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Update code comments

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This commit is contained in:
Peter Dettman 2015-07-07 09:16:15 +09:30
parent 7d054cd030
commit a5d796e0b1
1 changed files with 2 additions and 2 deletions
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4
src/group_impl.h
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@ -528,7 +528,7 @@ static void secp256k1_gej_add_ge(secp256k1_gej_t *r, const secp256k1_gej_t *a, c
t = u1; secp256k1_fe_add(&t, &u2); /* t = T = U1+U2 (2) */
m = s1; secp256k1_fe_add(&m, &s2); /* m = M = S1+S2 (2) */
secp256k1_fe_sqr(&rr, &t); /* rr = T^2 (1) */
secp256k1_fe_negate(&m_alt, &u2, 1); /* m = -X2*Z1^2 */
secp256k1_fe_negate(&m_alt, &u2, 1); /* Malt = -X2*Z1^2 */
secp256k1_fe_mul(&tt, &u1, &m_alt); /* tt = -U1*U2 (2) */
secp256k1_fe_add(&rr, &tt); /* rr = R = T^2-U1*U2 (3) */
/** If lambda = R/M = 0/0 we have a problem (except in the "trivial"
@ -542,7 +542,7 @@ static void secp256k1_gej_add_ge(secp256k1_gej_t *r, const secp256k1_gej_t *a, c
* so we set R/M equal to this. */
secp256k1_fe_negate(&rr_alt, &s2, 1); /* rr = -Y2*Z1^3 */
secp256k1_fe_add(&rr_alt, &s1); /* rr = Y1*Z2^3 - Y2*Z1^3 */
secp256k1_fe_add(&m_alt, &u1); /* m = X1*Z2^2 - X2*Z1^2 */
secp256k1_fe_add(&m_alt, &u1); /* Malt = X1*Z2^2 - X2*Z1^2 */
secp256k1_fe_cmov(&rr_alt, &rr, !degenerate);
secp256k1_fe_cmov(&m_alt, &m, !degenerate);