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

```asm
<d2Sdiag2D>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  mov    %rdx,%r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x128,%rsp
  cvttsd2si (%r9),%edx
  movsd  (%r8),%xmm1
  mov    %rdi,0x68(%rsp)
  cvttsd2si 0x8(%r9),%edi
  mov    %rsi,0x70(%rsp)
  mulsd  0x8(%r8),%xmm1
  mulsd  0x10(%rcx),%xmm1
  mov    %fs:0x28,%rax
  mov    %rax,0x118(%rsp)
  xor    %eax,%eax
  lea    0x1(%rdi),%r12d
  lea    0x1(%rdx),%eax
  mov    %edi,0x54(%rsp)
  imul   %eax,%r12d
  test   %edx,%edx
  jle    L2
  cltq
  lea    0x8(,%rax,8),%r10
  test   %edi,%edi
  jle    L2
  movslq %edx,%rax
  lea    0x90(%rsp),%rdx
  movslq %r12d,%r12
  movq   $0x0,0x60(%rsp)
  mov    %rax,0x78(%rsp)
  lea    -0x8(%r10),%rax
  mov    %r12,%r11
  pxor   %xmm2,%xmm2
  mov    %rdx,0x28(%rsp)
  lea    0xb0(%rsp),%rdx
  lea    0x80(%rsp),%rsi
  mov    %rax,0x58(%rsp)
  lea    0x100(%rsp),%rax
  lea    0xc0(%rsp),%r15
  mov    %rdx,0x18(%rsp)
  lea    0xa0(%rsp),%rdx
  lea    0xf0(%rsp),%r14
  mov    %rax,0x10(%rsp)
  lea    0xe0(%rsp),%rax
  mov    %rsi,0x20(%rsp)
  mov    %rdx,0x30(%rsp)
  mov    %rax,0x8(%rsp)
  lea    0xd0(%rsp),%rax
  mov    %rax,%r12
  cs nopw 0x0(%rax,%rax,1)
L11:
  mov    0x60(%rsp),%rax
  movl   $0x0,0x50(%rsp)
  lea    0x0(,%rax,8),%rbx
  mov    0x70(%rsp),%rax
  lea    (%rax,%rbx,1),%rbp
  add    0x68(%rsp),%rbx
  nopl   0x0(%rax,%rax,1)
L43:
  movsd  0x0(%rbp),%xmm6
  movsd  0x8(%rbp),%xmm5
  sub    $0x8,%rsp
  lea    0x0(%rbp,%r10,1),%rax
  movaps %xmm2,0xd8(%rsp)
  mov    %r12,%rcx
  mov    %r15,%rdx
  movsd  -0x8(%rbp,%r10,1),%xmm3
  movapd %xmm6,%xmm0
  movsd  0x0(%rbp,%r10,1),%xmm4
  movaps %xmm2,0xe8(%rsp)
  addsd  %xmm5,%xmm0
  movaps %xmm2,0xf8(%rsp)
  movaps %xmm2,0x108(%rsp)
  mov    %r10,0x50(%rsp)
  addsd  %xmm3,%xmm0
  mov    %r11,0x48(%rsp)
  addsd  %xmm4,%xmm0
  mulsd  D10(%rip),%xmm0
  movsd  %xmm0,0xc8(%rsp)
  movsd  0x0(%rbp,%r11,8),%xmm0
  unpcklpd %xmm0,%xmm6
  movaps %xmm6,0x88(%rsp)
  movsd  0x8(%rbp,%r11,8),%xmm6
  unpcklpd %xmm6,%xmm5
  addsd  %xmm6,%xmm0
  movaps %xmm5,0x98(%rsp)
  movsd  (%rax,%r11,8),%xmm5
  unpcklpd %xmm5,%xmm4
  movaps %xmm4,0xb8(%rsp)
  movsd  -0x8(%rax,%r11,8),%xmm4
  addsd  %xmm4,%xmm0
  unpcklpd %xmm4,%xmm3
  movaps %xmm3,0xa8(%rsp)
  addsd  %xmm5,%xmm0
  mulsd  D10(%rip),%xmm0
  movsd  %xmm0,0xd0(%rsp)
  movsd  0x0(%r13),%xmm0
  push   %r14
  mov    0x20(%rsp),%r9
  mov    0x18(%rsp),%r8
  mov    0x38(%rsp),%rsi
  mov    0x30(%rsp),%rdi
  movsd  %xmm1,0x48(%rsp)
  call   <d2SdiagTriangle@plt>
  movsd  0x48(%rsp),%xmm1
  mov    0x20(%rsp),%r8
  mov    %r14,%r9
  mov    0x18(%rsp),%rcx
  mov    0x28(%rsp),%rsi
  mov    %r15,%rdx
  mov    %r12,(%rsp)
  mov    0x38(%rsp),%rdi
  movsd  0x8(%r13),%xmm0
  call   <d2SdiagTriangle@plt>
  pop    %rax
  push   0x10(%rsp)
  mov    %r12,%r9
  movsd  0x48(%rsp),%xmm1
  mov    %r14,%r8
  mov    %r15,%rdx
  mov    0x20(%rsp),%rcx
  mov    0x40(%rsp),%rsi
  mov    0x28(%rsp),%rdi
  movsd  0x10(%r13),%xmm0
  call   <d2SdiagTriangle@plt>
  pop    %rdx
  push   0x18(%rsp)
  mov    %r14,%rcx
  movsd  0x48(%rsp),%xmm1
  mov    %r12,%r8
  mov    %r15,%rdx
