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

```asm
<one_step_rk4>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,%rbp
  movsd  %xmm0,0x8(%rsp)
  mov    %rsi,%rbx
  mov    %edx,%r13d
  mov    %rcx,%r14
  mov    (%rcx),%r15
  movq   %r15,%xmm1
  call   <set_wieners@plt>
  mov    0x8(%rbx),%rsi
  mov    %r13d,%edx
  mov    %rbp,%rdi
  movq   %r15,%xmm0
  call   <my_rhs@plt>
  test   %r13d,%r13d
  jle    L53
  mov    %r13d,%r12d
  shl    $0x3,%r12
  mov    $0x0,%eax
  movsd  D36(%rip),%xmm2
  movsd  D44(%rip),%xmm1
L11:
  mov    (%rbx),%rdx
  mov    0x8(%rbx),%rcx
  movsd  0x8(%rsp),%xmm3
  movapd %xmm3,%xmm0
  mulsd  (%rcx,%rax,1),%xmm0
  divsd  %xmm2,%xmm0
  addsd  0x0(%rbp,%rax,1),%xmm0
  movsd  %xmm0,(%rdx,%rax,1)
  mov    0x10(%rbx),%rdx
  mov    0x8(%rbx),%rcx
  mulsd  (%rcx,%rax,1),%xmm3
  movapd %xmm3,%xmm0
  mulsd  %xmm1,%xmm0
  addsd  0x0(%rbp,%rax,1),%xmm0
  movsd  %xmm0,(%rdx,%rax,1)
  add    $0x8,%rax
  cmp    %r12,%rax
  jne    L11
  movsd  0x8(%rsp),%xmm5
  mulsd  D44(%rip),%xmm5
  movsd  %xmm5,0x10(%rsp)
  movq   %r15,%xmm6
  addsd  %xmm5,%xmm6
  movsd  %xmm6,0x18(%rsp)
  mov    0x8(%rbx),%rsi
  mov    0x10(%rbx),%rdi
  mov    %r13d,%edx
  movapd %xmm6,%xmm0
  call   <my_rhs@plt>
  mov    $0x0,%eax
  movsd  D61(%rip),%xmm1
L52:
  mov    %rax,%rdx
  add    (%rbx),%rdx
  mov    0x8(%rbx),%rcx
  movsd  0x8(%rsp),%xmm0
  mulsd  (%rcx,%rax,1),%xmm0
  divsd  %xmm1,%xmm0
  addsd  (%rdx),%xmm0
  movsd  %xmm0,(%rdx)
  mov    0x10(%rbx),%rdx
  mov    0x8(%rbx),%rcx
  movsd  0x10(%rsp),%xmm0
  mulsd  (%rcx,%rax,1),%xmm0
  addsd  0x0(%rbp,%rax,1),%xmm0
  movsd  %xmm0,(%rdx,%rax,1)
  add    $0x8,%rax
  cmp    %r12,%rax
  jne    L52
  mov    0x8(%rbx),%rsi
  mov    0x10(%rbx),%rdi
  mov    %r13d,%edx
  movsd  0x18(%rsp),%xmm0
  call   <my_rhs@plt>
  mov    $0x0,%eax
  movsd  D61(%rip),%xmm1
L14:
  mov    %rax,%rdx
  add    (%rbx),%rdx
  mov    0x8(%rbx),%rcx
  movsd  0x8(%rsp),%xmm4
  movapd %xmm4,%xmm0
  mulsd  (%rcx,%rax,1),%xmm0
  divsd  %xmm1,%xmm0
  addsd  (%rdx),%xmm0
  movsd  %xmm0,(%rdx)
  mov    0x10(%rbx),%rdx
  mov    0x8(%rbx),%rcx
  mulsd  (%rcx,%rax,1),%xmm4
  movapd %xmm4,%xmm0
  addsd  0x0(%rbp,%rax,1),%xmm0
  movsd  %xmm0,(%rdx,%rax,1)
  add    $0x8,%rax
  cmp    %r12,%rax
  jne    L14
  movq   %r15,%xmm7
  addsd  0x8(%rsp),%xmm7
  movq   %xmm7,%r15
  mov    0x8(%rbx),%rsi
  mov    0x10(%rbx),%rdi
  mov    %r13d,%edx
  movapd %xmm7,%xmm0
  call   <my_rhs@plt>
  mov    $0x0,%eax
  movsd  D36(%rip),%xmm1
L6:
  mov    0x8(%rbx),%rdx
  movsd  0x8(%rsp),%xmm0
  mulsd  (%rdx,%rax,1),%xmm0
  divsd  %xmm1,%xmm0
  mov    (%rbx),%rdx
  addsd  (%rdx,%rax,1),%xmm0
  movsd  %xmm0,0x0(%rbp,%rax,1)
  add    $0x8,%rax
  cmp    %r12,%rax
  jne    L6
L57:
  mov    %r15,(%r14)
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L53:
  movsd  0x8(%rsp),%xmm0
  mulsd  D44(%rip),%xmm0
  movapd %xmm0,%xmm7
  movq   %r15,%xmm5
  addsd  %xmm5,%xmm7
  movq   %xmm7,%rbp
  mov    0x8(%rbx),%rsi
  mov    0x10(%rbx),%rdi
  mov    %r13d,%edx
  movapd %xmm7,%xmm0
  call   <my_rhs@plt>
  mov    0x8(%rbx),%rsi
  mov    0x10(%rbx),%rdi
  mov    %r13d,%edx
  movq   %rbp,%xmm0
  call   <my_rhs@plt>
  movq   %r15,%xmm7
  addsd  0x8(%rsp),%xmm7
  movq   %xmm7,%r15
  mov    0x8(%rbx),%rsi
  mov    0x10(%rbx),%rdi
  mov    %r13d,%edx
  movapd %xmm7,%xmm0
  call   <my_rhs@plt>
  jmp    L57
```

tool_calls: name: extract_symbolic_data
arguments: tag: D36
type_guessed: f64
name: extract_symbolic_data
arguments: tag: D44
type_guessed: f64
name: extract_symbolic_data
arguments: tag: D61
type_guessed: f64

tool: D36: 6

tool: D44: 0.5

tool: D61: 3

assistant: ```c
void one_step_rk4(double *y, double dt, double *yval[3], int neq, double *tim) {
  int i;
  double t = *tim, t1, t2;
  set_wieners(dt, y, t);
  my_rhs(t, y, yval[1], neq);
  for (i = 0; i < neq; i++) {
    yval[0][i] = y[i] + dt * yval[1][i] / 6.00;
    yval[2][i] = y[i] + dt * yval[1][i] * 0.5;
  }
  t1 = t + .5 * dt;
  my_rhs(t1, yval[2], yval[1], neq);
  for (i = 0; i < neq; i++) {
    yval[0][i] = yval[0][i] + dt * yval[1][i] / 3.00;
    yval[2][i] = y[i] + .5 * dt * yval[1][i];
  }
  my_rhs(t1, yval[2], yval[1], neq);
  for (i = 0; i < neq; i++) {
    yval[0][i] = yval[0][i] + dt * yval[1][i] / 3.000;
    yval[2][i] = y[i] + dt * yval[1][i];
  }
  t2 = t + dt;
  my_rhs(t2, yval[2], yval[1], neq);
  for (i = 0; i < neq; i++)
    y[i] = yval[0][i] + dt * yval[1][i] / 6.00;
  *tim = t2;
}
```