1 /* TomsFastMath, a fast ISO C bignum library.
3 * This project is meant to fill in where LibTomMath
4 * falls short. That is speed ;-)
6 * This project is public domain and free for all purposes.
8 * Tom St Denis, tomstdenis@gmail.com
10 #include <tfm_private.h>
12 /* unsigned addition */
13 void s_fp_add(fp_int *a, fp_int *b, fp_int *c)
18 y = MAX(a->used, b->used);
19 oldused = MIN(c->used, FP_SIZE);
23 for (x = 0; x < y; x++) {
24 t += ((fp_word)a->dp[x]) + ((fp_word)b->dp[x]);
25 c->dp[x] = (fp_digit)t;
28 if (t != 0 && x < FP_SIZE) {
29 c->dp[c->used++] = (fp_digit)t;
34 for (; x < oldused; x++) {