Deron Eriksson created SYSTEMML-1816:
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Summary: toString can return -0
Key: SYSTEMML-1816
URL: https://issues.apache.org/jira/browse/SYSTEMML-1816
Project: SystemML
Issue Type: Bug
Components: Runtime
Reporter: Deron Eriksson
When display matrix values with toString, -0 can be displayed.
Example:
{code}
m = matrix("50 99 100 200",rows=2,cols=2);
x = 100;
m = (m - x) * ((m-x) >= 0)
print(toString(m))
{code}
gives:
{code}
-0.000 -0.000
0.000 100.000
{code}
Using as.scalar on the individual cells returns 0:
{code}
for (i in 1:nrow(m)) {
for (j in 1:ncol(m)) {
n = m[i,j]
print('[' + i + ',' + j + ']:' + as.scalar(n))
}
}
{code}
gives:
{code}
[1,1]:0.0
[1,2]:0.0
[2,1]:0.0
[2,2]:100.0
{code}
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