this the MUL routine for the prime field and large numbers for ECC or RSA algorithms. with IAR version 5 or above.-this is the MUL routine for the prime field and large numbers for ECC or RSA algorithms. with IAR version 5 or above.

RS的编码就是计算信息码符多项式，除以校验码生成多项式之后的余数；rs编码的基本实现，包括add,mul函数等；-RS coding is to calculate the information symbol code polynomial, divided by the check code generator polynomial after the remainder rs basically coding, including add, mul function, etc.

karatsuba mul for E-karatsuba mul for ECC