[jira] [Created] (SYSTEMML-656) Read-in boolean variable math treated as doubles rather than booleans

["Deron Eriksson (JIRA)" <ji...@apache.org>]

Deron Eriksson created SYSTEMML-656:
---------------------------------------

             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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