public static double determinant(double2x2 m)
{
double a = m.c0.x;
double b = m.c1.x;
double c = m.c0.y;
double d = m.c1.y;
return(a * d - b * c);
}
public static double2x2 inverse(double2x2 m)
{
double a = m.c0.x;
double b = m.c1.x;
double c = m.c0.y;
double d = m.c1.y;
double det = a * d - b * c;
return(double2x2(d, -b, -c, a) * (1.0 / det));
}
public static uint2x2 uint2x2(double2x2 v)
{
return(new uint2x2(v));
}
public uint2x2(double2x2 v)
{
this.c0 = (uint2)v.c0;
this.c1 = (uint2)v.c1;
}
public static int2x2 int2x2(double2x2 v)
{
return(new int2x2(v));
}
public static uint2 hashwide(double2x2 v)
{
return((fold_to_uint(v.c0) * uint2(0xE99ED6F3u, 0x48125549u) +
fold_to_uint(v.c1) * uint2(0xEEE2123Bu, 0xE3AD9FE5u)) + 0xCE1CF8BFu);
}
public static uint hash(double2x2 v)
{
return(csum(fold_to_uint(v.c0) * uint2(0xFD80290Bu, 0x8B65ADB7u) +
fold_to_uint(v.c1) * uint2(0xDFF4F563u, 0x7069770Du)) + 0xD1224537u);
}
public static double2x2 transpose(double2x2 v)
{
return(double2x2(
v.c0.x, v.c0.y,
v.c1.x, v.c1.y));
}
public static float2x2 float2x2(double2x2 v)
{
return(new float2x2(v));
}
public float2x2(double2x2 v)
{
this.c0 = (float2)v.c0;
this.c1 = (float2)v.c1;
}
