/* PURPOSE: (Vector cross product difference) ASSUMPTIONS AND LIMITATIONS: ((3x1 vector implementation)) PROGRAMMERS: (((Les Quiocho) (NASA/JSC) (Jan 1990) (v1.0) (Init Release))) */ #include "trick/trick_math.h" void dvxv_sub(double diff[], /* Out: Difference of cross product and difference */ double vect1[], /* In: Vector1 */ double vect2[]) { /* In: Vector2 */ diff[0] -= ((vect1[1] * vect2[2]) - (vect1[2] * vect2[1])); diff[1] -= ((vect1[2] * vect2[0]) - (vect1[0] * vect2[2])); diff[2] -= ((vect1[0] * vect2[1]) - (vect1[1] * vect2[0])); return; }