user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<timefunc>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x48(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    -0x38(%rbp),%eax
  mov    $0xa1,%esi
  mov    %eax,%edi
  call   <mpfr_init2@plt>
  mov    -0x50(%rbp),%rax
  mov    (%rax),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <mpfr_get_prec@plt>
  mov    %eax,%edx
  mov    -0x34(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <mpfr_init2@plt>
  mov    -0x50(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <mpfr_get_prec@plt>
  mov    %eax,%edx
  mov    -0x30(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <mpfr_init2@plt>
  mov    D40(%rip),%rax
  mov    (%rax),%edx
  mov    -0x50(%rbp),%rax
  mov    (%rax),%rax
  mov    (%rax),%ecx
  mov    -0x34(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <mpfr_set@plt>
  mov    D40(%rip),%rax
  mov    (%rax),%edx
  mov    -0x50(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    (%rax),%ecx
  mov    -0x30(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <mpfr_set@plt>
  mov    -0x2c(%rbp),%eax
  mov    $0xa1,%esi
  mov    %eax,%edi
  call   <mpfr_init2@plt>
  mov    D72(%rip),%rax
  mov    (%rax),%edx
  mov    -0x34(%rbp),%ecx
  mov    -0x38(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <mpfr_set@plt>
  mov    -0x50(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    (%rax),%eax
  mov    %eax,-0x28(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    (%rax),%eax
  mov    %eax,-0x24(%rbp)
  mov    D72(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x34(%rbp),%edx
  mov    -0x30(%rbp),%esi
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_sub@plt>
  mov    D72(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x28(%rbp),%edx
  mov    -0x2c(%rbp),%esi
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_div_si@plt>
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L7
L4:
  movzwl -0x40(%rbp),%eax
  mov    %eax,%edi
  call   <_FPU_GETCW@plt>
  mov    D16(%rip),%rax
  movzwl (%rax),%eax
  not    %eax
  mov    %eax,%edx
  mov    D56(%rip),%rax
  movzwl (%rax),%eax
  and    %eax,%edx
  mov    D68(%rip),%rax
  movzwl (%rax),%eax
  or     %edx,%eax
  mov    %ax,-0x3e(%rbp)
  movzwl -0x3e(%rbp),%eax
  mov    %eax,%edi
  call   <_FPU_SETCW@plt>
  movzwl -0x40(%rbp),%eax
  mov    %eax,%edi
  call   <_FPU_SETCW@plt>
  mov    D72(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x2c(%rbp),%edx
  mov    -0x38(%rbp),%esi
  mov    -0x38(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_add@plt>
  mov    -0x10(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jl     L31
  mov    -0x10(%rbp),%rax
  sub    -0x8(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  addl   $0x1,-0x3c(%rbp)
  jmp    L11
L31:
  movq   $0x0,-0x20(%rbp)
L11:
  pxor   %xmm0,%xmm0
  cvtsi2sdq -0x20(%rbp),%xmm0
  movsd  -0x18(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
L7:
  mov    -0x30(%rbp),%edx
  mov    -0x38(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <mpfr_cmp@plt>
  test   %rax,%rax
  jle    L4
  cmpl   $0x0,-0x3c(%rbp)
  je     L38
  pxor   %xmm1,%xmm1
  cvtsi2sdl -0x3c(%rbp),%xmm1
  movsd  -0x18(%rbp),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
L38:
  mov    -0x30(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_clear@plt>
  mov    -0x34(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_clear@plt>
  mov    -0x38(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_clear@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_clear@plt>
  movsd  -0x18(%rbp),%xmm0
  cvttsd2si %xmm0,%edx
  mov    -0x48(%rbp),%rax
  mov    %edx,(%rax)
  mov    $0x1,%eax
  leave
  ret
```

assistant: ```c
int timefunc(int *timing, void **args) {
  unsigned short oldcw, cw;
  mpfr_t xMpfr;
  mpfr_t a, b;
  mpfr_t h;
  int steps, iterations, actualSteps;
  int i;
  uint64_t start, end;
  uint64_t usecs;
  double overalltime;
  mpfr_init2(xMpfr, 161);
  mpfr_init2(a, mpfr_get_prec(*((mpfr_t *)(args[0]))));
  mpfr_init2(b, mpfr_get_prec(*((mpfr_t *)(args[1]))));
  mpfr_set(a, *((mpfr_t *)(args[0])), GMP_RNDN);
  mpfr_set(b, *((mpfr_t *)(args[1])), GMP_RNDN);
  mpfr_init2(h, 161);
  mpfr_set(xMpfr, a, GMP_RNDU);
  steps = *((int *)(args[2]));
  iterations = *((int *)(args[3]));
  mpfr_sub(h, b, a, GMP_RNDU);
  mpfr_div_si(h, h, steps, GMP_RNDU);
  overalltime = 0;
  actualSteps = 0;
  while (mpfr_cmp(xMpfr, b) <= 0) {
    _FPU_GETCW(oldcw);
    cw = (_FPU_DEFAULT & ~_FPU_EXTENDED) | _FPU_DOUBLE;
    _FPU_SETCW(cw);
    _FPU_SETCW(oldcw);
    mpfr_add(xMpfr, xMpfr, h, GMP_RNDU);
    if (end >= start) {
      usecs = end - start;
      actualSteps++;
    } else {
      usecs = 0;
    }
    overalltime += usecs;
  }
  if (actualSteps != 0)
    overalltime /= actualSteps;
  mpfr_clear(b);
  mpfr_clear(a);
  mpfr_clear(xMpfr);
  mpfr_clear(h);
  *timing = overalltime;
  return 1;
}
```