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

```asm
<read_temp_sensor>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdi,%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <TouchReset@plt>
  mov    $0x55,%edi
  call   <TouchByte@plt>
  lea    0x7(%rbp),%rbx
L39:
  movzbl (%rbx),%edi
  call   <TouchByte@plt>
  mov    %rbx,%rax
  sub    $0x1,%rbx
  cmp    %rbp,%rax
  jne    L39
  mov    $0xbe,%edi
  call   <TouchByte@plt>
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x1(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x2(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x3(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x4(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x5(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x6(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %al,0x7(%rsp)
  mov    $0xff,%edi
  call   <TouchByte@plt>
  mov    %eax,%r13d
  mov    $0x0,%eax
  call   <TouchReset@plt>
  movzbl (%rsp),%ebx
  shr    %bl
  cmpb   $0x0,0x1(%rsp)
  je     L40
  or     $0xffffff80,%ebx
L40:
  movzbl 0x7(%rsp),%eax
  mov    D19(%rip),%r12d
  test   %al,%al
  je     L29
  movzbl %al,%eax
  movzbl 0x6(%rsp),%ecx
  mov    %eax,%edx
  sub    %ecx,%edx
  pxor   %xmm1,%xmm1
  cvtsi2ss %edx,%xmm1
  pxor   %xmm0,%xmm0
  cvtsi2ss %eax,%xmm0
  divss  %xmm0,%xmm1
  movd   %xmm1,%r12d
L29:
  mov    %rsp,%rdi
  mov    $0x8,%esi
  call   <CHECKSUM@plt>
  cmp    %r13b,%al
  jne    L8
  movsbl %bl,%ebx
  pxor   %xmm0,%xmm0
  cvtsi2sd %ebx,%xmm0
  subsd  D12(%rip),%xmm0
  movd   %r12d,%xmm2
  pxor   %xmm1,%xmm1
  cvtss2sd %xmm2,%xmm1
  addsd  %xmm1,%xmm0
  cvtsd2ss %xmm0,%xmm0
L15:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L35
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L8:
  mov    $0x0,%eax
  call   <global_temp_sample@plt>
  mov    $0x258,%edi
  call   <delay@plt>
  mov    %rbp,%rdi
  call   <read_temp_sensor>
  jmp    L15
L35:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: label: D19
type: f32
name: read_data
arguments: label: D12
type: byte[8]

tool: D19: 0.25

tool: {"D12": [0x00,0x00,0x00,0x00,0x00,0x00,0xd0,0x3f]}

assistant: ```c
float read_temp_sensor(unsigned char *serialnumber) {
  int serialnumber_loop;
  unsigned char BYTE[8], CRC;
  signed char degree;
  float degree_fraction, sensor_temp_reading;
  TouchReset();
  TouchByte(0x55);
  for (serialnumber_loop = 7; serialnumber_loop >= 0; serialnumber_loop--) {
    TouchByte(serialnumber[serialnumber_loop]);
  }
  TouchByte(0xBE);
  BYTE[0] = TouchByte(0xFF);
  BYTE[1] = TouchByte(0xFF);
  BYTE[2] = TouchByte(0xFF);
  BYTE[3] = TouchByte(0xFF);
  BYTE[4] = TouchByte(0xFF);
  BYTE[5] = TouchByte(0xFF);
  BYTE[6] = TouchByte(0xFF);
  BYTE[7] = TouchByte(0xFF);
  CRC = TouchByte(0xFF);
  TouchReset();
  degree = BYTE[0] >> 1;
  if (BYTE[1] != 0) {
    degree = degree | 0x80;
  }
  if (BYTE[7] != 0) {
    degree_fraction = ((float)(BYTE[7] - BYTE[6])) / ((float)BYTE[7]);
  } else {
    degree_fraction = 0.25;
  }
  sensor_temp_reading = ((float)degree) - 0.25 + degree_fraction;
  if (CRC != CHECKSUM(BYTE, sizeof(BYTE))) {
    global_temp_sample();
    delay(600);
    sensor_temp_reading = read_temp_sensor(serialnumber);
  }
  return (sensor_temp_reading);
}
```