mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 21:20:18 +00:00
67236aeb6e
This patch contains the miscellaneous math routines and headers we have
implemented for RISC-V. This includes things from <math.h> that aren't
completely ISA-generic, floating-point bit manipulation, and soft-fp
hooks.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/riscv/bits/fenv.h: New file.
* sysdeps/riscv/e_sqrtl.c: Likewise.
* sysdeps/riscv/fpu_control.h: Likewise.
* sysdeps/riscv/math-tests.h: Likewise.
* sysdeps/riscv/nofpu/Implies: Likewise.
* sysdeps/riscv/sfp-machine.h: Likewise.
* sysdeps/riscv/tininess.h: Likewise.
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* 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.
|
|
|
|
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/soft-fp.h>
|
|
#include <soft-fp/quad.h>
|
|
|
|
long double
|
|
__ieee754_sqrtl (const long double a)
|
|
{
|
|
FP_DECL_EX;
|
|
FP_DECL_Q (A); FP_DECL_Q (C);
|
|
long double c;
|
|
|
|
FP_INIT_ROUNDMODE;
|
|
FP_UNPACK_Q (A, a);
|
|
FP_SQRT_Q (C, A);
|
|
FP_PACK_Q (c, C);
|
|
FP_HANDLE_EXCEPTIONS;
|
|
return c;
|
|
}
|
|
strong_alias (__ieee754_sqrtl, __sqrtl_finite)
|