diff options
Diffstat (limited to 'math/math.h')
| -rw-r--r-- | math/math.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/math/math.h b/math/math.h index bf3ef9bcee..5229a020e0 100644 --- a/math/math.h +++ b/math/math.h @@ -300,17 +300,20 @@ extern int matherr __P ((struct exception *)); #define M_SQRT2 _Mldbl(1.41421356237309504880) /* sqrt(2) */ #define M_SQRT1_2 _Mldbl(0.70710678118654752440) /* 1/sqrt(2) */ +#endif + /* Our constants might specify more precision than `double' can represent. Use `long double' constants in standard and GNU C, where they are - supported and the cast to `double'. */ + supported and the cast to `double'. + + Please not we define the macro even if the constants are not defined. + This helps us to use the macros in other places. */ #if __STDC__ - 0 || __GNUC__ - 0 #define _Mldbl(x) x##L #else /* Traditional C. */ #define _Mldbl(x) x #endif /* Standard or GNU C. */ -#endif - /* Get machine-dependent inline versions (if there are any). */ #if (!defined __NO_MATH_INLINES && defined __OPTIMIZE__) \ |