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c++ Programming Glossary: mmx

C++ string comparison in one clock cycle

http://stackoverflow.com/questions/1128096/c-string-comparison-in-one-clock-cycle

two strings in one processor cycle using some sort of MMX assembler instruction Or is strcmp implementation already based.. takes 1 cycle. Your best bet would be to use the MMX 64 bit compare instructions see this page for an example . However..

Floating point vs integer calculations on modern hardware

http://stackoverflow.com/questions/2550281/floating-point-vs-integer-calculations-on-modern-hardware

you are using single precision math . Note Using the old MMX instructions would actually slow down programs because those..

Is using double faster than float?

http://stackoverflow.com/questions/3426165/is-using-double-faster-than-float

to perform FP operations the SSE instructions good old MMX was integers only especially suitable for simple ops on lot..

Brute-force, single-threaded prime factorization

http://stackoverflow.com/questions/3918968/brute-force-single-threaded-prime-factorization

some excellent solutions so far be sure to check out his MMX solution near the bottom as well. c algorithm prime factoring..

How fast is D compared to C++?

http://stackoverflow.com/questions/5142366/how-fast-is-d-compared-to-c

dmd nor gdc inlined scalar_product but g gdc did emit MMX instructions so they might be auto vectorizing the loop. share..

How to check if a CPU supports the SSE3 instruction set?

http://stackoverflow.com/questions/6121792/how-to-check-if-a-cpu-supports-the-sse3-instruction-set

from one of my CPU dispatchers and covers everything from MMX all the way to XOP. First you need to access the CPUID instruction.. Then you can run the following code int x64 false int MMX false int SSE false int SSE2 false int SSE3 false int SSSE3.. 0 Detect Instruction Set if nIds 1 cpuid info 0x00000001 MMX info 3 int 1 23 0 SSE info 3 int 1 25 0 SSE2 info 3 int 1 26..

Is inline assembly language slower than native C++ code?

http://stackoverflow.com/questions/9601427/is-inline-assembly-language-slower-than-native-c-code

said modern compilers sometimes can automatically use some MMX SIMDx instructions by themselves and if you don't use them you..