits/float.h.
33 lines
618 B
C
33 lines
618 B
C
#ifndef _FLOAT_H
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#define _FLOAT_H
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#define FLT_RADIX 2
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#define FLT_MIN 1.17549435e-38F
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#define FLT_MAX 3.40282347e+38F
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#define FLT_EPSILON 1.19209290e-07F
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#define FLT_MANT_DIG 24
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#define FLT_MIN_EXP (-125)
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#define FLT_MAX_EXP 128
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#define FLT_DIG 6
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#define FLT_MIN_10_EXP (-37)
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#define FLT_MAX_10_EXP 38
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#define DBL_MIN 2.2250738585072014e-308
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#define DBL_MAX 1.7976931348623157e+308
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#define DBL_EPSILON 2.2204460492503131e-16
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#define DBL_MANT_DIG 53
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#define DBL_MIN_EXP (-1021)
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#define DBL_MAX_EXP 1024
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#define DBL_DIG 15
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#define DBL_MIN_10_EXP (-307)
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#define DBL_MAX_10_EXP 308
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#include <bits/float.h>
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#endif
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