From 8a77b4785acd143d76ccc08142abb39c0100de3d Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sun, 27 Apr 2025 03:39:44 +0200 Subject: or1k: add fenv support from glibc --- libm/or1k/fesetmode.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 libm/or1k/fesetmode.c (limited to 'libm/or1k/fesetmode.c') diff --git a/libm/or1k/fesetmode.c b/libm/or1k/fesetmode.c new file mode 100644 index 000000000..74490621b --- /dev/null +++ b/libm/or1k/fesetmode.c @@ -0,0 +1,38 @@ +/* Install given floating-point control modes. OpenRISC version. + Copyright (C) 2024-2025 Free Software Foundation, Inc. + + 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 + . */ + +#include +#include + +int +fesetmode (const femode_t *modep) +{ + fpu_control_t cw; + fpu_control_t cw_new; + + _FPU_GETCW (cw); + cw_new = cw & ~_FPU_FPCSR_RM_MASK; + if (modep == FE_DFL_MODE) + cw_new |= (_FPU_DEFAULT & _FPU_FPCSR_RM_MASK); + else + cw_new |= (*modep & _FPU_FPCSR_RM_MASK); + if (cw != cw_new) + _FPU_SETCW (cw_new); + + /* Success. */ + return 0; +} -- cgit v1.2.3