((function outerProduct
   (signature mat2
     (parameters
       (declare (in) vec2 u)
       (declare (in) vec2 v))
     ((declare () mat2 m)
      (assign (xy) (array_ref (var_ref m) (constant int (0))) (expression vec2 * (var_ref u) (swiz x (var_ref v))))
      (assign (xy) (array_ref (var_ref m) (constant int (1))) (expression vec2 * (var_ref u) (swiz y (var_ref v))))
      (return (var_ref m))))

   (signature mat2x3
     (parameters
       (declare (in) vec3 u)
       (declare (in) vec2 v))
     ((declare () mat2x3 m)
      (assign (xyz) (array_ref (var_ref m) (constant int (0))) (expression vec3 * (var_ref u) (swiz x (var_ref v))))
      (assign (xyz) (array_ref (var_ref m) (constant int (1))) (expression vec3 * (var_ref u) (swiz y (var_ref v))))
      (return (var_ref m))))

   (signature mat2x4
     (parameters
       (declare (in) vec4 u)
       (declare (in) vec2 v))
     ((declare () mat2x4 m)
      (assign (xyzw) (array_ref (var_ref m) (constant int (0))) (expression vec4 * (var_ref u) (swiz x (var_ref v))))
      (assign (xyzw) (array_ref (var_ref m) (constant int (1))) (expression vec4 * (var_ref u) (swiz y (var_ref v))))
      (return (var_ref m))))

   (signature mat3x2
     (parameters
       (declare (in) vec2 u)
       (declare (in) vec3 v))
     ((declare () mat3x2 m)
      (assign (xy) (array_ref (var_ref m) (constant int (0))) (expression vec2 * (var_ref u) (swiz x (var_ref v))))
      (assign (xy) (array_ref (var_ref m) (constant int (1))) (expression vec2 * (var_ref u) (swiz y (var_ref v))))
      (assign (xy) (array_ref (var_ref m) (constant int (2))) (expression vec2 * (var_ref u) (swiz z (var_ref v))))
      (return (var_ref m))
 ))

   (signature mat3
     (parameters
       (declare (in) vec3 u)
       (declare (in) vec3 v))
     ((declare () mat3 m)
      (assign (xyz) (array_ref (var_ref m) (constant int (0))) (expression vec3 * (var_ref u) (swiz x (var_ref v))))
      (assign (xyz) (array_ref (var_ref m) (constant int (1))) (expression vec3 * (var_ref u) (swiz y (var_ref v))))
      (assign (xyz) (array_ref (var_ref m) (constant int (2))) (expression vec3 * (var_ref u) (swiz z (var_ref v))))
      (return (var_ref m))))

   (signature mat3x4
     (parameters
       (declare (in) vec4 u)
       (declare (in) vec3 v))
     ((declare () mat3x4 m)
      (assign (xyzw) (array_ref (var_ref m) (constant int (0))) (expression vec4 * (var_ref u) (swiz x (var_ref v))))
      (assign (xyzw) (array_ref (var_ref m) (constant int (1))) (expression vec4 * (var_ref u) (swiz y (var_ref v))))
      (assign (xyzw) (array_ref (var_ref m) (constant int (2))) (expression vec4 * (var_ref u) (swiz z (var_ref v))))
      (return (var_ref m))))

   (signature mat4x2
     (parameters
       (declare (in) vec2 u)
       (declare (in) vec4 v))
     ((declare () mat4x2 m)
      (assign (xy) (array_ref (var_ref m) (constant int (0))) (expression vec2 * (var_ref u) (swiz x (var_ref v))))
      (assign (xy) (array_ref (var_ref m) (constant int (1))) (expression vec2 * (var_ref u) (swiz y (var_ref v))))
      (assign (xy) (array_ref (var_ref m) (constant int (2))) (expression vec2 * (var_ref u) (swiz z (var_ref v))))
      (assign (xy) (array_ref (var_ref m) (constant int (3))) (expression vec2 * (var_ref u) (swiz w (var_ref v))))
      (return (var_ref m))))

   (signature mat4x3
     (parameters
       (declare (in) vec3 u)
       (declare (in) vec4 v))
     ((declare () mat4x3 m)
      (assign (xyz) (array_ref (var_ref m) (constant int (0))) (expression vec3 * (var_ref u) (swiz x (var_ref v))))
      (assign (xyz) (array_ref (var_ref m) (constant int (1))) (expression vec3 * (var_ref u) (swiz y (var_ref v))))
      (assign (xyz) (array_ref (var_ref m) (constant int (2))) (expression vec3 * (var_ref u) (swiz z (var_ref v))))
      (assign (xyz) (array_ref (var_ref m) (constant int (3))) (expression vec3 * (var_ref u) (swiz w (var_ref v))))
      (return (var_ref m))))

   (signature mat4
     (parameters
       (declare (in) vec4 u)
       (declare (in) vec4 v))
     ((declare () mat4 m)
      (assign (xyzw) (array_ref (var_ref m) (constant int (0))) (expression vec4 * (var_ref u) (swiz x (var_ref v))))
      (assign (xyzw) (array_ref (var_ref m) (constant int (1))) (expression vec4 * (var_ref u) (swiz y (var_ref v))))
      (assign (xyzw) (array_ref (var_ref m) (constant int (2))) (expression vec4 * (var_ref u) (swiz z (var_ref v))))
      (assign (xyzw) (array_ref (var_ref m) (constant int (3))) (expression vec4 * (var_ref u) (swiz w (var_ref v))))
      (return (var_ref m))))
))
