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

```asm
<NUM_lu>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  mov    %rsi,%r13
  mov    $0x4,%esi
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  mov    %edx,%edi
  push   %rbx
  mov    %edx,%ebx
  sub    $0x38,%rsp
  call   <calloc@plt>
  mov    $0x8,%esi
  mov    %ebx,%edi
  mov    %rax,%r12
  call   <calloc@plt>
  mov    %r12,%rdx
  movslq %ebx,%rcx
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  test   %ebx,%ebx
  jle    L0
  cs nopw 0x0(%rax,%rax,1)
L192:
  movq   $0x0,0x0(%r13,%rax,8)
  add    $0x4,%rdx
  mov    %eax,-0x4(%rdx)
  add    $0x1,%rax
  cmp    %rax,%rcx
  jne    L192
L0:
  lea    -0x1(%rbx),%eax
  mov    %eax,0x14(%rsp)
  test   %eax,%eax
  jle    L133
  lea    -0x2(%rbx),%eax
  mov    %r12,%r14
  mov    %r12,0x20(%rsp)
  mov    $0x1,%edi
  mov    %rax,0x8(%rsp)
  lea    0x4(%r12),%rax
  neg    %r14
  mov    %r12,%r15
  mov    %rax,(%rsp)
  add    %r14,%r14
  xor    %r9d,%r9d
  pxor   %xmm2,%xmm2
  movl   $0xffffffff,0x10(%rsp)
  movq   D18(%rip),%xmm3
  mov    %r13,0x28(%rsp)
  mov    %rdi,%r13
  xchg   %ax,%ax
L17:
  mov    %r9d,%ecx
  mov    %r9d,%r10d
  cmp    %r9d,%ebx
  jle    L24
  mov    %ebx,%eax
  mov    (%rsp),%rdi
  mov    %r15,%r8
  sub    %r13d,%eax
  add    %r9,%rax
  lea    (%rdi,%rax,4),%r11
  mov    0x10(%rsp),%eax
  lea    (%rdi,%rax,4),%rdi
  nopw   0x0(%rax,%rax,1)
L208:
  movapd %xmm2,%xmm1
  test   %r10d,%r10d
  je     L74
  mov    (%r8),%eax
  mov    %r12,%rdx
  movapd %xmm2,%xmm1
  imul   %ebx,%eax
  cltq
  lea    (%r14,%rax,8),%rsi
  add    %rbp,%rsi
  nop
L70:
  mov    (%rdx),%eax
  imul   %ebx,%eax
  add    %ecx,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
  mulsd  (%rsi,%rdx,2),%xmm0
  add    $0x4,%rdx
  addsd  %xmm0,%xmm1
  cmp    %rdx,%rdi
  jne    L70
L74:
  mov    (%r8),%eax
  add    $0x4,%r8
  imul   %ebx,%eax
  add    %ecx,%eax
  cltq
  lea    0x0(%rbp,%rax,8),%rax
  movsd  (%rax),%xmm0
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  cmp    %r8,%r11
  jne    L208
  mov    %r15,%rsi
  mov    %ecx,%edi
  movapd %xmm2,%xmm1
  mov    %ecx,%edx
L127:
  mov    (%rsi),%eax
  imul   %ebx,%eax
  add    %ecx,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
  andpd  %xmm3,%xmm0
  comisd %xmm1,%xmm0
  maxsd  %xmm1,%xmm0
  cmova  %edx,%edi
  add    $0x1,%edx
  movapd %xmm0,%xmm1
  add    $0x4,%rsi
  cmp    %edx,%ebx
  jne    L127
  mov    (%r15),%eax
  cmp    %r10d,%edi
  je     L24
  movslq %edi,%rdi
  lea    (%r12,%rdi,4),%rdx
  mov    (%rdx),%esi
  mov    %esi,(%r15)
  mov    %eax,(%rdx)
L24:
  mov    (%r15),%eax
  imul   %ebx,%eax
  lea    (%rax,%rcx,1),%edx
  movslq %edx,%rdx
  lea    0x0(%rbp,%rdx,8),%r11
  movsd  (%r11),%xmm4
  ucomisd %xmm2,%xmm4
  jp     L229
  je     L169
L229:
  cmp    %r13d,%ebx
  jle    L160
  movslq %eax,%r10
  mov    0x10(%rsp),%edx
  mov    (%rsp),%rdi
  mov    %r13,%r8
  shl    $0x3,%r10
  lea    (%r14,%r10,1),%rsi
  lea    (%rdi,%rdx,4),%rdi
  add    %rbp,%r10
  add    %rbp,%rsi
  nopw   0x0(%rax,%rax,1)
L224:
  mov    %r8d,%ecx
  mov    %r12,%rdx
  movapd %xmm2,%xmm1
  test   %r9,%r9
  je     L327
  nop
L261:
  mov    (%rdx),%eax
  imul   %ebx,%eax
  add    %ecx,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
  mulsd  (%rsi,%rdx,2),%xmm0
  add    $0x4,%rdx
  addsd  %xmm0,%xmm1
  cmp    %rdx,%rdi
  jne    L261
L327:
  movsd  (%r10,%r8,8),%xmm0
