unedited

    .file   "main.c"
    .intel_syntax noprefix
    .text
    .globl  f
    .type   f, @function
f:
    push    rbp
    mov rbp, rsp
    movsd   QWORD PTR -40[rbp], xmm0
    movsd   QWORD PTR -48[rbp], xmm1
    movsd   QWORD PTR -56[rbp], xmm2
    movsd   xmm0, QWORD PTR .LC0[rip]
    movsd   QWORD PTR -24[rbp], xmm0
    movsd   xmm0, QWORD PTR .LC0[rip]
    movsd   QWORD PTR -16[rbp], xmm0
    pxor    xmm0, xmm0
    movsd   QWORD PTR -8[rbp], xmm0
    jmp .L2
.L3:
    movsd   xmm0, QWORD PTR -48[rbp]
    subsd   xmm0, QWORD PTR -8[rbp]
    mulsd   xmm0, QWORD PTR -40[rbp]
    movsd   xmm2, QWORD PTR -8[rbp]
    movsd   xmm1, QWORD PTR .LC0[rip]
    addsd   xmm1, xmm2
    divsd   xmm0, xmm1
    movsd   xmm1, QWORD PTR -16[rbp]
    mulsd   xmm0, xmm1
    movsd   QWORD PTR -16[rbp], xmm0
    movsd   xmm0, QWORD PTR -24[rbp]
    addsd   xmm0, QWORD PTR -16[rbp]
    movsd   QWORD PTR -24[rbp], xmm0
    movsd   xmm1, QWORD PTR -8[rbp]
    movsd   xmm0, QWORD PTR .LC0[rip]
    addsd   xmm0, xmm1
    movsd   QWORD PTR -8[rbp], xmm0
.L2:
    movsd   xmm0, QWORD PTR -56[rbp]
    comisd  xmm0, QWORD PTR -8[rbp]
    ja  .L3
    movsd   xmm0, QWORD PTR -24[rbp]
    pop rbp
    ret
    .size   f, .-f
    .section    .rodata
    .align 8
.LC2:
    .string "Incorrect input, check README.md"
.LC3:
    .string "r"
.LC4:
    .string "w"
.LC5:
    .string "Incorrect file"
.LC6:
    .string "%lf"
.LC8:
    .string "|x| must be less than 1"
.LC10:
    .string "Answer = %lf\n"
    .text
    .globl  main
    .type   main, @function
main:
    push    rbp
    mov rbp, rsp
    sub rsp, 64
    mov DWORD PTR -52[rbp], edi
    mov QWORD PTR -64[rbp], rsi
    mov rax, QWORD PTR fs:40
    mov QWORD PTR -8[rbp], rax
    xor eax, eax
    cmp DWORD PTR -52[rbp], 3
    je  .L6
    lea rdi, .LC2[rip]
    call    puts@PLT
    mov eax, 0
    jmp .L13
.L6:
    mov rax, QWORD PTR -64[rbp]
    add rax, 8
    mov rax, QWORD PTR [rax]
    lea rsi, .LC3[rip]
    mov rdi, rax
    call    fopen@PLT
    mov QWORD PTR -32[rbp], rax
    mov rax, QWORD PTR -64[rbp]
    add rax, 16
    mov rax, QWORD PTR [rax]
    lea rsi, .LC4[rip]
    mov rdi, rax
    call    fopen@PLT
    mov QWORD PTR -24[rbp], rax
    cmp QWORD PTR -32[rbp], 0
    je  .L8
    cmp QWORD PTR -24[rbp], 0
    jne .L9
.L8:
    lea rdi, .LC5[rip]
    call    puts@PLT
    mov eax, 0
    jmp .L13
.L9:
    lea rdx, -48[rbp]
    mov rax, QWORD PTR -32[rbp]
    lea rsi, .LC6[rip]
    mov rdi, rax
    mov eax, 0
    call    __isoc99_fscanf@PLT
    lea rdx, -40[rbp]
    mov rax, QWORD PTR -32[rbp]
    lea rsi, .LC6[rip]
    mov rdi, rax
    mov eax, 0
    call    __isoc99_fscanf@PLT
    movsd   xmm0, QWORD PTR -48[rbp]
    movsd   xmm1, QWORD PTR .LC0[rip]
    comisd  xmm0, xmm1
    ja  .L10
    movsd   xmm1, QWORD PTR -48[rbp]
    movsd   xmm0, QWORD PTR .LC7[rip]
    comisd  xmm0, xmm1
    jbe .L15
.L10:
    lea rdi, .LC8[rip]
    call    puts@PLT
    mov eax, 0
    jmp .L13
.L15:
    movsd   xmm0, QWORD PTR -40[rbp]
    mov rax, QWORD PTR -48[rbp]
    movsd   xmm1, QWORD PTR .LC9[rip]
    movapd  xmm2, xmm1
    movapd  xmm1, xmm0
    movq    xmm0, rax
    call    f
    movq    rax, xmm0
    mov QWORD PTR -16[rbp], rax
    mov rdx, QWORD PTR -16[rbp]
    mov rax, QWORD PTR -24[rbp]
    movq    xmm0, rdx
    lea rsi, .LC10[rip]
    mov rdi, rax
    mov eax, 1
    call    fprintf@PLT
    mov rax, QWORD PTR -32[rbp]
    mov rdi, rax
    call    fclose@PLT
    mov rax, QWORD PTR -24[rbp]
    mov rdi, rax
    call    fclose@PLT
    mov eax, 0
.L13:
    mov rcx, QWORD PTR -8[rbp]
    xor rcx, QWORD PTR fs:40
    je  .L14
    call    __stack_chk_fail@PLT
.L14:
    leave
    ret
    .size   main, .-main
    .section    .rodata
    .align 8
.LC0:
    .long   0
    .long   1072693248
    .align 8
.LC7:
    .long   0
    .long   -1074790400
    .align 8
.LC9:
    .long   0
    .long   1078525952
    .ident  "GCC: (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0"
    .section    .note.GNU-stack,"",@progbits