user: What is the c source code of the assembly code below:

```asm
<solve>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r15
  mov    %edx,%edi
  mov    %ecx,-0x8(%rsp)
  lea    -0x1(%rdx),%eax
  mov    %eax,-0x4(%rsp)
  test   %eax,%eax
  jle    L135
  mov    %ecx,%eax
  movslq %ecx,%rcx
  add    $0x1,%eax
  mov    %eax,-0x10(%rsp)
  lea    -0x1(%rdx),%eax
  mov    %eax,-0x3c(%rsp)
  lea    0x4(,%rcx,4),%rbx
  mov    %rbx,-0x20(%rsp)
  mov    %eax,-0xc(%rsp)
  mov    %r15,%r12
  mov    %r15,%r14
  mov    %rcx,-0x28(%rsp)
  movl   $0x0,-0x18(%rsp)
  mov    $0x0,%edx
  mov    $0x0,%ebp
  pxor   %xmm8,%xmm8
  movaps %xmm8,%xmm7
  lea    0x4(%r15),%rax
  mov    %rax,-0x48(%rsp)
  movaps %xmm8,%xmm3
  movaps %xmm8,%xmm4
  movaps %xmm8,%xmm6
  movaps %xmm8,%xmm5
L122:
  mov    %r14,%r8
  ucomiss (%r14),%xmm8
  jp     L136
  ucomiss (%r14),%xmm7
  jne    L136
  cmp    %ebp,%edi
  je     L9
  movslq -0x18(%rsp),%r9
  lea    (%r15,%r9,4),%rbx
  mov    -0x3c(%rsp),%eax
  add    %r9,%rax
  mov    -0x48(%rsp),%r11
  lea    (%r11,%rax,4),%r10
  mov    %rcx,%r9
  mov    %rdx,%r11
  jmp    L193
L183:
  ucomiss (%r8),%xmm3
  jp     L136
  ucomiss (%r8),%xmm4
  jne    L136
  add    $0x1,%r11
  add    %rcx,%r9
  cmp    %r11d,%edi
  je     L189
L193:
  movss  (%rsi,%rdx,4),%xmm0
  addss  0x4(%rsi,%r11,4),%xmm0
  movss  %xmm0,(%rsi,%rdx,4)
  cmp    %ebp,%edi
  jle    L183
  mov    %rbx,%rax
L5:
  movss  (%rax),%xmm0
  addss  (%rax,%r9,4),%xmm0
  movss  %xmm0,(%rax)
  add    $0x4,%rax
  cmp    %r10,%rax
  jne    L5
  jmp    L183
L136:
  lea    0x1(%rbp),%eax
  mov    %eax,-0x14(%rsp)
  cmp    %eax,%edi
  jle    L186
  lea    (%rsi,%rdx,4),%r11
  mov    %rcx,%r9
  neg    %r9
  mov    -0x3c(%rsp),%ebx
  lea    -0x1(%rbx),%eax
  add    %rdx,%rax
  lea    0x4(%rsi,%rax,4),%r13
  mov    -0x28(%rsp),%r10
  mov    %ebx,%eax
  mov    %rax,-0x30(%rsp)
  jmp    L2
L239:
  movaps %xmm1,%xmm2
  mulss  (%rax,%r9,4),%xmm2
  movss  (%rax),%xmm0
  subss  %xmm2,%xmm0
  movss  %xmm0,(%rax)
  add    $0x4,%rax
  cmp    %rbx,%rax
  jne    L239
L265:
  add    %rcx,%r10
  add    $0x4,%r11
  sub    %rcx,%r9
  cmp    %r13,%r11
  je     L186
L2:
  mov    %r10d,%eax
  movss  (%r12,%r10,4),%xmm1
  ucomiss %xmm6,%xmm1
  jp     L254
  ucomiss %xmm5,%xmm1
  je     L265
L254:
  divss  (%r8),%xmm1
  movaps %xmm1,%xmm2
  mulss  (%rsi,%rdx,4),%xmm2
  movss  0x4(%r11),%xmm0
  subss  %xmm2,%xmm0
  movss  %xmm0,0x4(%r11)
  cmp    %ebp,%edi
  jle    L265
  add    %edx,%eax
  movslq %eax,%rbx
  lea    (%r15,%rbx,4),%rax
  mov    %rax,-0x38(%rsp)
  add    -0x30(%rsp),%rbx
  mov    -0x48(%rsp),%rax
  lea    (%rax,%rbx,4),%rbx
  mov    -0x38(%rsp),%rax
  jmp    L239
L186:
  add    $0x1,%rdx
  add    %rcx,-0x28(%rsp)
  add    -0x20(%rsp),%r14
