BGBDY_API mat4 dtyMat4Add(mat4 a, mat4 b)
{
mat4 c;
vfvec4(c.v+ 0, v4add(vec4vf(a.v+ 0), vec4vf(b.v+ 0)));
vfvec4(c.v+ 4, v4add(vec4vf(a.v+ 4), vec4vf(b.v+ 4)));
vfvec4(c.v+ 8, v4add(vec4vf(a.v+ 8), vec4vf(b.v+ 8)));
vfvec4(c.v+12, v4add(vec4vf(a.v+12), vec4vf(b.v+12)));
#if 0
c.v[ 0]=a.v[ 0]+b.v[ 0];
c.v[ 1]=a.v[ 1]+b.v[ 1];
c.v[ 2]=a.v[ 2]+b.v[ 2];
c.v[ 3]=a.v[ 3]+b.v[ 3];
c.v[ 4]=a.v[ 4]+b.v[ 4];
c.v[ 5]=a.v[ 5]+b.v[ 5];
c.v[ 6]=a.v[ 6]+b.v[ 6];
c.v[ 7]=a.v[ 7]+b.v[ 7];
c.v[ 8]=a.v[ 8]+b.v[ 8];
c.v[ 9]=a.v[ 9]+b.v[ 9];
c.v[10]=a.v[10]+b.v[10];
c.v[11]=a.v[11]+b.v[11];
c.v[12]=a.v[12]+b.v[12];
c.v[13]=a.v[13]+b.v[13];
c.v[14]=a.v[14]+b.v[14];
c.v[15]=a.v[15]+b.v[15];
#endif
return(c);
}
/* ========================================================================= */
local inline unsigned long vector_chop(unsigned long x)
{
unsigned long y;
y = v4shl(x, 16);
y = v4shru(y, 16);
x = v4shru(x, 16);
y = v4sub(y, x);
x = v4shl(x, 4);
x = v4add(x, y);
return x;
}
BGBDY_API mat2 dtyMat2Add(mat2 a, mat2 b)
{
mat2 c;
vfvec4(c.v, v4add(vec4vf(a.v), vec4vf(b.v)));
// c.v[0]=a.v[0]+b.v[0];
// c.v[1]=a.v[1]+b.v[1];
// c.v[2]=a.v[2]+b.v[2];
// c.v[3]=a.v[3]+b.v[3];
return(c);
}
BGBDY_API mat3 dtyMat3Add(mat3 a, mat3 b)
{
mat3 c;
vfvec4(c.v+0, v4add(vec4vf(a.v+0), vec4vf(b.v+0)));
vfvec4(c.v+4, v4add(vec4vf(a.v+4), vec4vf(b.v+4)));
vfvec4(c.v+8, v4add(vec4vf(a.v+8), vec4vf(b.v+8)));
#if 0
c.v[ 0]=a.v[ 0]+b.v[ 0];
c.v[ 1]=a.v[ 1]+b.v[ 1];
c.v[ 2]=a.v[ 2]+b.v[ 2];
c.v[ 4]=a.v[ 4]+b.v[ 4];
c.v[ 5]=a.v[ 5]+b.v[ 5];
c.v[ 6]=a.v[ 6]+b.v[ 6];
c.v[ 8]=a.v[ 8]+b.v[ 8];
c.v[ 9]=a.v[ 9]+b.v[ 9];
c.v[10]=a.v[10]+b.v[10];
#endif
return(c);
}
BGBDY_API mat2 dtyMat2Mul(mat2 a, mat2 b)
{
vec4 a0, a1, b0, b1, t;
mat2 c;
t=vec4vf(a.v); a0=v4shuf(t, 0xA0); a1=v4shuf(t, 0xF5);
t=vec4vf(b.v); b0=v4shuf(t, 0x44); b1=v4shuf(t, 0x66);
t=v4add(v4mul(a0, b0), v4mul(a1, b1));
vfvec4(c.v, t);
// c.v[0]=a.v[0]*b.v[0]+a.v[1]*b.v[2];
// c.v[1]=a.v[0]*b.v[1]+a.v[1]*b.v[3];
// c.v[2]=a.v[2]*b.v[0]+a.v[3]*b.v[2];
// c.v[3]=a.v[2]*b.v[1]+a.v[3]*b.v[3];
return(c);
}