/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* ---- includes ----------------------------------------------------------- */
#include "b_TensorEm/Int16Vec3D.h"
#include "b_BasicEm/Functions.h"
#include "b_BasicEm/Math.h"
#include "b_BasicEm/Memory.h"
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/* ---- \ghd{ I/O } -------------------------------------------------------- */
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uint32 bts_Int16Vec3D_memSize( struct bbs_Context* cpA,
const struct bts_Int16Vec3D *ptrA )
{
return bbs_SIZEOF16( struct bts_Int16Vec3D );
}
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uint32 bts_Int16Vec3D_memWrite( struct bbs_Context* cpA,
const struct bts_Int16Vec3D* ptrA,
uint16* memPtrA )
{
memPtrA += bbs_memWrite16( &ptrA->xE, memPtrA );
memPtrA += bbs_memWrite16( &ptrA->yE, memPtrA );
memPtrA += bbs_memWrite16( &ptrA->zE, memPtrA );
return bbs_SIZEOF16( *ptrA );
}
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uint32 bts_Int16Vec3D_memRead( struct bbs_Context* cpA,
struct bts_Int16Vec3D* ptrA,
const uint16* memPtrA )
{
if( bbs_Context_error( cpA ) ) return 0;
memPtrA += bbs_memRead16( &ptrA->xE, memPtrA );
memPtrA += bbs_memRead16( &ptrA->yE, memPtrA );
memPtrA += bbs_memRead16( &ptrA->zE, memPtrA );
return bbs_SIZEOF16( *ptrA );
}
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uint32 bts_Int16Vec3D_norm2( const struct bts_Int16Vec3D* ptrA )
{
return ( int32 ) ptrA->xE * ptrA->xE +
( int32 ) ptrA->yE * ptrA->yE +
( int32 ) ptrA->zE * ptrA->zE;
}
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uint16 bts_Int16Vec3D_norm( const struct bts_Int16Vec3D* ptrA )
{
return bbs_sqrt32( ( int32 ) ptrA->xE * ptrA->xE +
( int32 ) ptrA->yE * ptrA->yE +
( int32 ) ptrA->zE * ptrA->zE );
}
/* ------------------------------------------------------------------------- */
void bts_Int16Vec3D_normalize( struct bts_Int16Vec3D* ptrA, int32 bbpA )
{
int32 normL = bbs_sqrt32( ( int32 ) ptrA->xE * ptrA->xE +
( int32 ) ptrA->yE * ptrA->yE +
( int32 ) ptrA->zE * ptrA->zE );
int32 xL = ( ( int32 )ptrA->xE << 16 ) / normL;
int32 yL = ( ( int32 )ptrA->yE << 16 ) / normL;
int32 zL = ( ( int32 )ptrA->zE << 16 ) / normL;
ptrA->xE = xL >> ( 16 - bbpA );
ptrA->yE = yL >> ( 16 - bbpA );
ptrA->zE = zL >> ( 16 - bbpA );
}
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struct bts_Int16Vec3D bts_Int16Vec3D_normalized( const struct bts_Int16Vec3D* ptrA, int32 bbpA )
{
struct bts_Int16Vec3D vecL = *ptrA;
bts_Int16Vec3D_normalize( &vecL, bbpA );
return vecL;
}
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