  mov    0x30(%rsp),%rsi
  movsd  0x18(%r13),%xmm0
  mov    0x18(%rsp),%r9
  mov    0x40(%rsp),%rdi
  call   <d2SdiagTriangle@plt>
  movupd (%rbx),%xmm7
  mov    0x58(%rsp),%r10
  pxor   %xmm2,%xmm2
  movsd  0xe0(%rsp),%xmm0
  mov    0x50(%rsp),%r11
  lea    (%rbx,%r10,1),%rax
  mov    0x68(%rsp),%rcx
  addl   $0x1,0x60(%rsp)
  movhpd 0xf0(%rsp),%xmm0
  addpd  %xmm7,%xmm0
  add    %rcx,%rbp
  movups %xmm0,(%rbx)
  movupd -0x8(%rbx,%r10,1),%xmm7
  movsd  0x100(%rsp),%xmm0
  movhpd 0x110(%rsp),%xmm0
  addpd  %xmm7,%xmm0
  movups %xmm0,-0x8(%rbx,%r10,1)
  movupd (%rbx,%r11,8),%xmm7
  movsd  0xe8(%rsp),%xmm0
  movhpd 0xf8(%rsp),%xmm0
  addpd  %xmm7,%xmm0
  movups %xmm0,(%rbx,%r11,8)
  movupd -0x8(%rax,%r11,8),%xmm3
  add    %rcx,%rbx
  movsd  0x108(%rsp),%xmm0
  movhpd 0x118(%rsp),%xmm0
  addpd  %xmm3,%xmm0
  movups %xmm0,-0x8(%rax,%r11,8)
  mov    0x60(%rsp),%eax
  pop    %rcx
  pop    %rsi
  cmp    %eax,0x54(%rsp)
  movsd  0x38(%rsp),%xmm1
  jne    L43
  addq   $0x1,0x60(%rsp)
  mov    0x60(%rsp),%rax
  cmp    %rax,0x78(%rsp)
  jne    L11
L2:
  mov    0x118(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L14
  add    $0x128,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L14:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_tag: D10
datatype: f64

tool: D10: 0.25

assistant: ```c
void d2Sdiag2D(double *prod, const double *yc, const double *VRef, const double *alpha, const double *h, const double *m, const int n) {
  int idn, i1, i2, r, comp;
  double yA[2], yB[2], yC[2], yD[2], yM[2];
  double rA[2], rB[2], rC[2], rD[2];
  const int m1 = m[0], m2 = m[1];
  const int nn = (m1 + 1) * (m2 + 1);
  const double hd = h[0] * h[1];
  const double alphaVolume = alpha[2] * hd;
  const int inc_x = 1;
  const int inc_y = m1 + 1;
  const double *ptr;
  double *wptr;
#pragma omp parallel private(wptr, ptr, idn, i1, i2, r, comp, yA, yB, yC, yD, yM, rA, rB, rC, rD)
  {
#pragma omp for
    for (i1 = 0; i1 < m1; i1++) {
      for (i2 = 0; i2 < m2; i2++) {
        idn = i1 + i2 * (m1 + 1);
        comp = 0;
        for (r = 0; r < 2; r++) {
          ptr = yc + idn + comp;
          yA[r] = *ptr;
          ptr = ptr + inc_x;
          yB[r] = *ptr;
          ptr = ptr + inc_y;
          yD[r] = *ptr;
          ptr = ptr - inc_x;
          yC[r] = *ptr;
          yM[r] = 0.25 * (yA[r] + yB[r] + yC[r] + yD[r]);
          rA[r] = 0.0;
          rB[r] = 0.0;
          rC[r] = 0.0;
          rD[r] = 0.0;
          comp += nn;
        }
        d2SdiagTriangle(yA, yB, yM, VRef[0], rA, rB, rD, rC, alphaVolume);
        d2SdiagTriangle(yB, yD, yM, VRef[1], rB, rD, rC, rA, alphaVolume);
        d2SdiagTriangle(yD, yC, yM, VRef[2], rD, rC, rA, rB, alphaVolume);
        d2SdiagTriangle(yC, yA, yM, VRef[3], rC, rA, rB, rD, alphaVolume);
        comp = 0;
        for (r = 0; r < 2; r++) {
          wptr = prod + idn + comp;
#pragma omp atomic
          *wptr += rA[r];
          wptr += inc_x;
#pragma omp atomic
          *wptr += rB[r];
          wptr += inc_y;
#pragma omp atomic
          *wptr += rD[r];
          wptr -= inc_x;
#pragma omp atomic
          *wptr += rC[r];
          comp += nn;
        }
      }
    }
  }
}
```