丹阳网站建设价格_怎么上国外购物网站_营销推广的方法有哪些_重庆网站seo服务

Multiply-Add multiplies two register values, adds a third register value, and writes the result to the destination register.

乘法-加法将两个寄存器值相乘，将第三个寄存器值相加，并将结果写入目标寄存器。

32-bit variant
    Applies when sf == 0.
    MADD <Wd>, <Wn>, <Wm>, <Wa>

64-bit variant
    Applies when sf == 1.
    MADD <Xd>, <Xn>, <Xm>, <Xa>

Decode for all variants of this encoding
 integer d = UInt(Rd); 
 integer n = UInt(Rn); 
 integer m = UInt(Rm); 
 integer a = UInt(Ra); 
 integer destsize = if sf == '1' then 64 else 32; 

Operation
 bits(destsize) operand1 = X[n]; 
 bits(destsize) operand2 = X[m]; 
 bits(destsize) operand3 = X[a]; 
  
 integer result; 

 result = UInt(operand3) + (UInt(operand1) * UInt(operand2)); 
  
 X[d] = result<destsize-1:0>;