user: 请从给定的汇编指令推导出C源代码:

```asm
<usage>:
  endbr64
  push   %rbp
  mov    %edi,%ebp
  lea    D144(%rip),%rdi
  call   <printf@plt>
  lea    D56(%rip),%rdi
  call   <printf@plt>
  lea    D68(%rip),%rdi
  call   <printf@plt>
  lea    D34(%rip),%rdi
  call   <printf@plt>
  lea    D124(%rip),%rdi
  call   <printf@plt>
  lea    D105(%rip),%rdi
  call   <printf@plt>
  lea    D130(%rip),%rdi
  call   <printf@plt>
  lea    D102(%rip),%rdi
  call   <printf@plt>
  lea    D85(%rip),%rdi
  call   <printf@plt>
  lea    D83(%rip),%rdi
  call   <printf@plt>
  lea    D15(%rip),%rdi
  call   <printf@plt>
  lea    D139(%rip),%rdi
  call   <printf@plt>
  lea    D2(%rip),%rdi
  call   <printf@plt>
  lea    D115(%rip),%rdi
  call   <printf@plt>
  lea    D5(%rip),%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  pop    %rbp
  jmp    1070 <exit@plt>
```

tool_calls: name: read_data
arguments: data_label: D144
type: string
name: read_data
arguments: data_label: D56
type: string
name: read_data
arguments: data_label: D68
type: string
name: read_data
arguments: data_label: D34
type: string
name: read_data
arguments: data_label: D124
type: string
name: read_data
arguments: data_label: D105
type: string
name: read_data
arguments: data_label: D130
type: string
name: read_data
arguments: data_label: D102
type: string
name: read_data
arguments: data_label: D85
type: string
name: read_data
arguments: data_label: D83
type: string
name: read_data
arguments: data_label: D15
type: string
name: read_data
arguments: data_label: D139
type: string
name: read_data
arguments: data_label: D2
type: string
name: read_data
arguments: data_label: D115
type: string
name: read_data
arguments: data_label: D5
type: string

tool: D144: 
Converts from DM to Dist and vice versa - electron density model


tool: D56: Usage:


tool: D68: ymw16 [-h] [-t text] [-d <dirname>] [-v] [-V] <mode> gl gb DM/Dist [DM_Host] ndir


tool: D34: -h prints this help page


tool: D124: -t <text>, where <text> (no spaces, max 64 char) is appended to the output line


tool: D105: -d <dirname>, where <dirname> is a directory containing YMW16 data files


tool: D130: -v prints diagnostics


tool: D102: -V prints more diagnostics


tool: D85: <mode> is Gal, MC, or IGM


tool: D83: gl, gb in deg, DM in cm^-3 pc, Dist in pc (Gal, MC) or Mpc (IGM)


tool: D15: DM_Host is the contribution of the FRB host galaxy to the observed DM


tool: D139: Only used for IGM mode; optional input, default=100 cm^-3 pc


tool: D2: ndir=1 for DM->Dist, ndir=2 for Dist->DM


tool: D115: Output includes log(tau_sc) where tau_sc is scattering time in sec at 1 GHz


tool: D5: 


assistant: ```c
void usage(int status) {
  printf("\nConverts from DM to Dist and vice versa - electron density model\n");
  printf("Usage:\n");
  printf("ymw16 [-h] [-t text] [-d <dirname>] [-v] [-V] <mode> gl gb DM/Dist [DM_Host] ndir\n");
  printf("-h prints this help page\n");
  printf("-t <text>, where <text> (no spaces, max 64 char) is appended to the output line\n");
  printf("-d <dirname>, where <dirname> is a directory containing YMW16 data files\n");
  printf("-v prints diagnostics\n");
  printf("-V prints more diagnostics\n");
  printf("<mode> is Gal, MC, or IGM\n");
  printf("gl, gb in deg, DM in cm^-3 pc, Dist in pc (Gal, MC) or Mpc (IGM)\n");
  printf("DM_Host is the contribution of the FRB host galaxy to the observed DM\n");
  printf("Only used for IGM mode; optional input, default=100 cm^-3 pc\n");
  printf("ndir=1 for DM->Dist, ndir=2 for Dist->DM\n");
  printf("Output includes log(tau_sc) where tau_sc is scattering time in sec at 1 GHz\n");
  printf("\n");
  exit(status);
}
```