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hl2sdk/mathlib/halton.cpp
2013-06-26 15:22:04 -07:00

31 lines
588 B
C++

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=====================================================================================//
#include <halton.h>
HaltonSequenceGenerator_t::HaltonSequenceGenerator_t(int b)
{
base=b;
fbase=(float) b;
seed=1;
}
float HaltonSequenceGenerator_t::GetElement(int elem)
{
int tmpseed=seed;
float ret=0.0;
float base_inv=1.0/fbase;
while(tmpseed)
{
int dig=tmpseed % base;
ret+=((float) dig)*base_inv;
base_inv/=fbase;
tmpseed/=base;
}
return ret;
}