7funcs.s

    .file   "7.c"
    .text
    .globl  f
    .type   f, @function
f:
.LFB5:
    .cfi_startproc
    pushq   %rbp
    .cfi_def_cfa_offset 16
    .cfi_offset 6, -16
    movq    %rsp, %rbp
    .cfi_def_cfa_register 6
    movsd   %xmm0, -8(%rbp)     #a
    movsd   %xmm1, -16(%rbp)    #b
    movsd   %xmm2, -24(%rbp)    #x
    movsd   -16(%rbp), %xmm0
    mulsd   -24(%rbp), %xmm0
    mulsd   -24(%rbp), %xmm0
    mulsd   -24(%rbp), %xmm0
    mulsd   -24(%rbp), %xmm0
    addsd   -8(%rbp), %xmm0
    popq    %rbp
    .cfi_def_cfa 7, 8
    ret
    .cfi_endproc
.LFE5:
    .size   f, .-f
    .globl  S
    .type   S, @function
S:
.LFB6:
    .cfi_startproc
    pushq   %rbp
    .cfi_def_cfa_offset 16
    .cfi_offset 6, -16
    movq    %rsp, %rbp
    .cfi_def_cfa_register 6
    subq    $64, %rsp
    movsd   %xmm0, -40(%rbp)    #a
    movsd   %xmm1, -48(%rbp)    #b
    movl    %edi, -52(%rbp)     #A
    movl    %esi, -56(%rbp)     #B
    movl    $100000000, -20(%rbp)   # n
    movl    -56(%rbp), %eax
    subl    -52(%rbp), %eax     #(B - A)
    cvtsi2ss    %eax, %xmm0
    cvtsi2ss    -20(%rbp), %xmm1
    divss   %xmm1, %xmm0        #(B - A) / n
    cvtss2sd    %xmm0, %xmm0
    movsd   %xmm0, -8(%rbp)     #save h
    pxor    %xmm0, %xmm0
    movsd   %xmm0, -16(%rbp)    #sum
    movl    $0, -24(%rbp)       #int i = 0
    jmp .L4
.L5:
    cvtsi2sd    -52(%rbp), %xmm1 #A
    cvtsi2sd    -24(%rbp), %xmm0 # h
    mulsd   -8(%rbp), %xmm0     # i * h
    addsd   %xmm1, %xmm0        #A + i * h
    movsd   -48(%rbp), %xmm1    #A + i *h to f
    movq    -40(%rbp), %rax     #a to f
    movapd  %xmm0, %xmm2
    movq    %rax, -64(%rbp)     #b to f
    movsd   -64(%rbp), %xmm0
    call    f
    movapd  %xmm0, %xmm1
    movsd   -16(%rbp), %xmm0
    addsd   %xmm1, %xmm0
    movsd   %xmm0, -16(%rbp)
    addl    $1, -24(%rbp)
.L4:
    movl    -24(%rbp), %eax
    cmpl    -20(%rbp), %eax
    jl  .L5
    movsd   -8(%rbp), %xmm0
    mulsd   -16(%rbp), %xmm0    #return h * sum
    leave
    .cfi_def_cfa 7, 8
    ret
    .cfi_endproc
.LFE6:
    .size   S, .-S
    .section    .rodata
    .align 8
.LC1:
    .string "Incrorrect input, check README.md"
.LC2:
    .string "r"
.LC3:
    .string "w"
.LC4:
    .string "incorrect file"
.LC5:
    .string "%lf"
.LC6:
    .string "%d"
.LC7:
    .string "integral = %lf\n"
    .text
    .ident  "GCC: (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0"
    .section    .note.GNU-stack,"",@progbits