75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
/* @(#)86 1.3 src/include/vec_literal.h, sw.includes, sdk_pub 10/11/05 16:00:27 */
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/* -------------------------------------------------------------- */
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/* (C) Copyright 2001,2005, */
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/* International Business Machines Corporation, */
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/* Sony Computer Entertainment Incorporated, */
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/* Toshiba Corporation. */
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/* */
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/* All Rights Reserved. */
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/* -------------------------------------------------------------- */
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/* PROLOG END TAG zYx */
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#ifndef _VEC_LITERAL_H_
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#define _VEC_LITERAL_H_
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/* This header files provides an abstraction for the various implementations
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* of vector literal construction. The two formats are:
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*
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* 1) Altivec styled using parenthesis
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* 2) C grammer friendly styled using curly braces
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*
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* The macro, VEC_LITERAL has been developed to provide some portability
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* in these two styles. To achieve true portability, user must specify all
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* elements of the vector being initialized. A single element can be provided
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* but only the first element guarenteed across both construction styles.
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*
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* The VEC_SPLAT_* macros have been provided for portability of vector literal
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* construction when all the elements of the vector contain the same value.
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*/
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#ifdef __SPU__
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#include <spu_intrinsics.h>
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#endif
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#ifdef __ALTIVEC_LITERAL_STYLE__
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/* Use altivec style.
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*/
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#define VEC_LITERAL(_type, ...) ((_type)(__VA_ARGS__))
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#define VEC_SPLAT_U8(_val) ((vector unsigned char)(_val))
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#define VEC_SPLAT_S8(_val) ((vector signed char)(_val))
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#define VEC_SPLAT_U16(_val) ((vector unsigned short)(_val))
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#define VEC_SPLAT_S16(_val) ((vector signed short)(_val))
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#define VEC_SPLAT_U32(_val) ((vector unsigned int)(_val))
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#define VEC_SPLAT_S32(_val) ((vector signed int)(_val))
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#define VEC_SPLAT_F32(_val) ((vector float)(_val))
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#define VEC_SPLAT_U64(_val) ((vector unsigned long long)(_val))
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#define VEC_SPLAT_S64(_val) ((vector signed long long)(_val))
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#define VEC_SPLAT_F64(_val) ((vector double)(_val))
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#else
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/* Use curly brace style.
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*/
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#define VEC_LITERAL(_type, ...) ((_type){__VA_ARGS__})
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#define VEC_SPLAT_U8(_val) ((vector unsigned char){_val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val})
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#define VEC_SPLAT_S8(_val) ((vector signed char){_val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val, _val})
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#define VEC_SPLAT_U16(_val) ((vector unsigned short){_val, _val, _val, _val, _val, _val, _val, _val})
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#define VEC_SPLAT_S16(_val) ((vector signed short){_val, _val, _val, _val, _val, _val, _val, _val})
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#define VEC_SPLAT_U32(_val) ((vector unsigned int){_val, _val, _val, _val})
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#define VEC_SPLAT_S32(_val) ((vector signed int){_val, _val, _val, _val})
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#define VEC_SPLAT_F32(_val) ((vector float){_val, _val, _val, _val})
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#define VEC_SPLAT_U64(_val) ((vector unsigned long long){_val, _val})
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#define VEC_SPLAT_S64(_val) ((vector signed long long){_val, _val})
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#define VEC_SPLAT_F64(_val) ((vector double){_val, _val})
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#endif
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#endif /* _VEC_LITERAL_H_ */
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