fe_neg.c (855B)
1 #include "fe.h" 2 3 /* 4 h = -f 5 6 Preconditions: 7 |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. 8 9 Postconditions: 10 |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. 11 */ 12 13 void fe_neg(fe h,const fe f) 14 { 15 crypto_int32 f0 = f[0]; 16 crypto_int32 f1 = f[1]; 17 crypto_int32 f2 = f[2]; 18 crypto_int32 f3 = f[3]; 19 crypto_int32 f4 = f[4]; 20 crypto_int32 f5 = f[5]; 21 crypto_int32 f6 = f[6]; 22 crypto_int32 f7 = f[7]; 23 crypto_int32 f8 = f[8]; 24 crypto_int32 f9 = f[9]; 25 crypto_int32 h0 = -f0; 26 crypto_int32 h1 = -f1; 27 crypto_int32 h2 = -f2; 28 crypto_int32 h3 = -f3; 29 crypto_int32 h4 = -f4; 30 crypto_int32 h5 = -f5; 31 crypto_int32 h6 = -f6; 32 crypto_int32 h7 = -f7; 33 crypto_int32 h8 = -f8; 34 crypto_int32 h9 = -f9; 35 h[0] = h0; 36 h[1] = h1; 37 h[2] = h2; 38 h[3] = h3; 39 h[4] = h4; 40 h[5] = h5; 41 h[6] = h6; 42 h[7] = h7; 43 h[8] = h8; 44 h[9] = h9; 45 }