NE10_normalize.c

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/*
 *  Copyright 2011-16 ARM Limited and Contributors.
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 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
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 *      names of its contributors may be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
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/*
 * NE10 Library : math/NE10_normalize.c
 */

#include "NE10_types.h"
#include "macros.h"

#include <assert.h>

#include <math.h>

ne10_result_t ne10_normalize_vec2f_c (ne10_vec2f_t * dst, ne10_vec2f_t * src, ne10_uint32_t count)
{
    ne10_float32_t len;

    NE10_CHECKPOINTER_DstSrc;
    for ( unsigned int itr = 0; itr < count; itr++ )
    {
        len = sqrt (src[ itr ].x * src[ itr ].x +
                    src[ itr ].y * src[ itr ].y) ;

        dst[ itr ].x = src[ itr ].x / len;
        dst[ itr ].y = src[ itr ].y / len;
    }
    return NE10_OK;
}

ne10_result_t ne10_normalize_vec3f_c (ne10_vec3f_t * dst, ne10_vec3f_t * src, ne10_uint32_t count)
{
    ne10_float32_t len;

    NE10_CHECKPOINTER_DstSrc;
    for ( unsigned int itr = 0; itr < count; itr++ )
    {
        len = sqrt (src[ itr ].x * src[ itr ].x +
                    src[ itr ].y * src[ itr ].y +
                    src[ itr ].z * src[ itr ].z);

        dst[ itr ].x = src[ itr ].x / len;
        dst[ itr ].y = src[ itr ].y / len;
        dst[ itr ].z = src[ itr ].z / len;
    }
    return NE10_OK;
}

ne10_result_t ne10_normalize_vec4f_c (ne10_vec4f_t * dst, ne10_vec4f_t * src, ne10_uint32_t count)
{
    ne10_float32_t len;

    NE10_CHECKPOINTER_DstSrc;
    for ( unsigned int itr = 0; itr < count; itr++ )
    {
        len = sqrt (src[ itr ].x * src[ itr ].x +
                    src[ itr ].y * src[ itr ].y +
                    src[ itr ].z * src[ itr ].z +
                    src[ itr ].w * src[ itr ].w);

        dst[ itr ].x = src[ itr ].x / len;
        dst[ itr ].y = src[ itr ].y / len;
        dst[ itr ].z = src[ itr ].z / len;
        dst[ itr ].w = src[ itr ].w / len;
    }
    return NE10_OK;
}