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

```asm
<newt_raph>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  mov    $0xfffffff5,%r13d
  push   %r12
  mov    $0xffffffeb,%r12d
  push   %rbp
  xor    %ebp,%ebp
  push   %rbx
  sub    $0x828,%rsp
  mov    %rdi,0x18(%rsp)
  lea    0x40(%rsp),%rbx
  mov    %rsi,0x8(%rsp)
  mov    %edx,0x14(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x818(%rsp)
  xor    %eax,%eax
  lea    -0x1(%rdx),%eax
  mov    %rax,0x28(%rsp)
  shl    $0x3,%rax
  lea    0x48(%rsp,%rax,1),%rdi
  lea    0x8(%rsi,%rax,1),%rax
  mov    %rdi,0x30(%rsp)
  mov    %rax,0x38(%rsp)
  nopl   0x0(%rax)
L89:
  mov    0x14(%rsp),%r14d
  xor    %ecx,%ecx
  xor    %eax,%eax
  mov    0x8(%rsp),%rdi
  mov    0x18(%rsp),%r9
  mov    $0xffffffff,%r8d
  mov    %rbx,%rsi
  mov    %r14d,%edx
  call   *%r9
  test   %r14d,%r14d
  jle    L179
  mov    0x30(%rsp),%r15
  mov    %rbx,%r14
  pxor   %xmm1,%xmm1
  nopw   0x0(%rax,%rax,1)
L143:
  movsd  (%r14),%xmm0
  movsd  %xmm1,(%rsp)
  add    $0x8,%r14
  call   <fabs@plt>
  pxor   %xmm0,%xmm0
  movsd  (%rsp),%xmm1
  cvtsi2sd %rax,%xmm0
  addsd  %xmm0,%xmm1
  cmp    %r15,%r14
  jne    L143
  movsd  D38(%rip),%xmm0
  comisd %xmm1,%xmm0
  jae    L179
  lea    0x680(%rsp),%r11
  lea    0x4f0(%rsp),%r10
  mov    %rbx,%rsi
  lea    0x360(%rsp),%r15
  sub    $0x8,%rsp
  mov    %r10,%rcx
  mov    %r11,%r8
  mov    0x1c(%rsp),%eax
  mov    %r15,%rdx
  push   %rax
  mov    0x28(%rsp),%r9
  mov    0x18(%rsp),%rdi
  mov    %r11,0x30(%rsp)
  mov    %r10,0x10(%rsp)
  call   <fdjac3@plt>
  pop    %rax
  pop    %rdx
  xor    %eax,%eax
  mov    0x28(%rsp),%rcx
  mov    (%rsp),%r10
  lea    0x1d0(%rsp),%r14
  mov    0x20(%rsp),%r11
  nopl   0x0(%rax)
L154:
  movsd  (%rbx,%rax,8),%xmm0
  xorpd  D44(%rip),%xmm0
  mov    %rax,%rdx
  movsd  %xmm0,(%r14,%rax,8)
  add    $0x1,%rax
  cmp    %rcx,%rdx
  jne    L154
  mov    0x14(%rsp),%r8d
  mov    %r14,%rcx
  mov    %r15,%rdi
  mov    %r11,%rdx
  mov    %r10,%rsi
  call   <tridiag@plt>
  mov    %rbx,0x20(%rsp)
  pxor   %xmm1,%xmm1
  mov    %r14,%rbx
  mov    0x8(%rsp),%r15
  mov    0x38(%rsp),%r14
  jmp    L47
  nopl   (%rax)
L58:
  movsd  (%r15),%xmm2
  movsd  D113(%rip),%xmm4
  comisd %xmm2,%xmm4
  jbe    L101
  comisd D56(%rip),%xmm2
  jbe    L101
  mulsd  D45(%rip),%xmm0
  addsd  %xmm2,%xmm0
  movsd  %xmm0,(%r15)
L42:
  add    $0x8,%r15
  add    $0x8,%rbx
  cmp    %r15,%r14
  je     L67
  nopl   0x0(%rax,%rax,1)
L47:
  movsd  (%rbx),%xmm0
  movsd  %xmm1,(%rsp)
  call   <fabs@plt>
  pxor   %xmm0,%xmm0
  movsd  (%rsp),%xmm1
  cvtsi2sd %rax,%xmm0
  addsd  %xmm0,%xmm1
  cmp    $0x9,%r13d
  jbe    L13
  movsd  (%rbx),%xmm0
  cmp    $0x27,%r12d
  jbe    L146
  cmp    $0x3c,%ebp
  jg     L58
L101:
  movsd  (%r15),%xmm0
  addsd  (%rbx),%xmm0
  add    $0x8,%r15
  add    $0x8,%rbx
  movsd  %xmm0,-0x8(%r15)
  cmp    %r15,%r14
  jne    L47
L67:
  movsd  D98(%rip),%xmm0
  mov    0x20(%rsp),%rbx
  comisd %xmm1,%xmm0
  jae    L179
  add    $0x1,%ebp
  add    $0x1,%r12d
  add    $0x1,%r13d
  cmp    $0x96,%ebp
  jne    L89
  mov    $0x1,%eax
  jmp    L196
  nopw   0x0(%rax,%rax,1)
L179:
  xor    %eax,%eax
L196:
  mov    0x818(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L149
  add    $0x828,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L149:
  call   <__stack_chk_fail@plt>
L146:
  movsd  (%r15),%xmm2
  movsd  D113(%rip),%xmm5
  comisd %xmm2,%xmm5
  jbe    L101
  comisd D56(%rip),%xmm2
  jbe    L101
  mulsd  D62(%rip),%xmm0
  addsd  %xmm2,%xmm0
  movsd  %xmm0,(%r15)
  jmp    L42
L13:
  movsd  (%r15),%xmm2
  movsd  D113(%rip),%xmm3
  movsd  (%rbx),%xmm0
  comisd %xmm2,%xmm3
  jbe    L101
  comisd D56(%rip),%xmm2
  jbe    L101
  mulsd  D78(%rip),%xmm0
  addsd  %xmm2,%xmm0
  movsd  %xmm0,(%r15)
  jmp    L42
```

