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Use integer formatting where possible when interpreting signal.

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Numbers are formatted as floating point numbers, which looks
a bit crap for things like e.g. serial numbers (we don't need
mantissa and exponent). This change checks the scaling factor,
and if it is integer representable, the resulting number is
formatted as an integer number as that's most likely what's
intended, particularly if the factor is 1.
This commit is contained in:
Sam Nobs
2020-09-18 15:39:08 +12:00
parent ec650dd275
commit b556016bba
2 changed files with 8 additions and 5 deletions
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dbc/dbc_classes.cpp
+7 -4
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@@ -40,6 +40,7 @@ bool DBC_SIGNAL::processAsText(const CANFrame &frame, QString &outString, bool o
{
int64_t result = 0;
bool isSigned = false;
bool isInteger = false;
double endResult;
if (valType == STRING)
@@ -70,7 +71,9 @@ bool DBC_SIGNAL::processAsText(const CANFrame &frame, QString &outString, bool o
{
result = Utility::processIntegerSignal(frame.data, startBit, signalSize, intelByteOrder, isSigned);
endResult = ((double)result * factor) + bias;
result = (int64_t)endResult;
result = (int64_t)endResult;
// if factor is an integer, we don't need the possibly human-unreadable float representation
isInteger = (factor == ceilf(factor));
}
else if (valType == SP_FLOAT)
{
@@ -95,12 +98,12 @@ bool DBC_SIGNAL::processAsText(const CANFrame &frame, QString &outString, bool o
endResult = (*((double *)(&result)) * factor) + bias;
}
outString = makePrettyOutput(endResult, result, outputName);
outString = makePrettyOutput(endResult, result, outputName, isInteger);
cachedValue = endResult;
return true;
}
QString DBC_SIGNAL::makePrettyOutput(double floatVal, int64_t intVal, bool outputName)
QString DBC_SIGNAL::makePrettyOutput(double floatVal, int64_t intVal, bool outputName, bool isInteger)
{
QString outputString;
@@ -122,7 +125,7 @@ QString DBC_SIGNAL::makePrettyOutput(double floatVal, int64_t intVal, bool outpu
}
else //otherwise display the actual number and unit (if it exists)
{
outputString += QString::number(floatVal) + unitName;
outputString += (isInteger ? QString::number(intVal) : QString::number(floatVal)) + unitName;
}
return outputString;
}