Deron Eriksson created SYSTEMML-656:
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Summary: Read-in boolean variable math treated as doubles rather
than booleans
Key: SYSTEMML-656
URL: https://issues.apache.org/jira/browse/SYSTEMML-656
Project: SystemML
Issue Type: Bug
Reporter: Deron Eriksson
If we have two boolean variables and add them normally, the addition is treated
as boolean algebra (true + true = true).
{code}
x = TRUE;
y = TRUE;
z = x + y;
print(x);
print(y);
print(z);
{code}
produces
{code}
TRUE
TRUE
TRUE
{code}
However, if we read in boolean scalars using the read statement and add the
boolean variables, the math ends up giving a double result instead of a boolean
result:
{code}
x = read("./tmp/sc1", data_type="scalar", value_type="boolean");
y = read("./tmp/sc2", data_type="scalar", value_type="boolean");
z = x + y;
print(x);
print(y);
print(z);
{code}
produces (where ./tmp/sc1 contains "TRUE" and ./tmp/sc2 contains "TRUE"):
{code}
TRUE
TRUE
2.0
{code}
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