1 /* Install given floating-point control modes. IA64 version. 2 Copyright (C) 2016-2021 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 #include <fenv.h> 20 21 #define FPSR_STATUS 0x1f80UL 22 #define FPSR_STATUS_ALL ((FPSR_STATUS << 6) | (FPSR_STATUS << 19) \ 23 | (FPSR_STATUS << 32) | (FPSR_STATUS << 45)) 24 25 int fesetmode(const femode_t * modep)26fesetmode (const femode_t *modep) 27 { 28 femode_t mode; 29 30 /* As in fesetenv. */ 31 if (((fenv_t) modep >> 62) == 0x03) 32 mode = (femode_t) modep & 0x3fffffffffffffffUL; 33 else 34 mode = *modep; 35 36 femode_t fpsr; 37 __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); 38 fpsr = (fpsr & FPSR_STATUS_ALL) | (mode & ~FPSR_STATUS_ALL); 39 __asm__ __volatile__ ("mov.m ar.fpsr=%0;;" :: "r" (fpsr)); 40 41 return 0; 42 } 43