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

```asm
<ElTran>:
  endbr64
  push   %r15
  mov    %edi,%eax
  mov    %esi,%r10d
  mov    %rcx,%rdi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %r8,-0x18(%rsp)
  test   %eax,%eax
  jle    L78
  mov    %eax,%r11d
  movsd  D5(%rip),%xmm0
  sub    $0x1,%eax
  xor    %esi,%esi
  shl    $0x3,%r11
  lea    0x8(%r9,%rax,8),%r8
  nopl   0x0(%rax,%rax,1)
L69:
  mov    %r9,%rax
  nopl   0x0(%rax,%rax,1)
L125:
  mov    (%rax),%rcx
  add    $0x8,%rax
  movq   $0x0,(%rcx,%rsi,1)
  cmp    %r8,%rax
  jne    L125
  mov    (%r9,%rsi,1),%rax
  movsd  %xmm0,(%rax,%rsi,1)
  add    $0x8,%rsi
  cmp    %rsi,%r11
  jne    L69
L78:
  lea    -0x1(%rdx),%r8d
  cmp    %r10d,%r8d
  jle    L77
  lea    0x1(%r10),%esi
  movslq %r8d,%r8
  pxor   %xmm1,%xmm1
  mov    %edx,%r11d
  mov    %esi,-0x10(%rsp)
  lea    0x1(%rdx),%esi
  movsd  D5(%rip),%xmm2
  lea    0x0(,%r8,8),%rax
  mov    %esi,-0xc(%rsp)
L70:
  mov    %r8d,%r13d
  mov    %r8d,%esi
  lea    -0x8(%rax),%rcx
  movslq %r11d,%r10
  cmp    %r11d,%edx
  jl     L72
  nopw   0x0(%rax,%rax,1)
L140:
  mov    (%rdi,%r10,8),%rbx
  movsd  (%rbx,%rcx,1),%xmm0
  mov    (%r9,%r10,8),%rbx
  add    $0x1,%r10
  movsd  %xmm0,(%rbx,%rax,1)
  cmp    %r10d,%edx
  jge    L140
L72:
  mov    -0x18(%rsp),%rbx
  movslq (%rbx,%r8,4),%r10
  cmp    %r10d,%r8d
  jne    L75
L23:
  sub    $0x1,%r8
  sub    $0x1,%r11d
  mov    %rcx,%rax
  cmp    -0x10(%rsp),%r11d
  jne    L70
L77:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L75:
  mov    (%r9,%r10,8),%rbx
  mov    (%r9,%rax,1),%rbp
  lea    0x10(%rax),%r12
  lea    0x0(%rbp,%r12,1),%r15
  lea    (%rbx,%rax,1),%r10
  add    %rbp,%rax
  cmp    %r15,%r10
  setae  %r15b
  add    %rbx,%r12
  cmp    %r12,%rax
  setae  %r12b
  or     %r15b,%r12b
  je     L147
  mov    %edx,%r12d
  sub    %r13d,%r12d
  cmp    $0x1,%r12d
  seta   %r12b
  cmp    %r8d,%edx
  setge  %r14b
  test   %r14b,%r12b
  je     L147
  mov    -0xc(%rsp),%r14d
  mov    $0x1,%r15d
  sub    %r13d,%r14d
  cmp    %esi,%edx
  cmovl  %r15d,%r14d
  xor    %r12d,%r12d
  mov    %r14d,%r13d
  shr    %r13d
  shl    $0x4,%r13
  nopl   (%rax)
L81:
  movupd (%r10,%r12,1),%xmm3
  movups %xmm3,(%rax,%r12,1)
  movups %xmm1,(%r10,%r12,1)
  add    $0x10,%r12
  cmp    %r12,%r13
  jne    L81
  mov    %r14d,%eax
  and    $0xfffffffe,%eax
  add    %eax,%esi
  cmp    %eax,%r14d
  je     L36
  movslq %esi,%rsi
  lea    (%rbx,%rsi,8),%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,0x0(%rbp,%rsi,8)
  movq   $0x0,(%rax)
L36:
  movsd  %xmm2,(%r10)
  jmp    L23
L147:
  mov    %r8,%rax
  nopl   0x0(%rax,%rax,1)
L45:
  movsd  (%rbx,%rax,8),%xmm0
  movsd  %xmm0,0x0(%rbp,%rax,8)
  movq   $0x0,(%rbx,%rax,8)
  add    $0x1,%rax
  cmp    %eax,%edx
  jge    L45
  jmp    L36
```

tool_calls: name: disassemble_data
arguments: data_tag: D5
type_guessed: f64

tool: D5: 1

assistant: ```c
void ElTran(int dim, int low, int high, double **a, int *interchanged, double **z) {
  int i, j, mp;
  for (j = 0; j < dim; j++) {
    for (i = 0; i < dim; i++)
      z[i][j] = 0.0;
    z[j][j] = 1.0;
  }
  for (mp = high - 1; mp >= low + 1; mp--) {
    for (i = mp + 1; i <= high; i++)
      z[i][mp] = a[i][mp - 1];
    i = interchanged[mp];
    if (i != mp) {
      for (j = mp; j <= high; j++) {
        z[mp][j] = z[i][j];
        z[i][j] = 0.0;
      }
      z[i][mp] = 1.0;
    }
  }
}
```