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

```asm
<amplstr>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    %rsi,%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x8(%rsp),%rsi
  call   <strtod@plt>
  movsd  %xmm0,0x10(%rsp)
  mov    0x8(%rsp),%r12
  cmpb   $0x0,(%r12)
  je     L112
  movq   %xmm0,%rbx
  lea    D103(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  je     L38
  lea    D26(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L281
  movq   %rbx,%xmm0
  subsd  D148(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
L38:
  test   %eax,%eax
  jne    L163
  test   %rbp,%rbp
  je     L163
  movsd  0x10(%rsp),%xmm0
  movsd  %xmm0,0x0(%rbp)
L163:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L196
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L281:
  lea    D196(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L304
  movq   %rbx,%xmm0
  addsd  D204(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  jmp    L38
L304:
  lea    D122(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L311
  movq   %rbx,%xmm0
  subsd  D191(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  jmp    L38
L311:
  lea    D200(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L282
  movq   %rbx,%xmm0
  subsd  D173(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  jmp    L38
L282:
  lea    D198(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L6
  movq   %rbx,%xmm0
  addsd  D190(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  jmp    L38
L6:
  lea    D64(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L36
  movq   %rbx,%xmm0
  subsd  D49(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  jmp    L38
L36:
  lea    D70(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L92
  movq   %rbx,%xmm0
  subsd  D181(%rip),%xmm0
  movsd  %xmm0,0x10(%rsp)
  jmp    L38
L92:
  lea    D42(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  je     L185
  lea    D113(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  je     L189
  lea    D211(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  je     L270
  lea    D158(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  je     L158
  lea    D242(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  je     L143
  lea    D108(%rip),%rsi
  mov    %r12,%rdi
  call   <strcasecmp@plt>
  test   %eax,%eax
  jne    L291
  lea    0x10(%rsp),%rdi
  movsd  D239(%rip),%xmm0
  call   <_vtodb@plt>
  jmp    L38
L185:
  lea    0x10(%rsp),%rdi
  movsd  D204(%rip),%xmm0
  call   <_vtodb@plt>
  jmp    L38
L189:
  lea    0x10(%rsp),%rdi
  movsd  D229(%rip),%xmm0
  call   <_vtodb@plt>
  jmp    L38
L270:
  lea    0x10(%rsp),%rdi
  movsd  D188(%rip),%xmm0
  call   <_vtodb@plt>
  jmp    L38
L158:
  lea    0x10(%rsp),%rdi
  movsd  D190(%rip),%xmm0
  call   <_vtodb@plt>
  jmp    L38
L143:
  lea    0x10(%rsp),%rdi
  movsd  D252(%rip),%xmm0
  call   <_vtodb@plt>
  jmp    L38
L112:
  mov    $0xffffffff,%eax
  jmp    L163
L291:
  mov    $0xffffffff,%eax
  jmp    L163
L196:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_label: D103
type: string
name: retrieve_data
arguments: data_label: D26
type: string
name: retrieve_data
arguments: data_label: D148
type: f64
name: retrieve_data
arguments: data_label: D196
type: string
name: retrieve_data
arguments: data_label: D204
type: f64
name: retrieve_data
arguments: data_label: D122
type: string
name: retrieve_data
arguments: data_label: D191
type: f64
name: retrieve_data
arguments: data_label: D200
type: string
name: retrieve_data
arguments: data_label: D173
type: f64
name: retrieve_data
arguments: data_label: D198
type: string
name: retrieve_data
arguments: data_label: D190
type: f64
name: retrieve_data
arguments: data_label: D64
type: string
name: retrieve_data
arguments: data_label: D49
type: f64
name: retrieve_data
arguments: data_label: D70
type: string
name: retrieve_data
arguments: data_label: D181
type: f64
name: retrieve_data
arguments: data_label: D42
type: string
name: retrieve_data
arguments: data_label: D113
type: string
name: retrieve_data
arguments: data_label: D211
type: string
name: retrieve_data
arguments: data_label: D158
type: string
name: retrieve_data
arguments: data_label: D242
type: string
name: retrieve_data
arguments: data_label: D108
type: string
name: retrieve_data
arguments: data_label: D239
type: byte[8]
name: retrieve_data
arguments: data_label: D229
type: byte[8]
name: retrieve_data
arguments: data_label: D188
type: byte[8]
name: retrieve_data
arguments: data_label: D252
type: byte[8]

tool: D103: dbm

tool: D26: dbf

tool: D148: 120

tool: D196: dbv

tool: D204: 13

tool: D122: dbmv

tool: D191: 47

tool: D200: dbuv

tool: D173: 107

tool: D198: dbemfv

tool: D190: 7

tool: D64: dbemfmv

tool: D49: 53

tool: D70: dbemfuv

tool: D181: 113

tool: D42: v

tool: D113: mv

tool: D211: uv

tool: D158: emfv

tool: D242: emfmv

tool: D108: emfmuv

tool: {"D239": [0x00,0x00,0x00,0x00,0x00,0x40,0x5c,0xc0]}

tool: {"D229": [0x00,0x00,0x00,0x00,0x00,0x80,0x47,0xc0]}

tool: {"D188": [0x00,0x00,0x00,0x00,0x00,0xc0,0x5a,0xc0]}

tool: {"D252": [0x00,0x00,0x00,0x00,0x00,0x80,0x4a,0xc0]}

assistant: ```c
int amplstr(char *str, double *ampl) {
  int result = 0;
  char *end;
  double a = strtod(str, &end);
  if (!*end)
    result = -1;
  else if (!strcasecmp(end, "dbm"))
    ;
  else if (!strcasecmp(end, "dbf"))
    a -= 120.0;
  else if (!strcasecmp(end, "dbv"))
    a += 13.0;
  else if (!strcasecmp(end, "dbmv"))
    a -= 47.0;
  else if (!strcasecmp(end, "dbuv"))
    a -= 107.0;
  else if (!strcasecmp(end, "dbemfv"))
    a += 7.0;
  else if (!strcasecmp(end, "dbemfmv"))
    a -= 53.0;
  else if (!strcasecmp(end, "dbemfuv"))
    a -= 113.0;
  else if (!strcasecmp(end, "v"))
    result = _vtodb(&a, 13.0);
  else if (!strcasecmp(end, "mv"))
    result = _vtodb(&a, -47.0);
  else if (!strcasecmp(end, "uv"))
    result = _vtodb(&a, -107.0);
  else if (!strcasecmp(end, "emfv"))
    result = _vtodb(&a, 7.0);
  else if (!strcasecmp(end, "emfmv"))
    result = _vtodb(&a, -53.0);
  else if (!strcasecmp(end, "emfmuv"))
    result = _vtodb(&a, -113.0);
  else
    result = -1;
  if (result == 0 && ampl != NULL)
    *ampl = a;
  return result;
}
```