commit
2bc7bdbb3f
@ -20,8 +20,6 @@ int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d)
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{
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mp_digit D, r, rr;
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int x, res;
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mp_int t;
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/* if the shift count is <= 0 then we do no work */
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if (b <= 0) {
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@ -32,24 +30,19 @@ int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d)
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return res;
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}
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if ((res = mp_init (&t)) != MP_OKAY) {
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/* copy */
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if ((res = mp_copy (a, c)) != MP_OKAY) {
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return res;
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}
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/* 'a' should not be used after here - it might be the same as d */
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/* get the remainder */
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if (d != NULL) {
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if ((res = mp_mod_2d (a, b, &t)) != MP_OKAY) {
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mp_clear (&t);
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if ((res = mp_mod_2d (a, b, d)) != MP_OKAY) {
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return res;
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}
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}
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/* copy */
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if ((res = mp_copy (a, c)) != MP_OKAY) {
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mp_clear (&t);
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return res;
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}
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/* shift by as many digits in the bit count */
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if (b >= (int)DIGIT_BIT) {
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mp_rshd (c, b / DIGIT_BIT);
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@ -84,10 +77,6 @@ int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d)
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}
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}
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mp_clamp (c);
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if (d != NULL) {
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mp_exch (&t, d);
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}
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mp_clear (&t);
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return MP_OKAY;
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}
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#endif
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