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BitHacksOperations/C/TestBitHacksOperationsC/TestBitHacksOperationsC.cpp
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BitHacksOperations/C/TestBitHacksOperationsC/TestBitHacksOperationsC.vcxproj
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BitHacksOperations/C/TestBitHacksOperationsC/TestBitHacksOperationsC.vcxproj.user
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/* | ||
** bithacks.h - bit hacks macros. v1.0 | ||
** | ||
** Created by Peter Krumins ([email protected], @pkrumins on twitter) | ||
** www.catonmat.net -- good coders code, great coders reuse | ||
** | ||
** This file is explained in the following article: | ||
** www.catonmat.net/blog/bit-hacks-header-file | ||
** | ||
** Released under the MIT license. | ||
* | ||
** https://catonmat.net/low-level-bit-hacks | ||
*/ | ||
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#ifndef BITHACKS_H | ||
#define BITHACKS_H | ||
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#define HEXIFY(X) 0x##X##LU | ||
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#define B8IFY(Y) (((Y&0x0000000FLU)?1:0) + \ | ||
((Y&0x000000F0LU)?2:0) + \ | ||
((Y&0x00000F00LU)?4:0) + \ | ||
((Y&0x0000F000LU)?8:0) + \ | ||
((Y&0x000F0000LU)?16:0) + \ | ||
((Y&0x00F00000LU)?32:0) + \ | ||
((Y&0x0F000000LU)?64:0) + \ | ||
((Y&0xF0000000LU)?128:0)) | ||
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#define B8(Z) ((unsigned char)B8IFY(HEXIFY(Z))) | ||
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/* | ||
** Bit hack routines. See the following article for explanation: | ||
** http://www.catonmat.net/blog/low-level-bit-hacks-you-absolutely-must-know | ||
** | ||
*/ | ||
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/* test if x is even */ | ||
#define B_EVEN(x) (((x)&1)==0) | ||
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/* test if x is odd */ | ||
#define B_ODD(x) (!B_EVEN((x))) | ||
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/* test if n-th bit in x is set */ | ||
#define B_IS_SET(x, n) (((x) & (1<<(n)))?1:0) | ||
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/* set n-th bit in x */ | ||
#define B_SET(x, n) ((x) |= (1<<(n))) | ||
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/* unset n-th bit in x */ | ||
#define B_UNSET(x, n) ((x) &= ~(1<<(n))) | ||
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/* toggle n-th bit in x */ | ||
#define B_TOGGLE(x, n) ((x) ^= (1<<(n))) | ||
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/* turn off right-most 1-bit in x */ | ||
#define B_TURNOFF_1(x) ((x) &= ((x)-1)) | ||
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/* isolate right-most 1-bit in x */ | ||
#define B_ISOLATE_1(x) ((x) &= (-(x))) | ||
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/* right-propagate right-most 1-bit in x */ | ||
#define B_PROPAGATE_1(x) ((x) |= ((x)-1)) | ||
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/* isolate right-most 0-bit in x */ | ||
#define B_ISOLATE_0(x) ((x) = ~(x) & ((x)+1)) | ||
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/* turn on right-most 0-bit in x */ | ||
#define B_TURNON_0(x) ((x) |= ((x)+1)) | ||
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/* | ||
** more bit hacks coming as soon as I post an article on advanced bit hacks | ||
*/ | ||
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#endif | ||
|
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// pch.cpp: Quelldatei, die dem vorkompilierten Header entspricht | ||
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#include "pch.h" | ||
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// Bei der Verwendung vorkompilierter Header ist diese Quelldatei für eine erfolgreiche Kompilierung erforderlich. |
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// pch.h: Dies ist eine vorkompilierte Headerdatei. | ||
// Die unten aufgeführten Dateien werden nur einmal kompiliert, um die Buildleistung für zukünftige Builds zu verbessern. | ||
// Dies wirkt sich auch auf die IntelliSense-Leistung aus, Codevervollständigung und viele Features zum Durchsuchen von Code eingeschlossen. | ||
// Die hier aufgeführten Dateien werden jedoch ALLE neu kompiliert, wenn mindestens eine davon zwischen den Builds aktualisiert wird. | ||
// Fügen Sie hier keine Dateien hinzu, die häufig aktualisiert werden sollen, da sich so der Leistungsvorteil ins Gegenteil verkehrt. | ||
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#ifndef PCH_H | ||
#define PCH_H | ||
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// Fügen Sie hier Header hinzu, die vorkompiliert werden sollen. | ||
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#endif //PCH_H |
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