Some math routines for naev. More...

#include "nmath.h"
#include "array.h"
#include "log.h"
#include "rng.h"

Include dependency graph for nmath.c:

Functions
int	nmath_solve2Eq (double results[2], double a, double b, double c)
	Solves the equation: a * x^2 + b * x + c = 0.
double	max3 (double v1, double v2, double v3)
	Returns the maximum of 3 values.
double	min3 (double v1, double v2, double v3)
	Returns the minimum of 3 values.
void	arrayShuffle (void **array)
	Randomly sorts an array (array.h) of pointers in place with the Fisher-Yates shuffle.
int	rectOverlap (double x, double y, double w, double h, double x2, double y2, double w2, double h2)
	Checks whether two rectangles overlap at any point.
double	ease_SineInOut (double x)
	Simple symmetric sine-based easing.
double	ease_QuadraticInOut (double x)
	Simple symmetric quadratic easing.
double	ease_CubicInOut (double x)
	Simple symmetric cubic easing.

Detailed Description

Some math routines for naev.

Definition in file nmath.c.

Function Documentation

◆ arrayShuffle()

void arrayShuffle ( void ** array )

Randomly sorts an array (array.h) of pointers in place with the Fisher-Yates shuffle.

Definition at line 68 of file nmath.c.

◆ ease_CubicInOut()

double ease_CubicInOut ( double x )

Simple symmetric cubic easing.

Definition at line 122 of file nmath.c.

◆ ease_QuadraticInOut()

double ease_QuadraticInOut ( double x )

Simple symmetric quadratic easing.

Definition at line 112 of file nmath.c.

◆ ease_SineInOut()

double ease_SineInOut ( double x )

Simple symmetric sine-based easing.

Definition at line 104 of file nmath.c.

◆ max3()

double max3	(	double	v1,
		double	v2,
		double	v3 )

Returns the maximum of 3 values.

Definition at line 46 of file nmath.c.

◆ min3()

double min3	(	double	v1,
		double	v2,
		double	v3 )

Returns the minimum of 3 values.

Definition at line 56 of file nmath.c.

◆ nmath_solve2Eq()

int nmath_solve2Eq	(	double	results[2],
		double	a,
		double	b,
		double	c )

Solves the equation: a * x^2 + b * x + c = 0.

Parameters

results	Stores both results.
a	Quadratic parameter.
b	Linear parameter.
c	Offset coefficient.

Returns: 0 on success, -1 on error (or complex).

Definition at line 30 of file nmath.c.

◆ rectOverlap()

int rectOverlap	(	double	x,
		double	y,
		double	w,
		double	h,
		double	x2,
		double	y2,
		double	w2,
		double	h2 )

Checks whether two rectangles overlap at any point.