int16_t __int16_mul_asgn(int16_t *muliplicand,
int16_t multiplier);__int16_mul_asgn updates the 16-bit signed integer pointed to by multiplicand by multiplying it by multiplier. The product is returned as the result. As only the lower 16 bits of the product are returned, __int16_mul_asgn returns correct products, modulo 16 bits, for both signed and unsigned arguments.