| /* Copyright 2015 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "common.h" |
| #include "math.h" |
| #include "math_util.h" |
| #include "vec3.h" |
| #include "util.h" |
| |
| void vec3_scalar_mul(vec3_t v, float c) |
| { |
| v[X] *= c; |
| v[Y] *= c; |
| v[Z] *= c; |
| } |
| |
| float vec3_dot(const vec3_t v, const vec3_t w) |
| { |
| return v[X] * w[X] + v[Y] * w[Y] + v[Z] * w[Z]; |
| } |
| |
| float vec3_norm_squared(const vec3_t v) |
| { |
| return vec3_dot(v, v); |
| } |
| |
| float vec3_norm(const vec3_t v) |
| { |
| return sqrtf(vec3_norm_squared(v)); |
| } |
| |