segment .data
a       dd      3.25
b       dd      10.53
c       dd      0.0

        segment .text
        global  main
main:
        push    rbp
        mov     rbp, rsp
        movss   xmm0, [a]   ; load a
        subss   xmm0, [b]   ; subtract b from a
        movss   [c], xmm0   ; store a-b in c
        leave
        ret