src
Functions
s_to_n32_unsafe.cc File Reference
#include <limits>
#include "src/util/s_to_n32_unsafe.h"
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Functions

bool s_to_u32_unsafe (const char *s, const char *s_end, uint32_t &number)
 
bool s_to_i32_unsafe (const char *s, const char *s_end, int32_t &number)
 

Function Documentation

bool s_to_i32_unsafe ( const char *  s,
const char *  s_end,
int32_t &  number 
)

Definition at line 25 of file s_to_n32_unsafe.cc.

26 {
27  int64_t i = 0;
28  if (*s == '-')
29  {
30  ++s;
31  for (; s != s_end; ++s)
32  {
33  i *= 10;
34  i -= *s - 0x30;
35  if (i < std::numeric_limits<int32_t>::min())
36  {
37  return false;
38  }
39  }
40  }
41  else
42  {
43  for (; s != s_end; ++s)
44  {
45  i *= 10;
46  i += *s - 0x30;
47  if (i > std::numeric_limits<int32_t>::max())
48  {
49  return false;
50  }
51  }
52  }
53  number = static_cast<int32_t> (i);
54  return true;
55 }

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bool s_to_u32_unsafe ( const char *  s,
const char *  s_end,
uint32_t &  number 
)

Definition at line 7 of file s_to_n32_unsafe.cc.

8 {
9  uint64_t u = 0;
10  for (; s != s_end; ++s)
11  {
12  u *= 10;
13  u += static_cast<uint32_t> (*s) - 0x30;
14  if (u >= std::numeric_limits<uint32_t>::max())
15  {
16  return false;
17  }
18  }
19  number = static_cast<uint32_t> (u);
20  return true;
21 }

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