33 lines
654 B
C
33 lines
654 B
C
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/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "common.h"
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#include "math.h"
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#include "math_util.h"
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#include "vec3.h"
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#include "util.h"
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void fpv3_scalar_mul(fpv3_t v, fp_t c)
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{
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v[X] = fp_mul(v[X], c);
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v[Y] = fp_mul(v[Y], c);
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v[Z] = fp_mul(v[Z], c);
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}
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fp_t fpv3_dot(const fpv3_t v, const fpv3_t w)
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{
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return fp_mul(v[X], w[X]) + fp_mul(v[Y], w[Y]) + fp_mul(v[Z], w[Z]);
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}
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fp_t fpv3_norm_squared(const fpv3_t v)
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{
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return fpv3_dot(v, v);
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}
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fp_t fpv3_norm(const fpv3_t v)
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{
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return fp_sqrtf(fpv3_norm_squared(v));
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}
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