Common math macros

Common math macros. More...

Macros
#define	MAX(x, y)   (((x) > (y)) ? (x) : (y))
#define	MIN(x, y)   (((x) < (y)) ? (x) : (y))
#define	CLAMP(x, low, high)   MIN((high), MAX((low), (x)))
#define	ROUND_UP(number, multiple)    ((((uint64_t)(number) + (uint64_t)(multiple) - 1) / (uint64_t)(multiple)) * (uint64_t)(multiple))
#define	ROUND_DOWN(number, multiple)   (((uint64_t)(number) / (uint64_t)(multiple)) * (uint64_t)(multiple))
#define	LERP_INT(start, end, t, minT, maxT)   (((start) * ((maxT) - (t))) + ((end) * ((t) - (minT)))) / ((maxT) - (minT))

Detailed Description

Common math macros.

The sys/math.h header provides common math macros for operations such as clamping, rounding, and linear interpolation.

Macro Definition Documentation

CLAMP

#define CLAMP	(		x,
			low,
			high
	)		MIN((high), MAX((low), (x)))

Definition at line 17 of file math.h.

LERP_INT

#define LERP_INT	(		start,
			end,
			t,
			minT,
			maxT
	)		(((start) * ((maxT) - (t))) + ((end) * ((t) - (minT)))) / ((maxT) - (minT))

Definition at line 23 of file math.h.

MAX

#define MAX	(		x,
			y
	)		(((x) > (y)) ? (x) : (y))

Definition at line 15 of file math.h.

MIN

#define MIN	(		x,
			y
	)		(((x) < (y)) ? (x) : (y))

Definition at line 16 of file math.h.

ROUND_DOWN

#define ROUND_DOWN	(		number,
			multiple
	)		(((uint64_t)(number) / (uint64_t)(multiple)) * (uint64_t)(multiple))

Definition at line 21 of file math.h.

ROUND_UP

#define ROUND_UP	(		number,
			multiple
	)		((((uint64_t)(number) + (uint64_t)(multiple) - 1) / (uint64_t)(multiple)) * (uint64_t)(multiple))

Definition at line 19 of file math.h.