tool_calls: name: unpack_data
arguments: data_label: D38
type: byte[8]
name: unpack_data
arguments: data_label: D44
type: f32[4]
name: unpack_data
arguments: data_label: D113
type: f64
name: unpack_data
arguments: data_label: D56
type: f32[4]
name: unpack_data
arguments: data_label: D45
type: f64
name: unpack_data
arguments: data_label: D98
type: byte[8]
name: unpack_data
arguments: data_label: D62
type: f64
name: unpack_data
arguments: data_label: D78
type: f64

tool: {"D38": [0x9a,0x99,0x99,0x99,0x99,0x99,0xb9,0x3f]}

tool: {"D44": [0.0,-0.0,0.0,0.0]}

tool: D113: 2

tool: {"D56": [0.0,-2.3125,-107374184.0,1.8499999046325684]}

tool: D45: 0.2

tool: {"D98": [0x2d,0x43,0x1c,0xeb,0xe2,0x36,0x1a,0x3f]}

tool: D62: 0.7

tool: D78: 0.9

assistant: ```c
int newt_raph(void (*vecfunc)(double x[], double fvec[], int n, int init, ...), double x[], int n) {
  int k, i, index[50], Error;
  double errx, errf, d, fvec[50], fjac[50 * 50], p[50];
  double a[50], b[50], c[50];
  Error = 0;
  for (k = 0; k < 150; k++) {
    (*vecfunc)(x, fvec, n, 0, -1);
    errf = 0.0;
    for (i = 0; i < n; i++)
      errf += fabs(fvec[i]);
    if (errf <= 1e-1) {
      return (Error);
    }
    fdjac3(x, fvec, a, b, c, vecfunc, n);
    for (i = 0; i < n; i++)
      p[i] = -fvec[i];
    tridiag(a, b, c, p, n);
    errx = 0.0;
    for (i = 0; i < n; i++) {
      errx += fabs(p[i]);
      if (k > 10 && k <= 20 && x[i] < 2.0 && x[i] > -5.0)
        x[i] += p[i] * 0.9;
      else if (k > 20 && k <= 60 && x[i] < 2.0 && x[i] > -5.0)
        x[i] += p[i] * 0.7;
      else if (k > 60 && x[i] < 2.0 && x[i] > -5.0)
        x[i] += p[i] * 0.2;
      else
        x[i] += p[i];
    }
    if (errx <= 1e-4) {
      return (Error);
    }
  }
  Error = 1;
  return (Error);
}
```