version2/vectorclass.h at master · vectorclass/version2 · GitHub

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/**************************** vectorclass.h ********************************
* Author: Agner Fog
* Date created: 2012-05-30
* Last modified: 2026-04-14
* Version: 2.02.03
* Project: vector class library
* Home: https://github.com/vectorclass
* Description:
* Header file defining vector classes as interface to intrinsic functions
* in x86 and x86-64 microprocessors with SSE2 and later instruction sets.
*
* Instructions:
* Use Gnu, Clang, Microsoft, or Intel C++ compiler. Compile for the desired
* instruction set, which must be at least SSE2. Specify the supported
* instruction set by a command line define, e.g. __SSE4_1__ if the
* compiler does not automatically do so.
* For detailed instructions, see vcl_manual.pdf
*
* Each vector object is represented internally in the CPU as a vector
* register with 128, 256 or 512 bits.
*
* This header file includes the appropriate header files depending on the
* selected instruction set.
*
* (c) Copyright 2012-2026 Agner Fog.
* Apache License version 2.0 or later.
******************************************************************************/

#ifndefVECTORCLASS_H
#defineVECTORCLASS_H 20203

// Maximum vector size, bits. Allowed values are 128, 256, 512
#ifndefMAX_VECTOR_SIZE
#defineMAX_VECTOR_SIZE 512
#endif

// Determine instruction set, and define platform-dependent functions
#include"instrset.h"// Select supported instruction set

#ifINSTRSET<2// instruction set SSE2 is the minimum
#error Please compile for the SSE2 instruction set or higher
#else

// Select appropriate .h files depending on instruction set
#include"vectori128.h"// 128-bit integer vectors
#include"vectorf128.h"// 128-bit floating point vectors

#ifMAX_VECTOR_SIZE >= 256
#ifINSTRSET >= 8
#include"vectori256.h"// 256-bit integer vectors, requires AVX2 instruction set
#else
#include"vectori256e.h"// 256-bit integer vectors, emulated
#endif// INSTRSET >= 8
#ifINSTRSET >= 7
#include"vectorf256.h"// 256-bit floating point vectors, requires AVX instruction set
#else
#include"vectorf256e.h"// 256-bit floating point vectors, emulated
#endif// INSTRSET >= 7
#endif// MAX_VECTOR_SIZE >= 256

#ifMAX_VECTOR_SIZE >= 512
#ifINSTRSET >= 9
#include"vectori512.h"// 512-bit vectors of 32 and 64 bit integers, requires AVX512F instruction set
#include"vectorf512.h"// 512-bit floating point vectors, requires AVX512F instruction set
#else
#include"vectori512e.h"// 512-bit integer vectors, emulated
#include"vectorf512e.h"// 512-bit floating point vectors, emulated
#endif// INSTRSET >= 9
#ifINSTRSET >= 10
#include"vectori512s.h"// 512-bit vectors of 8 and 16 bit integers, requires AVX512BW instruction set
#else
#include"vectori512se.h"// 512-bit vectors of 8 and 16 bit integers, emulated
#endif
#endif// MAX_VECTOR_SIZE >= 512

#include"vector_convert.h"// conversion between different vector sizes, and common templates

#endif// INSTRSET >= 2


#else// VECTORCLASS_H

#ifVECTORCLASS_H<20000
#error Mixed versions of vector class library
#endif

#endif// VECTORCLASS_H