diff options
Diffstat (limited to 'math/math.h')
| -rw-r--r-- | math/math.h | 125 |
1 files changed, 40 insertions, 85 deletions
diff --git a/math/math.h b/math/math.h index 70d9b864e8..75ccfc3bed 100644 --- a/math/math.h +++ b/math/math.h @@ -199,6 +199,27 @@ extern int signgam; #endif +/* Depending on the type of TG_ARG, call an appropriately suffixed + version of FUNC with arguments (including parentheses) ARGS. + Suffixed functions may not exist for long double if it has the same + format as double, or for other types with the same format as float, + double or long double. The behavior is undefined if the argument + does not have a real floating type. The definition may use a + conditional expression, so all suffixed versions of FUNC must + return the same type (FUNC may include a cast if necessary rather + than being a single identifier). */ +#ifdef __NO_LONG_DOUBLE_MATH +# define __MATH_TG(TG_ARG, FUNC, ARGS) \ + (sizeof (TG_ARG) == sizeof (float) ? FUNC ## f ARGS : FUNC ARGS) +#else +# define __MATH_TG(TG_ARG, FUNC, ARGS) \ + (sizeof (TG_ARG) == sizeof (float) \ + ? FUNC ## f ARGS \ + : sizeof (TG_ARG) == sizeof (double) \ + ? FUNC ARGS \ + : FUNC ## l ARGS) +#endif + /* ISO C99 defines some generic macros which work on any data type. */ #ifdef __USE_ISOC99 @@ -231,49 +252,22 @@ enum && !defined __OPTIMIZE_SIZE__ # define fpclassify(x) __builtin_fpclassify (FP_NAN, FP_INFINITE, \ FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x) -# elif defined __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)) +# define fpclassify(x) __MATH_TG ((x), __fpclassify, (x)) # endif /* Return nonzero value if sign of X is negative. */ # if __GNUC_PREREQ (4,0) -# define signbit(x) \ - (sizeof (x) == sizeof (float) \ - ? __builtin_signbitf (x) \ - : sizeof (x) == sizeof (double) \ - ? __builtin_signbit (x) : __builtin_signbitl (x)) +# define signbit(x) __MATH_TG ((x), __builtin_signbit, (x)) # else -# 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 +# define signbit(x) __MATH_TG ((x), __signbit, (x)) # endif /* Return nonzero value if X is not +-Inf or NaN. */ # if __GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__ # define isfinite(x) __builtin_isfinite (x) -# elif defined __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)) +# define isfinite(x) __MATH_TG ((x), __finite, (x)) # endif /* Return nonzero value if X is neither zero, subnormal, Inf, nor NaN. */ @@ -287,29 +281,15 @@ enum we already have this functions `__isnan' and it is faster. */ # if __GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__ # define isnan(x) __builtin_isnan (x) -# elif defined __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)) +# define isnan(x) __MATH_TG ((x), __isnan, (x)) # endif /* Return nonzero value if X is positive or negative infinity. */ # if __GNUC_PREREQ (4,4) && !defined __SUPPORT_SNAN__ # define isinf(x) __builtin_isinf_sign (x) -# elif defined __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)) +# define isinf(x) __MATH_TG ((x), __isinf, (x)) # endif /* Bitmasks for the math_errhandling macro. */ @@ -329,16 +309,7 @@ enum # include <bits/iscanonical.h> /* Return nonzero value if X is a signaling NaN. */ -# ifdef __NO_LONG_DOUBLE_MATH -# define issignaling(x) \ - (sizeof (x) == sizeof (float) ? __issignalingf (x) : __issignaling (x)) -# else -# define issignaling(x) \ - (sizeof (x) == sizeof (float) \ - ? __issignalingf (x) \ - : sizeof (x) == sizeof (double) \ - ? __issignaling (x) : __issignalingl (x)) -# endif +# define issignaling(x) __MATH_TG ((x), __issignaling, (x)) /* Return nonzero value if X is subnormal. */ # define issubnormal(x) (fpclassify (x) == FP_SUBNORMAL) @@ -555,36 +526,20 @@ extern int matherr (struct exception *__exc); #endif #if __GLIBC_USE (IEC_60559_BFP_EXT) -/* Return X == Y but raising "invalid" and setting errno if X or Y is - a NaN. */ -# ifdef __NO_LONG_DOUBLE_MATH -# if (__FLT_EVAL_METHOD__ == 1 \ - || __FLT_EVAL_METHOD__ == 2 \ - || __FLT_EVAL_METHOD__ > 32) -# define iseqsig(x, y) __iseqsig ((x), (y)) -# else -# define iseqsig(x, y) \ - (sizeof ((x) + (y)) == sizeof (float) \ - ? __iseqsigf ((x), (y)) \ - : __iseqsig ((x), (y))) -# endif +/* An expression whose type has the widest of the evaluation formats + of X and Y (which are of floating-point types). */ +# if __FLT_EVAL_METHOD__ == 2 || __FLT_EVAL_METHOD__ > 64 +# define __MATH_EVAL_FMT2(x, y) ((x) + (y) + 0.0L) +# elif __FLT_EVAL_METHOD__ == 1 || __FLT_EVAL_METHOD__ > 32 +# define __MATH_EVAL_FMT2(x, y) ((x) + (y) + 0.0) # else -# if __FLT_EVAL_METHOD__ == 2 || __FLT_EVAL_METHOD__ > 64 -# define iseqsig(x, y) __iseqsigl ((x), (y)) -# elif __FLT_EVAL_METHOD__ == 1 || __FLT_EVAL_METHOD__ > 32 -# define iseqsig(x, y) \ - (sizeof ((x) + (y)) <= sizeof (double) \ - ? __iseqsig ((x), (y)) \ - : __iseqsigl ((x), (y))) -# else -# define iseqsig(x, y) \ - (sizeof ((x) + (y)) == sizeof (float) \ - ? __iseqsigf ((x), (y)) \ - : sizeof ((x) + (y)) == sizeof (double) \ - ? __iseqsig ((x), (y)) \ - : __iseqsigl ((x), (y))) -# endif +# define __MATH_EVAL_FMT2(x, y) ((x) + (y)) # endif + +/* Return X == Y but raising "invalid" and setting errno if X or Y is + a NaN. */ +# define iseqsig(x, y) \ + __MATH_TG (__MATH_EVAL_FMT2 (x, y), __iseqsig, ((x), (y))) #endif __END_DECLS |