cannam@95: /*
cannam@95:  * Copyright (c) 2003, 2007-11 Matteo Frigo
cannam@95:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
cannam@95:  *
cannam@95:  * This program is free software; you can redistribute it and/or modify
cannam@95:  * it under the terms of the GNU General Public License as published by
cannam@95:  * the Free Software Foundation; either version 2 of the License, or
cannam@95:  * (at your option) any later version.
cannam@95:  *
cannam@95:  * This program is distributed in the hope that it will be useful,
cannam@95:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@95:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@95:  * GNU General Public License for more details.
cannam@95:  *
cannam@95:  * You should have received a copy of the GNU General Public License
cannam@95:  * along with this program; if not, write to the Free Software
cannam@95:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@95:  *
cannam@95:  */
cannam@95: 
cannam@95: 
cannam@95: #include "ifftw.h"
cannam@95: 
cannam@95: #if HAVE_AVX
cannam@95: 
cannam@95: #if defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)
cannam@95: 
cannam@95: #include "amd64-cpuid.h"
cannam@95: 
cannam@95: int X(have_simd_avx)(void)
cannam@95: {
cannam@95:        static int init = 0, res;
cannam@95: 
cannam@95:        if (!init) {
cannam@95: 	    res = 1 
cannam@95: 		 && ((cpuid_ecx(1) & 0x18000000) == 0x18000000)
cannam@95: 		 && ((xgetbv_eax(0) & 0x6) == 0x6);
cannam@95: 	    init = 1;
cannam@95:        }
cannam@95:        return res;
cannam@95: }
cannam@95: 
cannam@95: #else /* 32-bit code */
cannam@95: 
cannam@95: #include "x86-cpuid.h"
cannam@95: 
cannam@95: int X(have_simd_avx)(void)
cannam@95: {
cannam@95:        static int init = 0, res;
cannam@95: 
cannam@95:        if (!init) {
cannam@95: 	    res =   !is_386() 
cannam@95: 		 && has_cpuid()
cannam@95: 		 && ((cpuid_ecx(1) & 0x18000000) == 0x18000000)
cannam@95: 		 && ((xgetbv_eax(0) & 0x6) == 0x6);
cannam@95: 	    init = 1;
cannam@95:        }
cannam@95:        return res;
cannam@95: }
cannam@95: #endif
cannam@95: 
cannam@95: #endif