mirror of git://sourceware.org/git/glibc.git
136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
/* Alias macros for functions returning a narrower type.
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Copyright (C) 2018-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _MATH_NARROW_ALIAS_H
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#define _MATH_NARROW_ALIAS_H 1
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#include <bits/floatn.h>
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#include <bits/long-double.h>
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/* The following macros declare aliases for a narrowing function. The
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sole argument is the base name of a family of functions, such as
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"add". If any platform changes long double format after the
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introduction of narrowing functions, in a way requiring symbol
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versioning compatibility, additional variants of these macros will
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be needed. */
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#define libm_alias_float_double_main(func) \
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weak_alias (__f ## func, f ## func) \
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weak_alias (__f ## func, f32 ## func ## f64) \
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weak_alias (__f ## func, f32 ## func ## f32x)
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#ifdef NO_LONG_DOUBLE
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# define libm_alias_float_double(func) \
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libm_alias_float_double_main (func) \
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weak_alias (__f ## func, f ## func ## l)
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#else
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# define libm_alias_float_double(func) \
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libm_alias_float_double_main (func)
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#endif
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#define libm_alias_float32x_float64_main(func) \
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weak_alias (__f32x ## func ## f64, f32x ## func ## f64)
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#ifdef NO_LONG_DOUBLE
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# define libm_alias_float32x_float64(func) \
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libm_alias_float32x_float64_main (func) \
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weak_alias (__f32x ## func ## f64, d ## func ## l)
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#elif defined __LONG_DOUBLE_MATH_OPTIONAL
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# define libm_alias_float32x_float64(func) \
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libm_alias_float32x_float64_main (func) \
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weak_alias (__f32x ## func ## f64, __nldbl_d ## func ## l)
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#else
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# define libm_alias_float32x_float64(func) \
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libm_alias_float32x_float64_main (func)
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#endif
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#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
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# define libm_alias_float_ldouble_f128(func) \
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weak_alias (__f ## func ## l, f32 ## func ## f128)
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# define libm_alias_double_ldouble_f128(func) \
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weak_alias (__d ## func ## l, f32x ## func ## f128) \
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weak_alias (__d ## func ## l, f64 ## func ## f128)
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#else
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# define libm_alias_float_ldouble_f128(func)
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# define libm_alias_double_ldouble_f128(func)
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#endif
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#if __HAVE_FLOAT64X_LONG_DOUBLE
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# define libm_alias_float_ldouble_f64x(func) \
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weak_alias (__f ## func ## l, f32 ## func ## f64x)
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# define libm_alias_double_ldouble_f64x(func) \
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weak_alias (__d ## func ## l, f32x ## func ## f64x) \
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weak_alias (__d ## func ## l, f64 ## func ## f64x)
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#else
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# define libm_alias_float_ldouble_f64x(func)
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# define libm_alias_double_ldouble_f64x(func)
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#endif
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#define libm_alias_float_ldouble(func) \
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weak_alias (__f ## func ## l, f ## func ## l) \
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libm_alias_float_ldouble_f128 (func) \
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libm_alias_float_ldouble_f64x (func)
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#define libm_alias_double_ldouble(func) \
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weak_alias (__d ## func ## l, d ## func ## l) \
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libm_alias_double_ldouble_f128 (func) \
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libm_alias_double_ldouble_f64x (func)
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#define libm_alias_float64x_float128(func) \
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weak_alias (__f64x ## func ## f128, f64x ## func ## f128)
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#define libm_alias_float32_float128_main(func) \
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weak_alias (__f32 ## func ## f128, f32 ## func ## f128)
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#define libm_alias_float64_float128_main(func) \
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weak_alias (__f64 ## func ## f128, f64 ## func ## f128) \
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weak_alias (__f64 ## func ## f128, f32x ## func ## f128)
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#include <math-narrow-alias-float128.h>
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/* The following macros declare narrowing-named aliases for a
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non-narrowing function. */
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#define libm_alias_double_narrow_main(from, to) \
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weak_alias (from, f32x ## to ## f64)
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#ifdef NO_LONG_DOUBLE
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# define libm_alias_double_narrow(from, to) \
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libm_alias_double_narrow_main (from, to) \
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weak_alias (from, d ## to ## l)
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#else
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# define libm_alias_double_narrow(from, to) \
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libm_alias_double_narrow_main (from, to)
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#endif
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#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
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# define libm_alias_ldouble_narrow(from, to) \
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weak_alias (from ## l, f64x ## to ## f128)
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#else
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# define libm_alias_ldouble_narrow(from, to)
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#endif
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#if __HAVE_DISTINCT_FLOAT128 && __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE
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# define libm_alias_float128_narrow(from, to) \
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weak_alias (from ## f128, f64x ## to ## f128)
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#else
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# define libm_alias_float128_narrow(from, to)
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#endif
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#endif /* math-narrow-alias.h. */
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