user: Converte this assembly snippet into its equivalent C code:

```asm
<qromb>:
  endbr64
  push   %r15
  mov    $0x1,%esi
  push   %r14
  push   %r13
  mov    $0x1,%r13d
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x6c8,%rsp
  movsd  %xmm0,(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x6b8(%rsp)
  xor    %eax,%eax
  mov    D4(%rip),%rax
  mov    %rax,0x388(%rsp)
  push   0x718(%rsp)
  push   0x718(%rsp)
  push   0x718(%rsp)
  push   0x718(%rsp)
  movsd  0x20(%rsp),%xmm0
  movsd  %xmm7,0x58(%rsp)
  lea    0x388(%rsp),%r14
  lea    0x58(%rsp),%r15
  movsd  %xmm6,0x50(%rsp)
  movsd  %xmm5,0x48(%rsp)
  movsd  %xmm4,0x40(%rsp)
  movsd  %xmm3,0x38(%rsp)
  movsd  %xmm2,0x30(%rsp)
  movsd  %xmm1,0x28(%rsp)
  call   <trapzd@plt>
  movsd  %xmm0,0x78(%rsp)
  add    $0x20,%rsp
  lea    0x48(%rsp),%r12
  lea    0x40(%rsp),%rbp
  mov    %r12,%rdx
  mov    %rbp,%rax
  mov    %r14,%r12
  mov    %r13d,%ebp
  mov    %rdx,%r14
  mov    %r15,%r13
  mov    %rax,%r15
  jmp    L20
  nopl   0x0(%rax,%rax,1)
L46:
  add    $0x8,%r12
  add    $0x8,%r13
L20:
  movsd  D27(%rip),%xmm0
  mulsd  0x20(%r12),%xmm0
  add    $0x1,%ebp
  movsd  %xmm0,0x28(%r12)
  cmp    $0x65,%ebp
  je     L27
  push   0x718(%rsp)
  mov    %ebp,%esi
  mov    %rbx,%rdi
  push   0x718(%rsp)
  push   0x718(%rsp)
  push   0x718(%rsp)
  movsd  0x58(%rsp),%xmm7
  movsd  0x50(%rsp),%xmm6
  movsd  0x48(%rsp),%xmm5
  movsd  0x40(%rsp),%xmm4
  movsd  0x38(%rsp),%xmm3
  movsd  0x30(%rsp),%xmm2
  movsd  0x28(%rsp),%xmm1
  movsd  0x20(%rsp),%xmm0
  call   <trapzd@plt>
  add    $0x20,%rsp
  movsd  %xmm0,0x28(%r13)
  cmp    $0x4,%ebp
  jle    L46
  pxor   %xmm0,%xmm0
  mov    %r14,%r8
  mov    %r15,%rcx
  mov    $0x5,%edx
  mov    %r13,%rsi
  mov    %r12,%rdi
  call   <polint@plt>
  movsd  0x40(%rsp),%xmm9
  movsd  0x48(%rsp),%xmm0
  andpd  D11(%rip),%xmm0
  movapd %xmm9,%xmm4
  andpd  D11(%rip),%xmm4
  mulsd  D45(%rip),%xmm4
  comisd %xmm0,%xmm4
  jb     L46
L23:
  mov    0x6b8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L40
  add    $0x6c8,%rsp
  movapd %xmm9,%xmm0
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L27:
  lea    D51(%rip),%rdi
  call   <nrerror@plt>
  pxor   %xmm9,%xmm9
  jmp    L23
L40:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_label: D4
type_guessed: f64
name: disassemble_data
arguments: data_label: D27
type_guessed: f64
name: disassemble_data
arguments: data_label: D11
type_guessed: qword[2]
name: disassemble_data
arguments: data_label: D45
type_guessed: byte[8]
name: disassemble_data
arguments: data_label: D51
type_guessed: string

tool: D4: 1

tool: D27: 0.25

tool: {"D11": [0x7fffffffffffffff,0x0000000000000000]}

tool: {"D45": [0x8d,0xed,0xb5,0xa0,0xf7,0xc6,0xb0,0x3e]}

tool: D51: Too many steps in routine qromb

assistant: ```c
double qromb(double (*funcd)(), double es, double Wind, double AirDens, double ZO, double EactAir, double F, double hsalt, double phi_r, double ushear, double Zrh, double a, double b) {
  void polint(double xa[], double ya[], int n, double x, double *y, double *dy);
  double trapzd(double (*funcd)(), double es, double Wind, double AirDens, double ZO, double EactAir, double F, double hsalt, double phi_r, double ushear, double Zrh, double a, double b, int n);
  double ss, dss;
  double s[100 + 1], h[100 + 2];
  int j;
  h[1] = 1.0;
  for (j = 1; j <= 100; j++) {
    s[j] = trapzd(funcd, es, Wind, AirDens, ZO, EactAir, F, hsalt, phi_r, ushear, Zrh, a, b, j);
    if (j >= 5) {
      polint(&h[j - 5], &s[j - 5], 5, 0.0, &ss, &dss);
      if (fabs(dss) <= 1.0e-6 * fabs(ss))
        return ss;
    }
    h[j + 1] = 0.25 * h[j];
  }
  nrerror("Too many steps in routine qromb");
  return 0.0;
}
```