  subsd  %xmm1,%xmm0
  divsd  %xmm4,%xmm0
  movsd  %xmm0,(%r10,%r8,8)
  add    $0x1,%r8
  cmp    %r8d,%ebx
  jle    L160
  movsd  (%r11),%xmm4
  jmp    L224
  nopl   (%rax)
L160:
  addl   $0x1,0x10(%rsp)
  lea    0x1(%r9),%rax
  add    $0x1,%r13
  add    $0x4,%r15
  cmp    %r9,0x8(%rsp)
  je     L105
  mov    %rax,%r9
  jmp    L17
L169:
  lea    D0(%rip),%rdi
  call   <printf@plt>
  add    $0x38,%rsp
  mov    $0x2,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L105:
  movslq 0x14(%rsp),%rdi
  lea    (%r12,%rax,4),%rcx
  mov    0x28(%rsp),%r13
  movapd %xmm2,%xmm1
  mov    0x20(%rsp),%r9
  movslq (%r12,%rdi,4),%r8
  mov    %rdi,%r10
  mov    %r8d,%edx
  imul   %ebx,%edx
  movslq %edx,%rax
  lea    (%r14,%rax,8),%rsi
  add    %rbp,%rsi
L213:
  mov    (%r9),%eax
  imul   %ebx,%eax
  add    %r10d,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
  mulsd  (%rsi,%r9,2),%xmm0
  add    $0x4,%r9
  addsd  %xmm0,%xmm1
  cmp    %r9,%rcx
  jne    L213
L76:
  mov    0x14(%rsp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(%rbp,%rax,8),%rax
  movsd  (%rax),%xmm0
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  test   %ebx,%ebx
  jle    L300
  mov    %ebx,%eax
  mov    0x18(%rsp),%r14
  lea    0x4(%r12),%r9
  xor    %esi,%esi
  imul   %ebx,%eax
  movapd %xmm2,%xmm1
  mov    %r14,%r10
  cltq
  lea    0x0(%rbp,%rax,8),%r11
  sub    %r14,%r11
L9:
  movsd  (%r11,%r10,1),%xmm0
  add    $0x1,%esi
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%r10)
  cmp    %esi,%ebx
  je     L300
  mov    %r14,%rcx
  mov    %r12,%rdx
  movapd %xmm2,%xmm1
  nopl   0x0(%rax)
L117:
  mov    (%rdx),%eax
  add    $0x4,%rdx
  add    $0x8,%rcx
  imul   %ebx,%eax
  add    %esi,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
  mulsd  -0x8(%rcx),%xmm0
  addsd  %xmm0,%xmm1
  cmp    %rdx,%r9
  jne    L117
  add    $0x8,%r10
  add    $0x4,%r9
  jmp    L9
L300:
  mov    0x14(%rsp),%r14d
  test   %r14d,%r14d
  js     L253
  mov    0x18(%rsp),%rax
  lea    (%r12,%rdi,4),%r10
  add    $0x4,%r12
  lea    (%rax,%rdi,8),%r11
L81:
  mov    %ebx,%eax
  mov    %edi,%edx
  mov    %edi,%r9d
  imul   %r8d,%eax
  add    %edi,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm3
  ucomisd %xmm2,%xmm3
  jp     L153
  je     L251
L153:
  cmp    %edi,%ebx
  jle    L57
  mov    %r14d,%eax
  movapd %xmm3,%xmm0
  movapd %xmm2,%xmm1
  mov    %r10,%rcx
  sub    %edx,%eax
  movslq %r8d,%rdx
  add    %rdi,%rax
  lea    (%r12,%rax,4),%rsi
  jmp    L318
  nop
L325:
  movslq (%rcx),%rdx
  mov    %ebx,%eax
  imul   %edx,%eax
  add    %r9d,%eax
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
L318:
  mulsd  0x0(%r13,%rdx,8),%xmm0
  add    $0x4,%rcx
  addsd  %xmm0,%xmm1
  cmp    %rsi,%rcx
  jne    L325
L48:
  movsd  (%r11),%xmm0
  sub    $0x1,%rdi
  sub    $0x4,%r10
  sub    $0x8,%r11
  subsd  %xmm1,%xmm0
  divsd  %xmm3,%xmm0
  movsd  %xmm0,0x0(%r13,%r8,8)
  test   %edi,%edi
  js     L253
  movslq (%r10),%r8
  jmp    L81
L57:
  movapd %xmm2,%xmm1
  jmp    L48
L253:
  mov    0x18(%rsp),%rdi
  call   <free@plt>
  add    $0x38,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L251:
  lea    D1(%rip),%rdi
  call   <printf@plt>
  add    $0x38,%rsp
  mov    $0x2,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L133:
  movslq 0x14(%rsp),%rdi
  mov    %ebx,%edx
  pxor   %xmm2,%xmm2
  movapd %xmm2,%xmm1
  movslq (%r12,%rdi,4),%r8
  imul   %r8d,%edx
  jmp    L76
```

