git: 9front

ref: 5efe85a961d95f1b7935fe830933c84b5bf7c7b3
dir: /sys/src/libgeometry/utils.c/

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#include <u.h>
#include <libc.h>
#include <geometry.h>

double
flerp(double a, double b, double t)
{
	return a + (b - a)*t;
}

double
fberp(double a, double b, double c, Point3 bc)
{
	return dotvec3(Vec3(a,b,c), bc);
}

double
fclamp(double n, double min, double max)
{
	return n < min? min: n > max? max: n;
}