user: 请从给定的汇编指令推导出C源代码:

```asm
<Get_var_itemsize>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rsi,%rbx
  mov    %rdx,%rbp
  lea    D3(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x4,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  jne    L95
L79:
  mov    %edx,0x0(%rbp)
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L95:
  lea    D12(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x4,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  je     L79
  lea    D82(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x8,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  je     L79
  lea    D62(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x8,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  je     L79
  lea    D49(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x8,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  je     L79
  lea    D30(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x8,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  je     L79
  lea    D94(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    %rax,%rcx
  mov    $0x8,%edx
  mov    $0x0,%eax
  test   %rcx,%rcx
  je     L79
  lea    D4(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L40
  mov    $0x8,%edx
  mov    $0x0,%eax
  jmp    L79
L40:
  lea    D0(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L84
  mov    $0x8,%edx
  mov    $0x0,%eax
  jmp    L79
L84:
  lea    D9(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  cmp    $0x1,%rax
  sbb    %edx,%edx
  and    $0x8,%edx
  cmp    $0x1,%rax
  sbb    %eax,%eax
  add    $0x1,%eax
  jmp    L79
```

tool_calls: name: disassemble_data
arguments: label: D3
datatype: string
name: disassemble_data
arguments: label: D12
datatype: string
name: disassemble_data
arguments: label: D82
datatype: string
name: disassemble_data
arguments: label: D62
datatype: string
name: disassemble_data
arguments: label: D49
datatype: string
name: disassemble_data
arguments: label: D30
datatype: string
name: disassemble_data
arguments: label: D94
datatype: string
name: disassemble_data
arguments: label: D4
datatype: string
name: disassemble_data
arguments: label: D0
datatype: string
name: disassemble_data
arguments: label: D9
datatype: string

tool: D3: model_grid_cell__row_index

tool: D12: model_grid_cell__column_index

tool: D82: cyclone__magnitude_of_velocity

tool: D62: cyclone__azimuth_angle_of_velocity

tool: D49: atmosphere_bottom_air__pressure

tool: D30: atmosphere_bottom_air__reference_pressure

tool: D94: cyclone_air_flow_max_speed__radius

tool: D4: cyclone__radius

tool: D0: atmosphere_air_flow__east_component_of_velocity

tool: D9: atmosphere_air_flow__north_component_of_velocity

assistant: ```c
int Get_var_itemsize(void *self, const char *name, int *itemsize) {
  if (strcmp(name, "model_grid_cell__row_index") == 0) {
    *itemsize = sizeof(int);
  } else if (strcmp(name, "model_grid_cell__column_index") == 0) {
    *itemsize = sizeof(int);
  } else if (strcmp(name, "cyclone__magnitude_of_velocity") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "cyclone__azimuth_angle_of_velocity") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "atmosphere_bottom_air__pressure") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "atmosphere_bottom_air__reference_pressure") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "cyclone_air_flow_max_speed__radius") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "cyclone__radius") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "atmosphere_air_flow__east_component_of_velocity") == 0) {
    *itemsize = sizeof(double);
  } else if (strcmp(name, "atmosphere_air_flow__north_component_of_velocity") == 0) {
    *itemsize = sizeof(double);
  } else {
    *itemsize = 0;
    return (1);
  }
  return (0);
}
```