1 /* Alias macros for functions returning a narrower type. 2 Copyright (C) 2018-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _MATH_NARROW_ALIAS_H 20 #define _MATH_NARROW_ALIAS_H 1 21 22 #include <bits/floatn.h> 23 #include <bits/long-double.h> 24 25 /* The following macros declare aliases for a narrowing function. The 26 sole argument is the base name of a family of functions, such as 27 "add". If any platform changes long double format after the 28 introduction of narrowing functions, in a way requiring symbol 29 versioning compatibility, additional variants of these macros will 30 be needed. */ 31 32 #define libm_alias_float_double_main(func) \ 33 weak_alias (__f ## func, f ## func) \ 34 weak_alias (__f ## func, f32 ## func ## f64) \ 35 weak_alias (__f ## func, f32 ## func ## f32x) 36 37 #ifdef NO_LONG_DOUBLE 38 # define libm_alias_float_double(func) \ 39 libm_alias_float_double_main (func) \ 40 weak_alias (__f ## func, f ## func ## l) 41 #else 42 # define libm_alias_float_double(func) \ 43 libm_alias_float_double_main (func) 44 #endif 45 46 #define libm_alias_float32x_float64_main(func) \ 47 weak_alias (__f32x ## func ## f64, f32x ## func ## f64) 48 49 #ifdef NO_LONG_DOUBLE 50 # define libm_alias_float32x_float64(func) \ 51 libm_alias_float32x_float64_main (func) \ 52 weak_alias (__f32x ## func ## f64, d ## func ## l) 53 #elif defined __LONG_DOUBLE_MATH_OPTIONAL 54 # define libm_alias_float32x_float64(func) \ 55 libm_alias_float32x_float64_main (func) \ 56 weak_alias (__f32x ## func ## f64, __nldbl_d ## func ## l) 57 #else 58 # define libm_alias_float32x_float64(func) \ 59 libm_alias_float32x_float64_main (func) 60 #endif 61 62 #if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128 63 # define libm_alias_float_ldouble_f128(func) \ 64 weak_alias (__f ## func ## l, f32 ## func ## f128) 65 # define libm_alias_double_ldouble_f128(func) \ 66 weak_alias (__d ## func ## l, f32x ## func ## f128) \ 67 weak_alias (__d ## func ## l, f64 ## func ## f128) 68 #else 69 # define libm_alias_float_ldouble_f128(func) 70 # define libm_alias_double_ldouble_f128(func) 71 #endif 72 73 #if __HAVE_FLOAT64X_LONG_DOUBLE 74 # define libm_alias_float_ldouble_f64x(func) \ 75 weak_alias (__f ## func ## l, f32 ## func ## f64x) 76 # define libm_alias_double_ldouble_f64x(func) \ 77 weak_alias (__d ## func ## l, f32x ## func ## f64x) \ 78 weak_alias (__d ## func ## l, f64 ## func ## f64x) 79 #else 80 # define libm_alias_float_ldouble_f64x(func) 81 # define libm_alias_double_ldouble_f64x(func) 82 #endif 83 84 #define libm_alias_float_ldouble(func) \ 85 weak_alias (__f ## func ## l, f ## func ## l) \ 86 libm_alias_float_ldouble_f128 (func) \ 87 libm_alias_float_ldouble_f64x (func) 88 89 #define libm_alias_double_ldouble(func) \ 90 weak_alias (__d ## func ## l, d ## func ## l) \ 91 libm_alias_double_ldouble_f128 (func) \ 92 libm_alias_double_ldouble_f64x (func) 93 94 #define libm_alias_float64x_float128(func) \ 95 weak_alias (__f64x ## func ## f128, f64x ## func ## f128) 96 97 #define libm_alias_float32_float128_main(func) \ 98 weak_alias (__f32 ## func ## f128, f32 ## func ## f128) 99 100 #define libm_alias_float64_float128_main(func) \ 101 weak_alias (__f64 ## func ## f128, f64 ## func ## f128) \ 102 weak_alias (__f64 ## func ## f128, f32x ## func ## f128) 103 104 #include <math-narrow-alias-float128.h> 105 106 /* The following macros declare narrowing-named aliases for a 107 non-narrowing function. */ 108 109 #define libm_alias_double_narrow_main(from, to) \ 110 weak_alias (from, f32x ## to ## f64) 111 112 #ifdef NO_LONG_DOUBLE 113 # define libm_alias_double_narrow(from, to) \ 114 libm_alias_double_narrow_main (from, to) \ 115 weak_alias (from, d ## to ## l) 116 #else 117 # define libm_alias_double_narrow(from, to) \ 118 libm_alias_double_narrow_main (from, to) 119 #endif 120 121 #if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128 122 # define libm_alias_ldouble_narrow(from, to) \ 123 weak_alias (from ## l, f64x ## to ## f128) 124 #else 125 # define libm_alias_ldouble_narrow(from, to) 126 #endif 127 128 #if __HAVE_DISTINCT_FLOAT128 && __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE 129 # define libm_alias_float128_narrow(from, to) \ 130 weak_alias (from ## f128, f64x ## to ## f128) 131 #else 132 # define libm_alias_float128_narrow(from, to) 133 #endif 134 135 #endif /* math-narrow-alias.h. */ 136