sse

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What is the 4-way SIMD version of float selection on OSX Accelerate framework?

Using the Accelerate framework from OSX, you get access to 4-way SIMD functionality where you can operate on vector floats, vector ints and vector bools. It gives you 4-way divisions e.g. and also 4-w[详细]

2023-03-30 07:10 分类：问答
Where can I find an official reference listing the operation of SSE intrinsic functions?

Is开发者_Python百科 there an official reference listing the operation of the SSE intrinsic functions for GCC, i.e. the functions in the <*mmintrin.h> header files?As well as Intel\'s vol.2 PDF m[详细]

2023-03-30 04:11 分类：问答
SSE instructions in a buffer

If I have an instruction开发者_如何学C buffer for x86 is there an easy way to check if an instruction is an SSE instruction without having to check if the opcode is within the ranges for the SSE instr[详细]

2023-03-29 07:55 分类：问答
Add 32-bit words with saturation

Do you know any way to add with saturation 32-bit signed words using MMX/SSE assembler instructions? I can find开发者_开发知识库 8/16 bits versions but no 32-bit ones.You can emulate saturated signed[详细]

2023-03-29 06:22 分类：问答
How can I use SSE (and SSE2, SSE3, etc.) extensions when building with Visual C++?

I\'m now working in a small optimisation of a basic dot product function, by using SSE instructions in visual studio.[详细]

2023-03-28 11:32 分类：问答
SSE: _mm_mul_ps won't multiply 10001 with 10001 correctly but works fine for 10000 with 10000

I have a very simple program to multiply four numbers. It works fine when each of them is 10000 but does not if I change them to 10001. The result[详细]

2023-03-28 07:08 分类：问答
SSE data types and primitives

In most tutorials or code snippets on the net one sees the following: float *arr= (float*) _aligned_malloc(length * sizeof(float), 16);[详细]

2023-03-27 13:06 分类：问答
Fastest way to do horizontal SSE vector sum (or other reduction)

Given a vector of three (or four) floats. What is the fastest way to sum them? Is SSE (movaps, shuffle, add, movd) always faster than x87? Are the horizontal-add instructions in SSE3 worth it?[详细]

2023-03-27 06:58 分类：问答
C/C++ library for lazy evaluation of SIMD/SSE expressions

Libraries such as intel-MKL or amd-ACML provide easier interface to SIMD operations on vectors, but I want to chain several functions together. Are there readily available libraries where I can regist[详细]

2023-03-27 03:50 分类：问答
Using SSE 4.2 crc32 algorithm in c# ? Is it possible?

I have to calculate cr开发者_开发知识库c32 on a lot of files, and also huge files (several GB). I tried several algo found on the web like Damieng or this one, and it works, but it is slow (more than[详细]

2023-03-27 03:47 分类：问答