1 /* mpn_sec_sqr. 2 3 Contributed to the GNU project by Torbjörn Granlund. 4 5 Copyright 2013, 2014 Free Software Foundation, Inc. 6 7 This file is part of the GNU MP Library. 8 9 The GNU MP Library is free software; you can redistribute it and/or modify 10 it under the terms of either: 11 12 * the GNU Lesser General Public License as published by the Free 13 Software Foundation; either version 3 of the License, or (at your 14 option) any later version. 15 16 or 17 18 * the GNU General Public License as published by the Free Software 19 Foundation; either version 2 of the License, or (at your option) any 20 later version. 21 22 or both in parallel, as here. 23 24 The GNU MP Library is distributed in the hope that it will be useful, but 25 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27 for more details. 28 29 You should have received copies of the GNU General Public License and the 30 GNU Lesser General Public License along with the GNU MP Library. If not, 31 see https://www.gnu.org/licenses/. */ 32 33 #include "gmp.h" 34 #include "gmp-impl.h" 35 36 #if ! HAVE_NATIVE_mpn_sqr_basecase 37 /* The limit of the generic code is SQR_TOOM2_THRESHOLD. */ 38 #define SQR_BASECASE_LIM SQR_TOOM2_THRESHOLD 39 #endif 40 41 #if HAVE_NATIVE_mpn_sqr_basecase 42 #ifdef TUNE_SQR_TOOM2_MAX 43 /* We slightly abuse TUNE_SQR_TOOM2_MAX here. If it is set for an assembly 44 mpn_sqr_basecase, it comes from SQR_TOOM2_THRESHOLD_MAX in the assembly 45 file. An assembly mpn_sqr_basecase that does not define it should allow 46 any size. */ 47 #define SQR_BASECASE_LIM SQR_TOOM2_THRESHOLD 48 #endif 49 #endif 50 51 #ifdef WANT_FAT_BINARY 52 /* For fat builds, we use SQR_TOOM2_THRESHOLD which will expand to a read from 53 __gmpn_cpuvec. Perhaps any possible sqr_basecase.asm allow any size, and we 54 limit the use unnecessarily. We cannot tell, so play it safe. FIXME. */ 55 #define SQR_BASECASE_LIM SQR_TOOM2_THRESHOLD 56 #endif 57 58 void 59 mpn_sec_sqr (mp_ptr rp, 60 mp_srcptr ap, mp_size_t an, 61 mp_ptr tp) 62 { 63 #ifndef SQR_BASECASE_LIM 64 /* If SQR_BASECASE_LIM is now not defined, use mpn_sqr_basecase for any operand 65 size. */ 66 mpn_sqr_basecase (rp, ap, an); 67 #else 68 /* Else use mpn_sqr_basecase for its allowed sizes, else mpn_mul_basecase. */ 69 mpn_mul_basecase (rp, ap, an, ap, an); 70 #endif 71 } 72 73 mp_size_t 74 mpn_sec_sqr_itch (mp_size_t an) 75 { 76 return 0; 77 } 78