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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef bts_INT16VEC3D_EM_H
     18 #define bts_INT16VEC3D_EM_H
     19 
     20 /* ---- includes ----------------------------------------------------------- */
     21 
     22 #include "b_BasicEm/Context.h"
     23 #include "b_BasicEm/Basic.h"
     24 
     25 /* ---- related objects  --------------------------------------------------- */
     26 
     27 /* ---- typedefs ----------------------------------------------------------- */
     28 
     29 /* ---- constants ---------------------------------------------------------- */
     30 
     31 /* ---- object definition -------------------------------------------------- */
     32 
     33 /** 3d vector */
     34 struct bts_Int16Vec3D
     35 {
     36 
     37 	/* ---- private data --------------------------------------------------- */
     38 
     39 	/* ---- public data ---------------------------------------------------- */
     40 
     41 	/** x component */
     42 	int16 xE;
     43 
     44 	/** y component */
     45 	int16 yE;
     46 
     47 	/** z component */
     48 	int16 zE;
     49 };
     50 
     51 /* ---- associated objects ------------------------------------------------- */
     52 
     53 /* ---- external functions ------------------------------------------------- */
     54 
     55 /* ---- \ghd{ constructor/destructor } ------------------------------------- */
     56 
     57 /* ---- \ghd{ operators } -------------------------------------------------- */
     58 
     59 /* ---- \ghd{ query functions } -------------------------------------------- */
     60 
     61 /* ---- \ghd{ modify functions } ------------------------------------------- */
     62 
     63 /* ---- \ghd{ memory I/O } ------------------------------------------------- */
     64 
     65 /** size object needs when written to memory */
     66 uint32 bts_Int16Vec3D_memSize( struct bbs_Context* cpA,
     67 							   const struct bts_Int16Vec3D* ptrA );
     68 
     69 /** writes object to memory; returns number of bytes written */
     70 uint32 bts_Int16Vec3D_memWrite( struct bbs_Context* cpA,
     71 							    const struct bts_Int16Vec3D* ptrA,
     72 								uint16* memPtrA );
     73 
     74 /** reads object from memory; returns number of bytes read */
     75 uint32 bts_Int16Vec3D_memRead( struct bbs_Context* cpA,
     76 							   struct bts_Int16Vec3D* ptrA,
     77 							   const uint16* memPtrA );
     78 
     79 /* ---- \ghd{ exec functions } --------------------------------------------- */
     80 
     81 /** returns square norm of vector */
     82 uint32 bts_Int16Vec3D_norm2( const struct bts_Int16Vec3D* ptrA );
     83 
     84 /** returns norm of vector */
     85 uint16 bts_Int16Vec3D_norm( const struct bts_Int16Vec3D* ptrA );
     86 
     87 /** normalizes vector; bbpA defines number of bits behind the point */
     88 void bts_Int16Vec3D_normalize( struct bts_Int16Vec3D* ptrA, int32 bbpA );
     89 
     90 /** returns normalized vector; bbpA defines number of bits behind the point */
     91 struct bts_Int16Vec3D bts_Int16Vec3D_normalized( const struct bts_Int16Vec3D* ptrA, int32 bbpA );
     92 
     93 #endif /* bts_INT16VEC3D_EM_H */
     94 
     95