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Diffstat (limited to 'sysdeps/generic/math-narrow-alias.h')
| -rw-r--r-- | sysdeps/generic/math-narrow-alias.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/sysdeps/generic/math-narrow-alias.h b/sysdeps/generic/math-narrow-alias.h new file mode 100644 index 0000000000..44c4ab6f06 --- /dev/null +++ b/sysdeps/generic/math-narrow-alias.h @@ -0,0 +1,135 @@ +/* Alias macros for functions returning a narrower type. + Copyright (C) 2018-2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef _MATH_NARROW_ALIAS_H +#define _MATH_NARROW_ALIAS_H 1 + +#include <bits/floatn.h> +#include <bits/long-double.h> + +/* The following macros declare aliases for a narrowing function. The + sole argument is the base name of a family of functions, such as + "add". If any platform changes long double format after the + introduction of narrowing functions, in a way requiring symbol + versioning compatibility, additional variants of these macros will + be needed. */ + +#define libm_alias_float_double_main(func) \ + weak_alias (__f ## func, f ## func) \ + weak_alias (__f ## func, f32 ## func ## f64) \ + weak_alias (__f ## func, f32 ## func ## f32x) + +#ifdef NO_LONG_DOUBLE +# define libm_alias_float_double(func) \ + libm_alias_float_double_main (func) \ + weak_alias (__f ## func, f ## func ## l) +#else +# define libm_alias_float_double(func) \ + libm_alias_float_double_main (func) +#endif + +#define libm_alias_float32x_float64_main(func) \ + weak_alias (__f32x ## func ## f64, f32x ## func ## f64) + +#ifdef NO_LONG_DOUBLE +# define libm_alias_float32x_float64(func) \ + libm_alias_float32x_float64_main (func) \ + weak_alias (__f32x ## func ## f64, d ## func ## l) +#elif defined __LONG_DOUBLE_MATH_OPTIONAL +# define libm_alias_float32x_float64(func) \ + libm_alias_float32x_float64_main (func) \ + weak_alias (__f32x ## func ## f64, __nldbl_d ## func ## l) +#else +# define libm_alias_float32x_float64(func) \ + libm_alias_float32x_float64_main (func) +#endif + +#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128 +# define libm_alias_float_ldouble_f128(func) \ + weak_alias (__f ## func ## l, f32 ## func ## f128) +# define libm_alias_double_ldouble_f128(func) \ + weak_alias (__d ## func ## l, f32x ## func ## f128) \ + weak_alias (__d ## func ## l, f64 ## func ## f128) +#else +# define libm_alias_float_ldouble_f128(func) +# define libm_alias_double_ldouble_f128(func) +#endif + +#if __HAVE_FLOAT64X_LONG_DOUBLE +# define libm_alias_float_ldouble_f64x(func) \ + weak_alias (__f ## func ## l, f32 ## func ## f64x) +# define libm_alias_double_ldouble_f64x(func) \ + weak_alias (__d ## func ## l, f32x ## func ## f64x) \ + weak_alias (__d ## func ## l, f64 ## func ## f64x) +#else +# define libm_alias_float_ldouble_f64x(func) +# define libm_alias_double_ldouble_f64x(func) +#endif + +#define libm_alias_float_ldouble(func) \ + weak_alias (__f ## func ## l, f ## func ## l) \ + libm_alias_float_ldouble_f128 (func) \ + libm_alias_float_ldouble_f64x (func) + +#define libm_alias_double_ldouble(func) \ + weak_alias (__d ## func ## l, d ## func ## l) \ + libm_alias_double_ldouble_f128 (func) \ + libm_alias_double_ldouble_f64x (func) + +#define libm_alias_float64x_float128(func) \ + weak_alias (__f64x ## func ## f128, f64x ## func ## f128) + +#define libm_alias_float32_float128_main(func) \ + weak_alias (__f32 ## func ## f128, f32 ## func ## f128) + +#define libm_alias_float64_float128_main(func) \ + weak_alias (__f64 ## func ## f128, f64 ## func ## f128) \ + weak_alias (__f64 ## func ## f128, f32x ## func ## f128) + +#include <math-narrow-alias-float128.h> + +/* The following macros declare narrowing-named aliases for a + non-narrowing function. */ + +#define libm_alias_double_narrow_main(from, to) \ + weak_alias (from, f32x ## to ## f64) + +#ifdef NO_LONG_DOUBLE +# define libm_alias_double_narrow(from, to) \ + libm_alias_double_narrow_main (from, to) \ + weak_alias (from, d ## to ## l) +#else +# define libm_alias_double_narrow(from, to) \ + libm_alias_double_narrow_main (from, to) +#endif + +#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128 +# define libm_alias_ldouble_narrow(from, to) \ + weak_alias (from ## l, f64x ## to ## f128) +#else +# define libm_alias_ldouble_narrow(from, to) +#endif + +#if __HAVE_DISTINCT_FLOAT128 && __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE +# define libm_alias_float128_narrow(from, to) \ + weak_alias (from ## f128, f64x ## to ## f128) +#else +# define libm_alias_float128_narrow(from, to) +#endif + +#endif /* math-narrow-alias.h. */ |