65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
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#define TFM_DEFINES
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#include "fp_sqr_comba.c"
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#ifdef TFM_SQR4
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void fp_sqr_comba4(fp_int *A, fp_int *B)
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{
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fp_digit *a, b[8], c0, c1, c2, sc0, sc1, sc2;
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#ifdef TFM_ISO
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fp_word tt;
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#endif
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a = A->dp;
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COMBA_START;
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/* clear carries */
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CLEAR_CARRY;
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/* output 0 */
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SQRADD(a[0],a[0]);
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COMBA_STORE(b[0]);
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/* output 1 */
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CARRY_FORWARD;
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SQRADD2(a[0], a[1]);
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COMBA_STORE(b[1]);
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/* output 2 */
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CARRY_FORWARD;
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SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]);
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COMBA_STORE(b[2]);
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/* output 3 */
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CARRY_FORWARD;
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SQRADD2(a[0], a[3]); SQRADD2(a[1], a[2]);
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COMBA_STORE(b[3]);
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/* output 4 */
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CARRY_FORWARD;
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SQRADD2(a[1], a[3]); SQRADD(a[2], a[2]);
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COMBA_STORE(b[4]);
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/* output 5 */
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CARRY_FORWARD;
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SQRADD2(a[2], a[3]);
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COMBA_STORE(b[5]);
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/* output 6 */
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CARRY_FORWARD;
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SQRADD(a[3], a[3]);
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COMBA_STORE(b[6]);
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COMBA_STORE2(b[7]);
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COMBA_FINI;
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B->used = 8;
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B->sign = FP_ZPOS;
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memcpy(B->dp, b, 8 * sizeof(fp_digit));
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fp_clamp(B);
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}
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#endif
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/* $Source: /cvs/libtom/tomsfastmath/src/sqr/fp_sqr_comba_4.c,v $ */
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/* $Revision: 1.2 $ */
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/* $Date: 2007/02/17 03:39:01 $ */
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