float32_mul
[MUF_CODE >> 20] = float32_mul,
[FML_CODE >> 20] = float32_mul,
float32 float32_mul( struct roundingData *, float32, float32 );
hx = float32_mul(hx, hy);
extern unsigned long int float32_mul(unsigned long int a, unsigned long int b);
float32 float32_mul(float32 a, float32 b);