bkinnightskytw
/
ethercat
mirror of https://gitlab.com/bkinnightskytw/ethercat.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Implemented sign-and-magnitude integer types.

This commit is contained in:
Florian Pose 2010-03-29 15:45:44 +02:00
parent 7ec07fbef2
commit a79d5e0329
1 changed files with 55 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
tool/DataTypeHandler.cpp
View File

@ -75,7 +75,9 @@ string DataTypeHandler::typeInfo()
<< " int8, int16, int32, int64," << endl
<< " uint8, uint16, uint32, uint64," << endl
<< " float, double" << endl
<< " string, octet_string, unicode_string." << endl;
<< " string, octet_string, unicode_string." << endl
<< "For sign-and-magnitude coding, use the following types:" << endl
<< " sm8, sm16, sm32, sm64" << endl;
return s.str();
}
@ -232,6 +234,17 @@ size_t DataTypeHandler::interpretAsType(
throw runtime_error(err.str());
}
case 0xfffb: // sm8
case 0xfffc: // sm16
case 0xfffd: // sm32
case 0xfffe: // sm64
{
stringstream err;
err << "Sign-and-magitude types not yet"
" implemented for input direction.";
throw runtime_error(err.str());
}
default:
{
stringstream err;
@ -354,6 +367,43 @@ void DataTypeHandler::outputData(
<< " " << dec << val << endl;
}
break;
case 0xfffb: // sm8
{
int8_t val = *(uint8_t *) data;
int8_t smval = val < 0 ? (val & 0x7f) * -1 : val;
o << "0x" << hex << setw(2) << (int) val
<< " " << dec << (int) smval << endl;
}
break;
case 0xfffc: // sm16
{
int16_t val = le16_to_cpup(data);
int16_t smval = val < 0 ? (val & 0x7fff) * -1 : val;
o << "0x" << hex << setw(4) << val
<< " " << dec << smval << endl;
}
break;
case 0xfffd: // sm32
{
int32_t val = le32_to_cpup(data);
int32_t smval = val < 0 ? (val & 0x7fffffffUL) * -1 : val;
o << "0x" << hex << setw(8) << val
<< " " << dec << smval << endl;
}
break;
case 0xfffe: // sm64
{
int64_t val = le64_to_cpup(data);
int64_t smval =
val < 0 ? (val & 0x7fffffffffffffffULL) * -1 : val;
o << "0x" << hex << setw(16) << val
<< " " << dec << smval << endl;
}
break;
default:
printRawData(o, (const uint8_t *) data, dataSize); // FIXME
@ -406,6 +456,10 @@ const DataTypeHandler::DataType DataTypeHandler::dataTypes[] = {
{"uint56", 0x001a, 7},
{"uint64", 0x001b, 8},
// reserved 0x001c-0x001f
{"sm8", 0xfffb, 1}, // sign-and-magnitude coding
{"sm16", 0xfffc, 2}, // sign-and-magnitude coding
{"sm32", 0xfffd, 4}, // sign-and-magnitude coding
{"sm64", 0xfffe, 8}, // sign-and-magnitude coding
{"raw", 0xffff, 0},
{}
};