/* _Float128 ifunc ABI/ifunc generation macros. Copyright (C) 2020-2025 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 . */ #ifndef _FLOAT128_IFUNC_H #define _FLOAT128_IFUNC_H 1 /* Disable hidden prototypes. These perform function renames which prevent the ifunc functions from working. */ #undef hidden_proto #define hidden_proto(x) #define NO_MATH_REDIRECT 1 /* Include the real math.h to avoid optimizations caused by include/math.h (e.x fabsf128 prototype is masked by an inline definition).*/ #define f64xfmaf128 __hide_f64xfmaf128 #define f64xsqrtf128 __hide_f64xsqrtf128 #include #undef f64xfmaf128 #undef f64xsqrtf128 #include #include #include #include #include "init-arch.h" #include #include #include /* _F128_IFUNC2(func, from, r) Generate an ifunc symbol func ## r from the symbols from ## {power8, power9} ## r We use the PPC hwcap bit HAS_IEEE128 to select between the two with the assumption all P9 features are available on such targets. */ #define _F128_IFUNC2(func, from, r) \ libc_ifunc (func ## r, (hwcap2 & PPC_FEATURE2_HAS_IEEE128) \ ? from ## _power9 ## r : from ## _power8 ## r) /* _F128_IFUNC(func, r) Similar to above, except the exported symbol name trivially remaps from func ## {cpu} ## r to func ## r. */ #define _F128_IFUNC(func, r) _F128_IFUNC2(func, func, r) /* MAKE_IMPL_IFUNC2(func, pfx1, pfx2, r) Declare external symbols of type pfx1 ## func ## f128 ## r with the name pfx2 ## func ## f128 ## _{cpu} ## r which are exported as implementation specific symbols (i.e backing support for type classification macros). */ #define MAKE_IMPL_IFUNC2(func, pfx1, pfx2, r) \ extern __typeof (pfx1 ## func ## f128 ## r) pfx2 ## func ## f128_power8 ## r; \ extern __typeof (pfx1 ## func ## f128 ## r) pfx2 ## func ## f128_power9 ## r; \ _F128_IFUNC2 (__ ## func ## f128, pfx2 ## func ## f128, r); /* GEN_COMPAT_R_e(f) Generate a compatibility symbol for finite alias of ieee function. */ #define GEN_COMPAT_R_e(f, r) \ libm_alias_finite (__ieee754_ ## f ## f128 ## r, __ ## f ## f128 ## r) #define GEN_COMPAT_e_acos(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_acosh(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_asin(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_sinh(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_atan2(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_atanh(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_cosh(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_exp10(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_exp2(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_exp(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_fmod(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_gamma_r(f) GEN_COMPAT_R_e(f,_r) #define GEN_COMPAT_e_hypot(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_j0(f) GEN_COMPAT_R_e(f,) GEN_COMPAT_R_e(y0,) #define GEN_COMPAT_e_j1(f) GEN_COMPAT_R_e(f,) GEN_COMPAT_R_e(y1,) #define GEN_COMPAT_e_jn(f) GEN_COMPAT_R_e(f,) GEN_COMPAT_R_e(yn,) #define GEN_COMPAT_e_lgamma_r(f) GEN_COMPAT_R_e(f,_r) #define GEN_COMPAT_e_log10(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_log2(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_log(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_pow(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_remainder(f) GEN_COMPAT_R_e(f,) #define GEN_COMPAT_e_sqrt(f) GEN_COMPAT_R_e(f,) /* MAKE_IEEE_IFUNC_R(func, pfx, r) Declare