-fno-trapping-math(假设浮点运算无法生成用户可见的陷阱来编译代码。这些陷阱包括被零除、溢出、下溢、不精确结果和无效操作) -fassociative-math(允许在一系列浮点运算中重新关联操作数)和-freciprocal-math(如果可以进行优化,则允许使用值的倒数而不是除以该值) -ffinite-math-only:允许对假设参数和结果不是 NaN ...
gcc, simd intrinsics and fast-math conceptshttps://stackoverflow.com/questions/4966489/gcc-simd-intrinsics-and-fast-math-concepts What does gcc's ffast-math actually do?https://stackoverflow.com/questions/7420665/what-does-gccs-ffast-math-actually-do?noredirect=1&lq=1 Why doesn't GCC optimi...
gcc:使用选项 -ffast-math -O2 -m32 clang:使用选项 -ffast-math -O2 -m32 数组长度为 28884 = 7221 * 4; cpu 是 core i5,3.5Ghz 测试结果: win10:平台,vc120 (0.06x ms),gcc10 (0.06x ms),clang11 (0.09x ms) centos8:平台,gcc8 (0.06x ms),gcc10 (0.06x ms),clang11 (0.09x ms) ...
For GCC, ‘ENABLE_FAST_MATHsets-ffast-math` option. opencv/cmake/OpenCVCompilerOptions.cmake Lines 125 to 130 in 904dbe9 elseif(CV_GCC OR CV_CLANG) if(ENABLE_FAST_MATH) add_extra_compiler_option(-ffast-math) add_extra_compiler_option(-fno-finite-math-only) endif() endif(...
fastmath-2023.01.22_0+gcc12.darwin_10.x86_64.tbz2.rmd160512.0 B2023-01-23 07:07 fastmath-2023.01.22_0+gcc12.darwin_11.x86_64.tbz216.1 KB2023-01-23 07:09 fastmath-2023.01.22_0+gcc12.darwin_11.x86_64.tbz2.rmd160512.0 B2023-01-23 07:09 ...
分别使用marvell(gcc4.1.1) 以及 maemo 编译器(codesourcery 2005q3-2,gcc3.4.4)并使用不同的编译选项进行测试对比。 程序运行在 PXA310 624M CPU 下。 marvell 编译器 + -ffast-math arm-iwmmxt-Linux-gnueabi-gcc float.c -o float1 arm-iwmmxt-linux-gnueabi-strip float1 ...
import Numeric.FastMath.NaN How complete are the optimizations? There are still some optimizations that gcc's-ffast-mathflag supports that this library doesn't support.This is mostly due to limitations in the wayRULESpragmas work. For example,constant foldingcannot be implemented withRULES. Instea...
As far as I know, -ffast-math is an option for the gcc compiler, not the Intel Fortran compiler. It looks like your MPI installation is configured to use ifort instead of gfortran, you should either change that or switch on the appropriate flags for the ifort comp...
分别使用marvell(gcc4.1.1) 以及 maemo 编译器(codesourcery 2005q3-2,gcc3.4.4)并使用不同的编译选项进行测试对比。 程序运行在 PXA310 624M CPU 下。 marvell 编译器 + -ffast-math arm-iwmmxt-Linux-gnueabi-gcc float.c -o float1 arm-iwmmxt-linux-gnueabi-strip float1 ...
Reintroduce fast math functions (#7495) Browse files * Add fast fma functions * Use fast fma functions * Add fast pow function * Use fast pow function * Fix build * Remove fastFma * Avoid UB in fastPow On GCC with -O1 or -O2 optimizations, this new implementation generates identical ...