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← Revision 3 as of 2013-08-10 19:55:41 ⇥
Size: 1190
Comment: Added header in example because function not included with SDL.h.
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| #include "SDL_bits.h" |
SDL_MostSignificantBitIndex32
Use this function to get the index of the most significant (set) bit in a 32-bit number. This is also the same as the base 2 logarithm of the number.
Contents
Syntax
int SDL_MostSignificantBitIndex32(Uint32 x)
Function Parameters
x |
the number to find the MSB of |
Return Value
Returns the index of the most significant bit of x, or -1 if x is 0.
Code Examples
#include "SDL_bits.h"
if (bitmask) {
int index = SDL_MostSignificantBitIndex32(bitmask);
}
Remarks
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