an ieee ifunc symbol used internally by libm. E.g __ieee754_sinf128 */ #define MAKE_IEEE_IFUNC_R(func, r) \ extern __typeof (__ieee754_ ## func ## f128 ## r) __ieee754_ ## func ## f128_power8 ## r; \ extern __typeof (__ieee754_ ## func ## f128 ## r) __ieee754_ ## func ## f128_power9 ## r; \ _F128_IFUNC2 (__ieee754_ ## func ## f128, __ieee754_ ## func ## f128, r); /* MAKE_IFUNCP_WRAP_R(w, func, r) Export a function which the implementation wraps with prefix w to to func ## r. */ #define MAKE_IFUNCP_WRAP_R(w, func, r) \ extern __typeof (func ## f128 ## r) __ ## func ## f128 ## r; \ MAKE_IMPL_IFUNC2 (func,__,__ ## w, r) \ weak_alias (__ ## func ## f128 ## r, func ## f128 ## r); \ libm_alias_float128_other_r (__ ## func, func, r); /* MAKE_IFUNCP_R(func, r) The default IFUNC generator for all libm _Float128 ABI except when specifically overwritten. This is a convenience wrapper around MAKE_IFUNCP_R where w is not used. */ #define MAKE_IFUNCP_R(func,r) MAKE_IFUNCP_WRAP_R (,func,r) /* Generic aliasing functions. */ #define DECL_ALIAS(f) MAKE_IFUNCP_R (f,) #define DECL_ALIAS_s(f) MAKE_IFUNCP_R (f,) #define DECL_ALIAS_w(f) MAKE_IFUNCP_R (f,) #define DECL_ALIAS_e(f) MAKE_IEEE_IFUNC_R (f,) #define DECL_ALIAS_k(f) #define DECL_ALIAS_R_w(f) MAKE_IFUNCP_R (f, _r) #define DECL_ALIAS_R_e(f) MAKE_IEEE_IFUNC_R (f,_r) /* No symbols are defined in these helper/wrapper objects. */ #define DECL_ALIAS_lgamma_neg(x) #define DECL_ALIAS_lgamma_product(x) #define DECL_ALIAS_gamma_product(x) #define DECL_ALIAS_x2y2m1(x) #define DECL_ALIAS_s_log1p(x) #define DECL_ALIAS_s_scalbln(x) #define DECL_ALIAS_s_scalbn(x) /* Ensure the wrapper functions get exposed via IFUNC, not the wrappee (e.g __w_log1pf128_power8 instead of __log1pf128_power8. */ #define DECL_ALIAS_w_log1p(x) \ MAKE_IFUNCP_WRAP_R (w_, x, ) \ MAKE_IFUNCP_WRAP_R (w_, logp1, ) #define DECL_ALIAS_w_scalbln(x) MAKE_IFUNCP_WRAP_R(w_,x,) /* These are declared in their respective jX objects. */ #define DECL_ALIAS_w_j0(f) MAKE_IFUNCP_R (f,) MAKE_IFUNCP_R (y0,) #define DECL_ALIAS_w_j1(f) MAKE_IFUNCP_R (f,) MAKE_IFUNCP_R (y1,) #define DECL_ALIAS_w_jn(f) MAKE_IFUNCP_R (f,) MAKE_IFUNCP_R (yn,) #define DECL_ALIAS_e_j0(f) MAKE_IEEE_IFUNC_R (f,) MAKE_IEEE_IFUNC_R (y0,) #define DECL_ALIAS_e_j1(f) MAKE_IEEE_IFUNC_R (f,) MAKE_IEEE_IFUNC_R (y1,) #define DECL_ALIAS_e_jn(f) MAKE_IEEE_IFUNC_R (f,) MAKE_IEEE_IFUNC_R (yn,) #define DECL_ALIAS_s_erf(f) MAKE_IFUNCP_R (f,) MAKE_IFUNCP_R (erfc,) /* scalbnf128 is an alias of ldexpf128. */ #define DECL_ALIAS_s_ldexp(f) MAKE_IFUNCP_R (f,) MAKE_IFUNCP_WRAP_R (wrap_, scalbn,) /* f64xfmaf128 is an alias of fmaf128. */ #define DECL_ALIAS_s_fma(f) MAKE_IFUNCP_R (f,) libm_alias_float128_narrow (__fma, fma) /* f64xsqrtf128 is an alias of sqrtf128. */ #define DECL_ALIAS_w_sqrt(f) MAKE_IFUNCP_R (f,) libm_alias_float128_narrow (__sqrt, sqrt) /* Declare an IFUNC for a symbol which only exists to provide long double == ieee128 ABI. */ #define DECL_LDOUBLE_ALIAS(func, RTYPE, ARGS) \ extern RTYPE func ARGS; \ extern __typeof (func) func ## _power8; \ extern __typeof (func) func ## _power9; \ _F128_IFUNC ( func,) /* Handle the special case functions which exist only to support ldouble == ieee128. */ #define DECL_ALIAS_w_scalb(x) \ DECL_LDOUBLE_ALIAS (__scalbf128,_Float128, (_Float128, _Float128)) \ libm_alias_float128_other_r_ldbl (__scalb, scalb,) #endif /* ifndef _FLOAT128_IFUNC_H */