# -----------------------------------------------------------------------------
# A 64-bit function that returns the maximum value of its three 64-bit integer
# arguments.  The function has signature:
#
#   int64_t maxofthree(int64_t x, int64_t y, int64_t z)
#
# Note that the parameters have already been passed in rdi, rsi, and rdx.  
# We just have to return the value in rax.
# -----------------------------------------------------------------------------

        .global  maxofthree
        
        .text
maxofthree:
        mov     %rdi, %rax              # result (rax) initially holds x
# cmp sets condition codes based on 2nd operand minus first
        cmp     %rsi, %rax              # is x less than y?
#Conditional move long
        cmovl   %rsi, %rax              # if so, set result to y
        cmp     %rdx, %rax              # is max(x,y) less than z?
        cmovl   %rdx, %rax              # if so, set result to z
        ret                             # the max will be in eax