utils.hpp File Reference

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Macros
#define	ceili(x, y)   (((x)+(y)-1)/(y))
	integer division x/y with ceiling More...
#define	roundf_fast(X)   (floorf_fast((X) + 0.5f))
	rounding (nearest integer) More...

Functions
int	floorf_fast (float x)
float	modf (float x, float y)

Macro Definition Documentation

ceili

#define ceili	(		x,
			y
	)		(((x)+(y)-1)/(y))

integer division x/y with ceiling

Definition at line 21 of file utils.hpp.

roundf_fast

#define roundf_fast

(

X

)

(floorf_fast((X) + 0.5f))

rounding (nearest integer)

Definition at line 22 of file utils.hpp.

Function Documentation

floorf_fast()

int floorf_fast ( float  x )

inline

Definition at line 26 of file utils.hpp.

                                {
    int i = (int)x;
    return i - (i > x);
}

modf()

float modf ( float  x, float  y  )

inline

Definition at line 32 of file utils.hpp.

                                    {
    return x - y * (int)(x / y);
}