FXdiv:C99C ++仅用于标头的库,用于通过定点乘除除-源码

上传者: 42131443 | 上传时间: 2021-02-02 16:37:13 | 文件大小: 14KB | 文件类型: ZIP
FXdiv 仅标头库,用于通过定点乘以逆除法 在现代CPU和GPU上,整数除法比乘法要慢几倍。 FXdiv实现了一种算法,用乘法和两次移位替换整数除法。 当应用程序执行相同除数的重复除法时,此算法可提高性能。 产品特点 uint32_t , uint64_t和size_t整数除法 仅标头的库,无需安装或构建 与C99,C ++,OpenCL和CUDA兼容 使用特定于平台的编译器内部函数以获得最佳性能 包含单元测试和微基准测试 例 # include /* Division of array by a constant: reference implementation */ void divide_array_c ( size_t length, uint32_t array[], uint32_t divisor) { for ( size_t i = 0 ; i < length; i++) { array[i] /= divisor; } } /* Division of array by a constant: implementati

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