diff options
Diffstat (limited to 'sysdeps/alpha/e_sqrtl.c')
| -rw-r--r-- | sysdeps/alpha/e_sqrtl.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/alpha/e_sqrtl.c b/sysdeps/alpha/e_sqrtl.c new file mode 100644 index 0000000000..689681adfc --- /dev/null +++ b/sysdeps/alpha/e_sqrtl.c @@ -0,0 +1,49 @@ +/* long double square root in software floating-point emulation. + Copyright (C) 1997-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson (rth@cygnus.com) and + Jakub Jelinek (jj@ultra.linux.cz). + + 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 + <http://www.gnu.org/licenses/>. */ + +#include <stdlib.h> +#include <soft-fp.h> +#include <quad.h> +#include <shlib-compat.h> + +long double +__ieee754_sqrtl (const long double a) +{ + FP_DECL_EX; + FP_DECL_Q(A); FP_DECL_Q(C); + long double c; + long _round = 4; /* dynamic rounding */ + + FP_INIT_ROUNDMODE; + FP_UNPACK_Q(A, a); + FP_SQRT_Q(C, A); + FP_PACK_Q(c, C); + FP_HANDLE_EXCEPTIONS; + return c; +} + +/* ??? We forgot to add this symbol in 2.15. Getting this into 2.18 isn't as + straight-forward as just adding the alias, since a generic Versions file + includes the 2.15 version and the linker uses the first one it sees. */ +#if SHLIB_COMPAT (libm, GLIBC_2_15, GLIBC_2_18) +versioned_symbol (libm, __ieee754_sqrtl, __sqrtl_finite, GLIBC_2_18); +#else +strong_alias(__ieee754_sqrtl, __sqrtl_finite) +#endif |