EPICS_driver_modules/StreamDevice
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This commit is contained in:
zimoch
2007-11-30 15:25:00 +00:00
parent 55c8977e7b
commit e6c0b6af0e
1 changed files with 42 additions and 6 deletions
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48
src/RawConverter.cc
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@ -54,7 +54,16 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
value >>= 8;
width--;
}
byte = (byte & 0x80) ? 0xFF : 0x00; // fill with sign
if (format.flags & zero_flag)
{
// fill with zero
byte = 0;
}
else
{
// fill with sign
byte = (byte & 0x80) ? 0xFF : 0x00;
}
while (width--)
{
output.append(byte);
@ -62,8 +71,17 @@ printLong(const StreamFormat& format, StreamBuffer& output, long value)
}
else // msb first (big endian)
{
byte = ((value >> (8 * (prec-1))) & 0x80) ? 0xFF : 0x00;
while (width > prec) // fill with sign
if (format.flags & zero_flag)
{
// fill with zero
byte = 0;
}
else
{
// fill with sign
byte = ((value >> (8 * (prec-1))) & 0x80) ? 0xFF : 0x00;
}
while (width > prec)
{
output.append(byte);
width--;
@ -98,14 +116,32 @@ scanLong(const StreamFormat& format, const char* input, long& value)
}
if (width == 0)
{
val |= ((signed char) input[length++]) << shift;
if (format.flags & zero_flag)
{
// fill with zero
val |= ((unsigned char) input[length++]) << shift;
}
else
{
// fill with sign
val |= ((signed char) input[length++]) << shift;
}
}
length += width; // ignore upper bytes not fitting in long
}
else
{
// big endian (sign extended)*/
val = (signed char) input[length++];
// big endian */
if (format.flags & zero_flag)
{
// fill with zero
val = (unsigned char) input[length++];
}
else
{
// fill with sign
val = (signed char) input[length++];
}
while (--width)
{
val <<= 8;