  mov    -0x10(%rsp),%ebx
  add    %ebx,-0x18(%rsp)
  subl   $0x1,-0x3c(%rsp)
  add    $0x4,%r12
  mov    -0x14(%rsp),%ebp
  mov    -0xc(%rsp),%eax
  cmp    %eax,%ebp
  jne    L122
  mov    -0x4(%rsp),%edx
  mov    %edx,%r10d
  movslq %edi,%rcx
  shl    $0x2,%rcx
  lea    (%r15,%rcx,1),%r11
  mov    -0x8(%rsp),%eax
  mov    %eax,%ebx
  not    %ebx
  movslq %ebx,%rbx
  shl    $0x2,%rbx
  imul   %edx,%eax
  add    %edx,%eax
  cltq
  lea    (%r15,%rax,4),%r8
  add    %rsi,%rcx
  mov    -0x20(%rsp),%rbp
  sub    $0x4,%rbp
  lea    0x4(%rsi),%r12
L204:
  test   %r10d,%r10d
  jle    L246
  mov    %rsi,%rax
  lea    -0x1(%r10),%edx
  lea    (%r12,%rdx,4),%r9
  mov    %r11,%rdx
L237:
  movss  -0x4(%rdx),%xmm0
  divss  (%r8),%xmm0
  mulss  -0x4(%rcx),%xmm0
  movss  (%rax),%xmm1
  subss  %xmm0,%xmm1
  movss  %xmm1,(%rax)
  add    $0x4,%rax
  add    %rbp,%rdx
  cmp    %r9,%rax
  jne    L237
L246:
  sub    $0x4,%r11
  add    %rbx,%r8
  sub    $0x4,%rcx
  sub    $0x1,%r10d
  jne    L204
L135:
  test   %edi,%edi
  jle    L17
  mov    %rsi,%rdx
  movslq -0x8(%rsp),%rax
  lea    0x4(,%rax,4),%r8
  mov    %r15,%rax
  lea    -0x1(%rdi),%ecx
  lea    0x4(%rsi,%rcx,4),%rcx
L276:
  movss  (%rdx),%xmm0
  divss  (%rax),%xmm0
  movss  %xmm0,(%rdx)
  add    $0x4,%rdx
  add    %r8,%rax
  cmp    %rdx,%rcx
  jne    L276
  mov    $0x0,%eax
  jmp    L111
L189:
  mov    $0xffffffff,%eax
L111:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L9:
  mov    $0xffffffff,%eax
  jmp    L111
L17:
  mov    $0x0,%eax
  jmp    L111
```

assistant: ```c
solve(matrix, vector, irow, ilead) int irow, ilead;
float (*matrix)[];
float (*vector)[];
{
  float quotient;
  int i, j, k;
  int mpi, mpj, mpk;
  mpi = 0;
  for (i = 0; i < irow - 1; i++) {
    j = i;
    mpj = mpi;
    while ((*matrix)[mpi + i] == 0) {
      if (j == irow) {
        return (-1);
      }
      j++;
      mpj += ilead;
      (*vector)[i] += (*vector)[j];
      for (k = i; k < irow; k++) {
        (*matrix)[mpi + k] += (*matrix)[mpj + k];
      }
    }
    mpj = mpi + ilead;
    for (j = i + 1; j < irow; j++) {
      if ((*matrix)[mpj + i] != 0) {
        quotient = (*matrix)[mpj + i] / (*matrix)[mpi + i];
        (*vector)[j] -= (*vector)[i] * quotient;
        for (k = i; k < irow; k++) {
          (*matrix)[mpj + k] -= (*matrix)[mpi + k] * quotient;
        }
      }
      mpj += ilead;
    }
    mpi += ilead;
  }
  mpi = 0;
  for (i = 0; i < irow - 1; i++) {
    k = irow - i - 1;
    mpj = 0;
    mpk = k * ilead;
    for (j = 0; j < k; j++) {
      (*vector)[j] -= (*matrix)[mpj + k] / (*matrix)[mpk + k] * (*vector)[k];
      mpj += ilead;
    }
  }
  mpi = 0;
  for (i = 0; i < irow; i++) {
    (*vector)[i] /= (*matrix)[mpi + i];
    mpi += ilead;
  }
  return (0);
}
```