vec_sub (
VECTOR* vector1, VECTOR* vector2);
Subtracts the second vector from the first, and copies the difference to the first.
Parameters:
vector1 - result
vector2 - to be subtracted
Returns:
vector1
Modifies:
vector1 = vector1 - vector2
Speed:
Fast
Algorithm:
vector1[0] -= vector2[0];
vector1[1] -= vector2[1];
vector1[2] -= vector2[2];
Example:
vec_set(v1,nullvector); // deletes v1 to 0,0,0
vec_sub(v1,v2); // v1 contains the negative of v2
See also:
Vectors, vec_add,
vec_set, vec_scale,
vec_dot, vec_inverse,
vec_diff
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