821 extern float3 __attribute__((overloadable)) cross(float3 lhs, float3 rhs) {  in FN_FUNC_FN()
823     r.x = lhs.y * rhs.z  - lhs.z * rhs.y;  in FN_FUNC_FN()
824     r.y = lhs.z * rhs.x  - lhs.x * rhs.z;  in FN_FUNC_FN()
825     r.z = lhs.x * rhs.y  - lhs.y * rhs.x;  in FN_FUNC_FN()
829 extern float4 __attribute__((overloadable)) cross(float4 lhs, float4 rhs) {  in cross()  argument
831     r.x = lhs.y * rhs.z  - lhs.z * rhs.y;  in cross()
832     r.y = lhs.z * rhs.x  - lhs.x * rhs.z;  in cross()
833     r.z = lhs.x * rhs.y  - lhs.y * rhs.x;  in cross()
838 extern float __attribute__((overloadable)) dot(float lhs, float rhs) {  in dot()  argument
839     return lhs * rhs;  in dot()
841 extern float __attribute__((overloadable)) dot(float2 lhs, float2 rhs) {  in dot()  argument
842     return lhs.x*rhs.x + lhs.y*rhs.y;  in dot()
844 extern float __attribute__((overloadable)) dot(float3 lhs, float3 rhs) {  in dot()  argument
845     return lhs.x*rhs.x + lhs.y*rhs.y + lhs.z*rhs.z;  in dot()
847 extern float __attribute__((overloadable)) dot(float4 lhs, float4 rhs) {  in dot()  argument
848     return lhs.x*rhs.x + lhs.y*rhs.y + lhs.z*rhs.z + lhs.w*rhs.w;  in dot()
864 extern float __attribute__((overloadable)) distance(float lhs, float rhs) {  in distance()  argument
865     return length(lhs - rhs);  in distance()
867 extern float __attribute__((overloadable)) distance(float2 lhs, float2 rhs) {  in distance()  argument
868     return length(lhs - rhs);  in distance()
870 extern float __attribute__((overloadable)) distance(float3 lhs, float3 rhs) {  in distance()  argument
871     return length(lhs - rhs);  in distance()
873 extern float __attribute__((overloadable)) distance(float4 lhs, float4 rhs) {  in distance()  argument
874     return length(lhs - rhs);  in distance()