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

```asm
<mercLat>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x38(%rbp),%xmm0
  movq   D56(%rip),%xmm1
  xorpd  %xmm1,%xmm0
  movsd  D9(%rip),%xmm1
  divsd  %xmm1,%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  call   <exp@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  movq   %rax,%xmm0
  call   <atan@plt>
  add    %eax,%eax
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  movsd  D60(%rip),%xmm0
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  movsd  D100(%rip),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movl   $0x0,-0x24(%rbp)
  jmp    L10
L28:
  mov    -0x20(%rbp),%rax
  movq   %rax,%xmm0
  call   <sin@plt>
  movsd  D26(%rip),%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  movsd  D100(%rip),%xmm0
  subsd  -0x8(%rbp),%xmm0
  movsd  -0x8(%rbp),%xmm2
  movsd  D100(%rip),%xmm1
  addsd  %xmm2,%xmm1
  divsd  %xmm1,%xmm0
  movq   %xmm0,%rax
  movsd  D42(%rip),%xmm0
  movapd %xmm0,%xmm1
  movq   %rax,%xmm0
  call   <pow@plt>
  movq   %xmm0,%rax
  movq   %rax,%xmm3
  mulsd  -0x10(%rbp),%xmm3
  movq   %xmm3,%rax
  movq   %rax,%xmm0
  call   <atan@plt>
  add    %eax,%eax
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  movsd  D60(%rip),%xmm0
  subsd  %xmm1,%xmm0
  subsd  -0x20(%rbp),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movsd  -0x20(%rbp),%xmm0
  addsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  addl   $0x1,-0x24(%rbp)
L10:
  movsd  -0x18(%rbp),%xmm0
  movq   D27(%rip),%xmm1
  andpd  %xmm1,%xmm0
  comisd D85(%rip),%xmm0
  jbe    L7
  cmpl   $0xe,-0x24(%rbp)
  jle    L28
L7:
  mov    -0x20(%rbp),%rax
  movq   %rax,%xmm0
  call   <radDeg@plt>
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D56
type_guessed: byte[8]
name: extract_symbolic_data
arguments: data_tag: D9
type_guessed: f64
name: extract_symbolic_data
arguments: data_tag: D60
type_guessed: f64
name: extract_symbolic_data
arguments: data_tag: D100
type_guessed: f64
name: extract_symbolic_data
arguments: data_tag: D26
type_guessed: byte[8]
name: extract_symbolic_data
arguments: data_tag: D42
type_guessed: byte[8]
name: extract_symbolic_data
arguments: data_tag: D27
type_guessed: qword
name: extract_symbolic_data
arguments: data_tag: D85
type_guessed: f64

tool: {"D56": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80]}

tool: D9: 6378137

tool: D60: 1.5707963267948966

tool: D100: 1

tool: {"D26": [0xcb,0x8e,0x39,0x3d,0x1a,0xf2,0xb4,0x3f]}

tool: {"D42": [0xcb,0x8e,0x39,0x3d,0x1a,0xf2,0xa4,0x3f]}

tool: D27: 9223372036854775807

tool: D85: 1e-09

assistant: ```c
double mercLat(double y) {
  double ts = exp(-y / 6378137.0);
  double phi = 1.57079632679489661923132169163975144 - 2 * atan(ts);
  double dphi = 1.0;
  int i;
  for (i = 0; fabs(dphi) > 0.000000001 && i < 15; i++) {
    double con = (sqrt(1.0 - ((6356752.3142 / 6378137.0) * (6356752.3142 / 6378137.0)))) * sin(phi);
    dphi = 1.57079632679489661923132169163975144 - 2 * atan(ts * pow((1.0 - con) / (1.0 + con), (0.5 * (sqrt(1.0 - ((6356752.3142 / 6378137.0) * (6356752.3142 / 6378137.0))))))) - phi;
    phi += dphi;
  }
  return radDeg(phi);
}
```