tool_calls: name: retrieve_data
arguments: data_label: D18
datatype: qword
name: retrieve_data
arguments: data_label: D0
datatype: string
name: retrieve_data
arguments: data_label: D1
datatype: string

tool: D18: 9223372036854775807

tool: D0: LU: matrix is singular, no unique solution.


tool: D1: LU: No unique solution exist.


assistant: ```c
int NUM_lu(double *matrix, double *solution, int neq) {
  int i, j, k;
  int idx;
  double big;
  double tmp = 0.0;
  int *P;
  double *y;
  P = (int *)calloc(neq, sizeof(int));
  y = (double *)calloc(neq, sizeof(double));
  for (i = 0; i < neq; i++) {
    solution[i] = 0;
    P[i] = i;
  }
  for (i = 0; i < neq - 1; i++) {
    for (j = i; j < neq; j++) {
      tmp = 0.0;
      for (k = 0; k < i; k++)
        tmp += matrix[i + neq * P[k]] * matrix[k + neq * P[j]];
      matrix[i + neq * P[j]] = matrix[i + neq * P[j]] - tmp;
    }
    big = 0.0;
    idx = i;
    for (j = i; j < neq; j++) {
      if (big < fabs(matrix[i + neq * P[j]])) {
        idx = j;
        big = fabs(matrix[i + neq * P[j]]);
      }
    }
    if (idx != i) {
      tmp = P[i];
      P[i] = P[idx];
      P[idx] = tmp;
    }
    if (matrix[i + neq * P[i]] == 0.0) {
      printf("LU: matrix is singular, no unique solution.\n");
      return 2;
    }
    for (j = i + 1; j < neq; j++) {
      tmp = 0.0;
      for (k = 0; k < i; k++)
        tmp += matrix[j + neq * P[k]] * matrix[k + neq * P[i]];
      matrix[j + neq * P[i]] = (matrix[j + neq * P[i]] - tmp) / matrix[i + neq * P[i]];
    }
  }
  i = neq - 1;
  tmp = 0.0;
  for (k = 0; k < neq - 1; k++)
    tmp += matrix[i + neq * P[k]] * matrix[k + neq * P[i]];
  matrix[i + neq * P[i]] = matrix[i + neq * P[i]] - tmp;
  for (i = 0; i < neq; i++) {
    tmp = 0.0;
    for (j = 0; j < i; j++)
      tmp += matrix[i + neq * P[j]] * y[j];
    y[i] = matrix[i + neq * neq] - tmp;
  }
  for (i = neq - 1; i >= 0; i--) {
    if (matrix[i + neq * P[i]] == 0.0) {
      printf("LU: No unique solution exist.\n");
      return 2;
    }
    tmp = 0.0;
    for (j = i; j < neq; j++)
      tmp += matrix[i + neq * P[j]] * solution[P[j]];
    solution[P[i]] = (y[i] - tmp) / matrix[i + neq * P[i]];
  }
  free(y);
  return 0;
}
```