diff options
Diffstat (limited to 'math/math.h')
| -rw-r--r-- | math/math.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/math/math.h b/math/math.h index 42f32eef14..d95755f09a 100644 --- a/math/math.h +++ b/math/math.h @@ -83,7 +83,7 @@ __BEGIN_DECLS # undef _Mdouble_ # undef __MATH_PRECNAME -# if __STDC__ - 0 || __GNUC__ - 0 && !defined __NO_LONG_DOUBLE_MATH +# if (__STDC__ - 0 || __GNUC__ - 0) && !defined __NO_LONG_DOUBLE_MATH /* Include the file of declarations again, this time using `long double' instead of `double' and appending l to each function name. */ @@ -166,43 +166,68 @@ enum }; /* Return number of classification appropriate for X. */ +#ifdef __NO_LONG_DOUBLE_MATH +# define fpclassify(x) \ + (sizeof (x) == sizeof (float) ? __fpclassifyf (x) : __fpclassify (x)) +#else # define fpclassify(x) \ (sizeof (x) == sizeof (float) ? \ __fpclassifyf (x) \ : sizeof (x) == sizeof (double) ? \ __fpclassify (x) : __fpclassifyl (x)) +#endif /* Return nonzero value if sign of X is negative. */ +#ifdef __NO_LONG_DOUBLE_MATH +# define signbit(x) \ + (sizeof (x) == sizeof (float) ? __signbitf (x) : __signbit (x)) +#else # define signbit(x) \ (sizeof (x) == sizeof (float) ? \ __signbitf (x) \ : sizeof (x) == sizeof (double) ? \ __signbit (x) : __signbitl (x)) +#endif /* Return nonzero value if X is not +-Inf or NaN. */ +#ifdef __NO_LONG_DOUBLE_MATH +# define isfinite(x) \ + (sizeof (x) == sizeof (float) ? __finitef (x) : __finite (x)) +#else # define isfinite(x) \ (sizeof (x) == sizeof (float) ? \ __finitef (x) \ : sizeof (x) == sizeof (double) ? \ __finite (x) : __finitel (x)) +#endif /* Return nonzero value if X is neither zero, subnormal, Inf, nor NaN. */ # define isnormal(x) (fpclassify (x) == FP_NORMAL) /* Return nonzero value if X is a NaN. We could use `fpclassify' but we already have this functions `__isnan' and it is faster. */ +#ifdef __NO_LONG_DOUBLE_MATH +# define isnan(x) \ + (sizeof (x) == sizeof (float) ? __isnanf (x) : __isnan (x)) +#else # define isnan(x) \ (sizeof (x) == sizeof (float) ? \ __isnanf (x) \ : sizeof (x) == sizeof (double) ? \ __isnan (x) : __isnanl (x)) +#endif /* Return nonzero value is X is positive or negative infinity. */ +#ifdef __NO_LONG_DOUBLE_MATH +# define isinf(x) \ + (sizeof (x) == sizeof (float) ? __isinff (x) : __isinf (x)) +#else # define isinf(x) \ (sizeof (x) == sizeof (float) ? \ __isinff (x) \ : sizeof (x) == sizeof (double) ? \ __isinf (x) : __isinfl (x)) +#endif #endif /* Use ISO C 9X. */ |