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moved BE case before LE to improve performance

pull/114/head
DevJPM 2016-01-14 12:24:36 +01:00
parent 1839fc40b3
commit 07ff7b0d61
1 changed files with 25 additions and 25 deletions
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50
integer.cpp
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@ -3044,7 +3044,7 @@ Integer::Integer(word value, size_t length)
template <class T>
static Integer StringToInteger(const T *str, ByteOrder order)
{
assert(order == LITTLE_ENDIAN_ORDER || order == BIG_ENDIAN_ORDER);
assert( order == BIG_ENDIAN_ORDER || order == LITTLE_ENDIAN_ORDER );
int radix, sign = 1;
// GCC workaround
@ -3088,7 +3088,29 @@ static Integer StringToInteger(const T *str, ByteOrder order)
str += 2, length -= 2;
}
if(radix == 16 && order == LITTLE_ENDIAN_ORDER)
if(order == BIG_ENDIAN_ORDER)
{
for (unsigned int i=0; i<length; i++)
{
int digit, ch = static_cast<int>(str[i]);
if (ch >= '0' && ch <= '9')
digit = ch - '0';
else if (ch >= 'A' && ch <= 'F')
digit = ch - 'A' + 10;
else if (ch >= 'a' && ch <= 'f')
digit = ch - 'a' + 10;
else
digit = radix;
if (digit < radix)
{
v *= radix;
v += digit;
}
}
}
else if(radix == 16 && order == LITTLE_ENDIAN_ORDER)
{
// Nibble high, low and count
unsigned int nh, nl, nc = 0;
@ -3125,7 +3147,7 @@ static Integer StringToInteger(const T *str, ByteOrder order)
if(nc == 1)
v += nh * position;
}
else if(order == LITTLE_ENDIAN_ORDER)
else // LITTLE_ENDIAN_ORDER && radix != 16
{
for (int i=static_cast<int>(length)-1; i>=0; i--)
{
@ -3147,28 +3169,6 @@ static Integer StringToInteger(const T *str, ByteOrder order)
}
}
}
else
{
for (unsigned int i=0; i<length; i++)
{
int digit, ch = static_cast<int>(str[i]);
if (ch >= '0' && ch <= '9')
digit = ch - '0';
else if (ch >= 'A' && ch <= 'F')
digit = ch - 'A' + 10;
else if (ch >= 'a' && ch <= 'f')
digit = ch - 'a' + 10;
else
digit = radix;
if (digit < radix)
{
v *= radix;
v += digit;
}
}
}
if (sign == -1)
v.Negate();