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view tomsfastmath/src/sqr/fp_sqr_comba_6.c @ 643:a362b62d38b2 dropbear-tfm
Add tomsfastmath from git rev bfa4582842bc3bab42e4be4aed5703437049502a
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author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 23 Nov 2011 18:10:20 +0700 |
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#define TFM_DEFINES #include "fp_sqr_comba.c" #ifdef TFM_SQR6 void fp_sqr_comba6(fp_int *A, fp_int *B) { fp_digit *a, b[12], c0, c1, c2, sc0, sc1, sc2; #ifdef TFM_ISO fp_word tt; #endif a = A->dp; COMBA_START; /* clear carries */ CLEAR_CARRY; /* output 0 */ SQRADD(a[0],a[0]); COMBA_STORE(b[0]); /* output 1 */ CARRY_FORWARD; SQRADD2(a[0], a[1]); COMBA_STORE(b[1]); /* output 2 */ CARRY_FORWARD; SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]); COMBA_STORE(b[2]); /* output 3 */ CARRY_FORWARD; SQRADD2(a[0], a[3]); SQRADD2(a[1], a[2]); COMBA_STORE(b[3]); /* output 4 */ CARRY_FORWARD; SQRADD2(a[0], a[4]); SQRADD2(a[1], a[3]); SQRADD(a[2], a[2]); COMBA_STORE(b[4]); /* output 5 */ CARRY_FORWARD; SQRADDSC(a[0], a[5]); SQRADDAC(a[1], a[4]); SQRADDAC(a[2], a[3]); SQRADDDB; COMBA_STORE(b[5]); /* output 6 */ CARRY_FORWARD; SQRADD2(a[1], a[5]); SQRADD2(a[2], a[4]); SQRADD(a[3], a[3]); COMBA_STORE(b[6]); /* output 7 */ CARRY_FORWARD; SQRADD2(a[2], a[5]); SQRADD2(a[3], a[4]); COMBA_STORE(b[7]); /* output 8 */ CARRY_FORWARD; SQRADD2(a[3], a[5]); SQRADD(a[4], a[4]); COMBA_STORE(b[8]); /* output 9 */ CARRY_FORWARD; SQRADD2(a[4], a[5]); COMBA_STORE(b[9]); /* output 10 */ CARRY_FORWARD; SQRADD(a[5], a[5]); COMBA_STORE(b[10]); COMBA_STORE2(b[11]); COMBA_FINI; B->used = 12; B->sign = FP_ZPOS; memcpy(B->dp, b, 12 * sizeof(fp_digit)); memset(B->dp + 12, 0, (FP_SIZE - 12) * sizeof(fp_digit)); fp_clamp(B); } #endif