user: What is the c source code of the assembly code below?

```asm
<main>:
  endbr64
  push   %r15
  mov    $0x10,%r9d
  mov    $0x1,%r8d
  mov    $0x8,%ecx
  push   %r14
  mov    $0x1,%edx
  mov    $0x20,%esi
  mov    $0x1,%edi
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  lea    0x20(%rsp),%rbp
  movq   $0xfffffffffffffffd,0x20(%rsp)
  call   <f3tensor@plt>
  mov    $0x10,%r9d
  mov    $0x1,%r8d
  mov    $0x8,%ecx
  mov    $0x1,%edx
  mov    $0x20,%esi
  mov    $0x1,%edi
  mov    %rax,%r12
  call   <f3tensor@plt>
  mov    $0x10,%ecx
  mov    $0x1,%edx
  mov    $0x20,%esi
  mov    $0x1,%edi
  mov    %rax,%rbx
  mov    %rax,0x10(%rsp)
  lea    0x8(%r12),%r15
  call   <matrix@plt>
  lea    0x8(%rbx),%r14
  mov    %rax,0x18(%rsp)
  lea    0x108(%r12),%rax
  mov    %rax,0x8(%rsp)
L57:
  mov    $0x8,%r13d
  nop
L50:
  mov    $0x4,%ebx
  nopl   (%rax)
L66:
  mov    %rbp,%rdi
  call   <ran1@plt>
  pxor   %xmm0,%xmm0
  lea    -0x1(%rax,%rax,1),%eax
  cvtsi2ss %eax,%xmm0
  mov    (%r15),%rax
  mov    (%rax,%r13,1),%rax
  movss  %xmm0,(%rax,%rbx,1)
  mulss  D66(%rip),%xmm0
  mov    (%r14),%rax
  mov    (%rax,%r13,1),%rax
  movss  %xmm0,(%rax,%rbx,1)
  add    $0x4,%rbx
  cmp    $0x44,%rbx
  jne    L66
  add    $0x8,%r13
  cmp    $0x48,%r13
  jne    L50
  add    $0x8,%r15
  add    $0x8,%r14
  cmp    0x8(%rsp),%r15
  jne    L57
  mov    0x18(%rsp),%rbx
  mov    $0x1,%r9d
  mov    $0x10,%r8d
  mov    %r12,%rdi
  mov    $0x8,%ecx
  mov    $0x20,%edx
  mov    %rbx,%rsi
  call   <rlft3@plt>
  mov    %rbx,%rsi
  mov    $0x8,%ecx
  mov    %r12,%rdi
  mov    $0xffffffff,%r9d
  mov    $0x10,%r8d
  mov    $0x20,%edx
  call   <rlft3@plt>
  movsd  D62(%rip),%xmm0
  mov    0x10(%rsp),%rdx
  mov    $0x10,%r9d
  mov    $0x8,%r8d
  mov    $0x20,%ecx
  mov    %r12,%rsi
  lea    D4(%rip),%rdi
  call   <compare@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  mov    D62(%rip),%rax
  movq   %rax,%xmm0
  je     L38
  lea    D49(%rip),%rdi
  call   <printf@plt>
  test   %rbx,%rbx
  js     L63
  pxor   %xmm0,%xmm0
  cvtsi2sd %rbx,%xmm0
L14:
  lea    D38(%rip),%rdi
  call   <printf@plt>
  jmp    L10
L38:
  lea    D32(%rip),%rdi
  call   <printf@plt>
L10:
  mov    0x18(%rsp),%rdi
  mov    $0x10,%r8d
  mov    $0x1,%ecx
  mov    $0x20,%edx
  mov    $0x1,%esi
  call   <free_matrix@plt>
  sub    $0x8,%rsp
  mov    $0x1,%r9d
  mov    $0x8,%r8d
  push   $0x10
  mov    0x20(%rsp),%rdi
  mov    $0x1,%ecx
  mov    $0x20,%edx
  mov    $0x1,%esi
  call   <free_f3tensor@plt>
  mov    $0x20,%edx
  mov    $0x1,%r9d
  mov    $0x8,%r8d
  mov    $0x1,%ecx
  mov    $0x1,%esi
  mov    %r12,%rdi
  movq   $0x10,(%rsp)
  call   <free_f3tensor@plt>
  pop    %rax
  xor    %eax,%eax
  pop    %rdx
  test   %rbx,%rbx
  setne  %al
  mov    0x28(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L71
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L63:
  mov    %rbx,%rax
  mov    %rbx,%rdx
  pxor   %xmm0,%xmm0
  shr    %rax
  and    $0x1,%edx
  or     %rdx,%rax
  cvtsi2sd %rax,%xmm0
  addsd  %xmm0,%xmm0
  jmp    L14
L71:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_label: D66
type_infered: byte[4]
name: read_data
arguments: data_label: D62
type_infered: f64
name: read_data
arguments: data_label: D4
type_infered: string
name: read_data
arguments: data_label: D49
type_infered: string
name: read_data
arguments: data_label: D38
type_infered: string
name: read_data
arguments: data_label: D32
type_infered: string

tool: {"D66": [0x00,0x00,0x00,0x45]}

tool: D62: 0.0008

tool: D4: data

tool: D49: Comparison error at tolerance %12.6f


tool: D38: Total number of errors is %d


tool: D32: Data compares OK to tolerance %12.6f


assistant: ```c
int main(void) {
  long idum = (-3);
  unsigned long err, i, j, k, nn1 = 32, nn2 = 8, nn3 = 16;
  float fnorm, ***data1, ***data2, **speq1;
  fnorm = (float)nn1 * (float)nn2 * (float)nn3 / 2.0;
  data1 = f3tensor(1, nn1, 1, nn2, 1, nn3);
  data2 = f3tensor(1, nn1, 1, nn2, 1, nn3);
  speq1 = matrix(1, nn1, 1, nn2 << 1);
  for (i = 1; i <= nn1; i++)
    for (j = 1; j <= nn2; j++)
      for (k = 1; k <= nn3; k++)
        data2[i][j][k] = fnorm * (data1[i][j][k] = 2 * ran1(&idum) - 1);
  rlft3(data1, speq1, nn1, nn2, nn3, 1);
  rlft3(data1, speq1, nn1, nn2, nn3, -1);
  err = compare("data", data1, data2, nn1, nn2, nn3, 0.0008);
  if (err) {
    printf("Comparison error at tolerance %12.6f\n", 0.0008);
    printf("Total number of errors is %d\n", err);
  } else {
    printf("Data compares OK to tolerance %12.6f\n", 0.0008);
  }
  free_matrix(speq1, 1, nn1, 1, nn2 << 1);
  free_f3tensor(data2, 1, nn1, 1, nn2, 1, nn3);
  free_f3tensor(data1, 1, nn1, 1, nn2, 1, nn3);
  return (err > 0);
}
```