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| author | Rich Felker <dalias@aerifal.cx> | 2013-11-20 17:40:33 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2013-11-20 17:40:33 -0500 |
| commit | 46db37289f917e23877a0e0df88cbb150805bc97 (patch) | |
| tree | e39e35854721b6912e3484207aeba5991dbc9ed6 | |
| parent | d8e8f1464cb02d6a62f01c7153ca4d7b0cd5c5e6 (diff) | |
| download | musl-46db37289f917e23877a0e0df88cbb150805bc97.tar.gz | |
write floating point limit constants to 21 significant decimal places
this is enough to produce the correct value even if the constant is
interpreted as 80-bit extended precision, which matters on archs with
excess precision (FLT_EVAL_METHOD==2) under at least some
interpretations of the C standard. the shorter representations, while
correct if converted to the nominal precision at translation time,
could produce an incorrect value at extended precision, yielding
results such as (double)DBL_MAX != DBL_MAX.
| -rw-r--r-- | include/float.h | 16 | ||||
| -rw-r--r-- | include/math.h | 4 |
2 files changed, 10 insertions, 10 deletions
diff --git a/include/float.h b/include/float.h index c7b208af..2b2ad399 100644 --- a/include/float.h +++ b/include/float.h @@ -3,10 +3,10 @@ #define FLT_RADIX 2 -#define FLT_TRUE_MIN 1.40129846e-45F -#define FLT_MIN 1.17549435e-38F -#define FLT_MAX 3.40282347e+38F -#define FLT_EPSILON 1.19209290e-07F +#define FLT_TRUE_MIN 1.40129846432481707092e-45F +#define FLT_MIN 1.17549435082228750797e-38F +#define FLT_MAX 3.40282346638528859812e+38F +#define FLT_EPSILON 1.1920928955078125e-07F #define FLT_MANT_DIG 24 #define FLT_MIN_EXP (-125) @@ -16,10 +16,10 @@ #define FLT_MIN_10_EXP (-37) #define FLT_MAX_10_EXP 38 -#define DBL_TRUE_MIN 4.9406564584124654e-324 -#define DBL_MIN 2.2250738585072014e-308 -#define DBL_MAX 1.7976931348623157e+308 -#define DBL_EPSILON 2.2204460492503131e-16 +#define DBL_TRUE_MIN 4.94065645841246544177e-324 +#define DBL_MIN 2.22507385850720138309e-308 +#define DBL_MAX 1.79769313486231570815e+308 +#define DBL_EPSILON 2.22044604925031308085e-16 #define DBL_MANT_DIG 53 #define DBL_MIN_EXP (-1021) diff --git a/include/math.h b/include/math.h index dc176012..3c2105ef 100644 --- a/include/math.h +++ b/include/math.h @@ -349,7 +349,7 @@ long double truncl(long double); #if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE) #undef MAXFLOAT -#define MAXFLOAT 3.40282347e+38F +#define MAXFLOAT 3.40282346638528859812e+38F #endif #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) @@ -379,7 +379,7 @@ double yn(int, double); #endif #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) -#define HUGE 3.40282347e+38F +#define HUGE 3.40282346638528859812e+38F double scalb(double, double); float scalbf(float, float); |