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-rw-r--r--math/math.h27
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. */