Mercurial > dropbear
diff tomsfastmath/src/sqr/fp_sqr_comba_8.c @ 643:a362b62d38b2 dropbear-tfm
Add tomsfastmath from git rev bfa4582842bc3bab42e4be4aed5703437049502a
with Makefile.in renamed
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 23 Nov 2011 18:10:20 +0700 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tomsfastmath/src/sqr/fp_sqr_comba_8.c Wed Nov 23 18:10:20 2011 +0700 @@ -0,0 +1,102 @@ +#define TFM_DEFINES +#include "fp_sqr_comba.c" + +#ifdef TFM_SQR8 +void fp_sqr_comba8(fp_int *A, fp_int *B) +{ + fp_digit *a, b[16], 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; + SQRADDSC(a[0], a[6]); SQRADDAC(a[1], a[5]); SQRADDAC(a[2], a[4]); SQRADDDB; SQRADD(a[3], a[3]); + COMBA_STORE(b[6]); + + /* output 7 */ + CARRY_FORWARD; + SQRADDSC(a[0], a[7]); SQRADDAC(a[1], a[6]); SQRADDAC(a[2], a[5]); SQRADDAC(a[3], a[4]); SQRADDDB; + COMBA_STORE(b[7]); + + /* output 8 */ + CARRY_FORWARD; + SQRADDSC(a[1], a[7]); SQRADDAC(a[2], a[6]); SQRADDAC(a[3], a[5]); SQRADDDB; SQRADD(a[4], a[4]); + COMBA_STORE(b[8]); + + /* output 9 */ + CARRY_FORWARD; + SQRADDSC(a[2], a[7]); SQRADDAC(a[3], a[6]); SQRADDAC(a[4], a[5]); SQRADDDB; + COMBA_STORE(b[9]); + + /* output 10 */ + CARRY_FORWARD; + SQRADD2(a[3], a[7]); SQRADD2(a[4], a[6]); SQRADD(a[5], a[5]); + COMBA_STORE(b[10]); + + /* output 11 */ + CARRY_FORWARD; + SQRADD2(a[4], a[7]); SQRADD2(a[5], a[6]); + COMBA_STORE(b[11]); + + /* output 12 */ + CARRY_FORWARD; + SQRADD2(a[5], a[7]); SQRADD(a[6], a[6]); + COMBA_STORE(b[12]); + + /* output 13 */ + CARRY_FORWARD; + SQRADD2(a[6], a[7]); + COMBA_STORE(b[13]); + + /* output 14 */ + CARRY_FORWARD; + SQRADD(a[7], a[7]); + COMBA_STORE(b[14]); + COMBA_STORE2(b[15]); + COMBA_FINI; + + B->used = 16; + B->sign = FP_ZPOS; + memcpy(B->dp, b, 16 * sizeof(fp_digit)); + memset(B->dp + 16, 0, (FP_SIZE - 16) * sizeof(fp_digit)); + fp_clamp(B); +} +#endif + +