INNER CODE UNIT · C

inf

StrobeLabs/eth.zig · src/crypto/blst/src/bulk_addition.c:64

        inf = vec_is_zero(A->Z, sizeof(A->Z));	\
        vec_select(B->X, A->Z, B->X, sizeof(B->X), inf); \
        sqr_##field(B->Y, A->X);		\
        mul_by_3_##field(B->Y, B->Y);		/* 3*X1^2 */ \
        vec_copy(B->Z, A->Z, sizeof(B->Z));	/* 2*Y1   */ \
    }						/* B->Y is numenator    */ \
						/* B->Z is denominator  */ \
    vec_select(A->X, B->X, A->X, sizeof(A->X), inf); \
    vec_select(A->Y, A->Z, A->Y, sizeof(A->Y), inf); \
    vec_select(A->Z, one,  B->Z, sizeof(A->Z), inf); \
    vec_select(B->Z, zero, B->Z, sizeof(B->Z), inf); \
    if (mul_acc != NULL) \
        mul_##field(A->Z, A->Z, mul_acc);	/* chain multiplication */\
}

/*
 * Calculate λ and resulting coordinates.
 *

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