user: 下面的汇编指令对应的C源代码是什么:

```asm
<Q_atof>:
  endbr64
  jmp    L55
  cs nopw 0x0(%rax,%rax,1)
L196:
  add    $0x1,%rdi
L55:
  movzbl (%rdi),%eax
  test   %al,%al
  je     L108
  cmp    $0x20,%al
  jle    L196
L108:
  movsd  D20(%rip),%xmm4
  mov    $0x1,%edx
  cmp    $0x2d,%al
  jne    L121
  movsd  D58(%rip),%xmm4
  movzbl 0x1(%rdi),%eax
  mov    $0xffffffff,%edx
  add    $0x1,%rdi
L121:
  cmp    $0x30,%al
  je     L95
  cmp    $0x27,%al
  je     L103
L127:
  movsd  D32(%rip),%xmm3
  xor    %edx,%edx
  mov    $0xffffffff,%esi
  pxor   %xmm0,%xmm0
  movsd  D25(%rip),%xmm2
L147:
  movsbl (%rdi),%eax
  add    $0x1,%rdi
  cmp    $0x2e,%al
  je     L35
L137:
  lea    -0x30(%rax),%ecx
  cmp    $0x9,%ecx
  ja     L179
  mulsd  %xmm3,%xmm0
  pxor   %xmm1,%xmm1
  add    $0x1,%rdi
  add    $0x1,%edx
  cvtsi2sd %eax,%xmm1
  movsbl -0x1(%rdi),%eax
  addsd  %xmm1,%xmm0
  subsd  %xmm2,%xmm0
  cmp    $0x2e,%al
  jne    L137
L35:
  mov    %edx,%esi
  jmp    L147
  nopw   0x0(%rax,%rax,1)
L179:
  cmp    $0xffffffff,%esi
  je     L190
  movsd  D32(%rip),%xmm1
  cmp    %edx,%esi
  jge    L190
  nopl   0x0(%rax)
L44:
  divsd  %xmm1,%xmm0
  sub    $0x1,%edx
  cmp    %edx,%esi
  jne    L44
L190:
  mulsd  %xmm4,%xmm0
  cvtsd2ss %xmm0,%xmm0
  ret
  nopl   0x0(%rax)
L95:
  movzbl 0x1(%rdi),%eax
  and    $0xffffffdf,%eax
  cmp    $0x58,%al
  jne    L127
  movsd  D29(%rip),%xmm2
  movsd  D75(%rip),%xmm7
  add    $0x2,%rdi
  pxor   %xmm1,%xmm1
  movsd  D32(%rip),%xmm5
  movsd  D30(%rip),%xmm6
  movsd  D25(%rip),%xmm3
  nop
L109:
  movsbl (%rdi),%eax
  add    $0x1,%rdi
  lea    -0x30(%rax),%edx
  cmp    $0x9,%edx
  ja     L151
L168:
  mulsd  %xmm2,%xmm1
  pxor   %xmm0,%xmm0
  add    $0x1,%rdi
  cvtsi2sd %eax,%xmm0
  movsbl -0x1(%rdi),%eax
  lea    -0x30(%rax),%edx
  addsd  %xmm0,%xmm1
  subsd  %xmm3,%xmm1
  cmp    $0x9,%edx
  jbe    L168
L151:
  lea    -0x61(%rax),%edx
  cmp    $0x5,%edx
  ja     L51
  mulsd  %xmm2,%xmm1
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  addsd  %xmm0,%xmm1
  subsd  %xmm6,%xmm1
  addsd  %xmm5,%xmm1
  jmp    L109
  nopl   (%rax)
L103:
  movsbl 0x1(%rdi),%eax
  pxor   %xmm0,%xmm0
  imul   %edx,%eax
  cvtsi2ss %eax,%xmm0
  ret
  nopl   0x0(%rax,%rax,1)
L51:
  lea    -0x41(%rax),%edx
  cmp    $0x5,%edx
  ja     L96
  mulsd  %xmm2,%xmm1
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  addsd  %xmm0,%xmm1
  subsd  %xmm7,%xmm1
  addsd  %xmm5,%xmm1
  jmp    L109
  nopl   (%rax)
L96:
  mulsd  %xmm4,%xmm1
  pxor   %xmm0,%xmm0
  cvtsd2ss %xmm1,%xmm0
  ret
```

tool_calls: name: read_data
arguments: tag: D20
datatype: byte[8]
name: read_data
arguments: tag: D58
datatype: byte[8]
name: read_data
arguments: tag: D32
datatype: byte[8]
name: read_data
arguments: tag: D25
datatype: byte[8]
name: read_data
arguments: tag: D29
datatype: byte[8]
name: read_data
arguments: tag: D75
datatype: byte[8]
name: read_data
arguments: tag: D30
datatype: byte[8]

tool: {"D20": [0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x3f]}

tool: {"D58": [0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0xbf]}

tool: {"D32": [0x00,0x00,0x00,0x00,0x00,0x00,0x24,0x40]}

tool: {"D25": [0x00,0x00,0x00,0x00,0x00,0x00,0x48,0x40]}

tool: {"D29": [0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x40]}

tool: {"D75": [0x00,0x00,0x00,0x00,0x00,0x40,0x50,0x40]}

tool: {"D30": [0x00,0x00,0x00,0x00,0x00,0x40,0x58,0x40]}

assistant: ```c
float Q_atof(char *str) {
  double val;
  int sign;
  int c;
  int decimal, total;
  while ((*str) && (*str <= ' ')) {
    str++;
  }
  if (*str == '-') {
    sign = -1;
    str++;
  } else
    sign = 1;
  val = 0;
  if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) {
    str += 2;
    while (1) {
      c = *str++;
      if (c >= '0' && c <= '9')
        val = (val * 16) + c - '0';
      else if (c >= 'a' && c <= 'f')
        val = (val * 16) + c - 'a' + 10;
      else if (c >= 'A' && c <= 'F')
        val = (val * 16) + c - 'A' + 10;
      else
        return val * sign;
    }
  }
  if (str[0] == '\'') {
    return sign * str[1];
  }
  decimal = -1;
  total = 0;
  while (1) {
    c = *str++;
    if (c == '.') {
      decimal = total;
      continue;
    }
    if (c < '0' || c > '9')
      break;
    val = val * 10 + c - '0';
    total++;
  }
  if (decimal == -1)
    return val * sign;
  while (total > decimal) {
    val /= 10;
    total--;
  }
  return val * sign;
}
```