user: What would the C source look like for the assembly code provided here:

```asm
<precision_test>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x420,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x40,-0x420(%rbp)
  movl   $0x1,-0x41c(%rbp)
  movl   $0xffffffff,-0x418(%rbp)
  movl   $0x0,-0x414(%rbp)
  jmp    L30
L27:
  mov    $0x0,%eax
  call   <dnormal@plt>
  cvtsd2ss %xmm0,%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  movss  %xmm0,-0x210(%rbp,%rax,4)
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x210(%rbp,%rax,4),%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  movss  %xmm0,-0x410(%rbp,%rax,4)
  mov    $0x0,%eax
  call   <dnormal@plt>
  cvtsd2ss %xmm0,%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  movss  %xmm0,-0x110(%rbp,%rax,4)
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x110(%rbp,%rax,4),%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  movss  %xmm0,-0x310(%rbp,%rax,4)
  addl   $0x1,-0x414(%rbp)
L30:
  mov    -0x420(%rbp),%eax
  cmp    %eax,-0x414(%rbp)
  jl     L27
  lea    -0x418(%rbp),%r8
  lea    -0x41c(%rbp),%rdi
  lea    -0x420(%rbp),%rcx
  lea    -0x41c(%rbp),%rdx
  lea    -0x310(%rbp),%rsi
  lea    -0x410(%rbp),%rax
  mov    %r8,%r9
  mov    %rdi,%r8
  mov    %rax,%rdi
  call   <fft_@plt>
  lea    -0x41c(%rbp),%r8
  lea    -0x41c(%rbp),%rdi
  lea    -0x420(%rbp),%rcx
  lea    -0x41c(%rbp),%rdx
  lea    -0x310(%rbp),%rsi
  lea    -0x410(%rbp),%rax
  mov    %r8,%r9
  mov    %rdi,%r8
  mov    %rax,%rdi
  call   <fft_@plt>
  movl   $0x0,-0x414(%rbp)
  jmp    L14
L19:
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x110(%rbp,%rax,4),%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x310(%rbp,%rax,4),%xmm1
  movaps %xmm0,%xmm4
  subss  %xmm1,%xmm4
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x210(%rbp,%rax,4),%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x410(%rbp,%rax,4),%xmm1
  movaps %xmm0,%xmm3
  subss  %xmm1,%xmm3
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x110(%rbp,%rax,4),%xmm2
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x210(%rbp,%rax,4),%xmm1
  mov    -0x414(%rbp),%eax
  cltq
  movss  -0x310(%rbp,%rax,4),%xmm0
  mov    -0x414(%rbp),%eax
  cltq
  mov    -0x410(%rbp,%rax,4),%edx
  mov    -0x414(%rbp),%eax
  movaps %xmm4,%xmm5
  movaps %xmm3,%xmm4
  movaps %xmm2,%xmm3
  movaps %xmm1,%xmm2
  movaps %xmm0,%xmm1
  movd   %edx,%xmm0
  mov    %eax,%esi
  lea    D6(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  addl   $0x1,-0x414(%rbp)
L14:
  mov    -0x420(%rbp),%eax
  cmp    %eax,-0x414(%rbp)
  jl     L19
  mov    $0x0,%edi
  call   <exit@plt>
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L40
  call   <__stack_chk_fail@plt>
L40:
  leave
  ret
```

tool_calls: name: read_data
arguments: label: D6
data_type: string

tool: D6: %10d%10.6f%10.6f%10.6f%10.6f%10.6f%10.6f


assistant: ```c
void precision_test() {
  extern double dnormal();
  int n = 64;
  int one = 1, negone = -1;
  int i, j, k;
  float a[64], b[64], c[64], d[64];
  for (i = 0; i < n; i++) {
    a[i] = c[i] = dnormal();
    b[i] = d[i] = dnormal();
  }
  fft_(a, b, &one, &n, &one, &negone);
  fft_(a, b, &one, &n, &one, &one);
  for (i = 0; i < n; i++) {
    printf("%10d%10.6f%10.6f%10.6f%10.6f%10.6f%10.6f\n", i, a[i], b[i], c[i], d[i], c[i] - a[i], d[i] - b[i]);
  }
  exit(0);
}
```