Chris@10: /*
Chris@10:  * Copyright (c) 2003, 2007-11 Matteo Frigo
Chris@10:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
Chris@10:  *
Chris@10:  * This program is free software; you can redistribute it and/or modify
Chris@10:  * it under the terms of the GNU General Public License as published by
Chris@10:  * the Free Software Foundation; either version 2 of the License, or
Chris@10:  * (at your option) any later version.
Chris@10:  *
Chris@10:  * This program is distributed in the hope that it will be useful,
Chris@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@10:  * GNU General Public License for more details.
Chris@10:  *
Chris@10:  * You should have received a copy of the GNU General Public License
Chris@10:  * along with this program; if not, write to the Free Software
Chris@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@10:  *
Chris@10:  */
Chris@10: 
Chris@10: 
Chris@10: #include "ifftw.h"
Chris@10: 
Chris@10: #if HAVE_AVX
Chris@10: 
Chris@10: #if defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64)
Chris@10: 
Chris@10: #include "amd64-cpuid.h"
Chris@10: 
Chris@10: int X(have_simd_avx)(void)
Chris@10: {
Chris@10:        static int init = 0, res;
Chris@10: 
Chris@10:        if (!init) {
Chris@10: 	    res = 1 
Chris@10: 		 && ((cpuid_ecx(1) & 0x18000000) == 0x18000000)
Chris@10: 		 && ((xgetbv_eax(0) & 0x6) == 0x6);
Chris@10: 	    init = 1;
Chris@10:        }
Chris@10:        return res;
Chris@10: }
Chris@10: 
Chris@10: #else /* 32-bit code */
Chris@10: 
Chris@10: #include "x86-cpuid.h"
Chris@10: 
Chris@10: int X(have_simd_avx)(void)
Chris@10: {
Chris@10:        static int init = 0, res;
Chris@10: 
Chris@10:        if (!init) {
Chris@10: 	    res =   !is_386() 
Chris@10: 		 && has_cpuid()
Chris@10: 		 && ((cpuid_ecx(1) & 0x18000000) == 0x18000000)
Chris@10: 		 && ((xgetbv_eax(0) & 0x6) == 0x6);
Chris@10: 	    init = 1;
Chris@10:        }
Chris@10:        return res;
Chris@10: }
Chris@10: #endif
Chris@10: 
Chris@10: #endif