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What is the difference between MOV and LEA?
... than shifts, though.) See agner.org/optimize and stackoverflow.com/tags/x86/info.
– Peter Cordes
Apr 16 '18 at 3:05
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Difference between -pthread and -lpthread while compiling
...ble on platforms that the GCC docs don't explicitly list it for (such as i386 and x86-64) - you should use it when available.
Also note that other similar options have been used by GCC, such as -pthreads (listed as a synonym for -pthread on Solaris 2) and -mthread (for MinGW-specific thread support...
Is gettimeofday() guaranteed to be of microsecond resolution?
... REALLY FREAKING OLD kernels WTF do you mean?
– Spudd86
Jun 14 '10 at 20:32
clock_gettime was included in POSIX in 200...
Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
...to modify the contents of the array, the behavior is undefined.
GCC 4.8 x86-64 ELF implementation
Program:
#include <stdio.h>
int main(void) {
char *s = "abc";
printf("%s\n", s);
return 0;
}
Compile and decompile:
gcc -ggdb -std=c99 -c main.c
objdump -Sr main.o
Output con...
Why does GCC generate such radically different assembly for nearly the same C code?
... particular 4.5 vs 4.6 vs 4.7, etc? and for different target processors, x86, arm, mips, etc or different flavors of x86 if that is the native compiler you use, 32 bit vs 64 bit, etc? And then llvm (clang) for different targets?
Mystical has done an excellent job in the thought process required t...
.NET 4.0 build issues on CI server
...ating systems: Windows 7, Windows Server 2003 R2 Standard Edition (32-bit x86), Windows Server 2003 R2 Standard x64 Edition , Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP Service Pack 3
– Aligma
Nov 7 '12 at 23:17
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Fastest way to determine if an integer's square root is an integer
...orks ~35% faster than your 6bits+Carmack+sqrt code, at least with my CPU (x86) and programming language (C/C++). Your results may vary, especially because I don't know how the Java factor will play out.
My approach is threefold:
First, filter out obvious answers. This includes negative numbers ...
How to change the color of an svg element?
...r-green{
filter: invert(48%) sepia(79%) saturate(2476%) hue-rotate(86deg) brightness(118%) contrast(119%);
}
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Bootstrap: Open Another Modal in Modal
...
86
My solution does not close the lower modal, but truly stacks on top of it. It preserves scroll...
Aliases in Windows command prompt
... have to write the whole directory anymore.
DOSKEY gsp="C:\Program Files (x86)\Sketchpad5\GSP505en.exe"
DOSKEY alias=notepad %USERPROFILE%\Dropbox\alias.cmd
:: Common directories
DOSKEY dropbox=cd "%USERPROFILE%\Dropbox\$*"
DOSKEY research=cd %USERPROFILE%\Dropbox\Research\
Note that the $* s...