string conversion of INDEF-valued real

Jason Quinn wrote on Jun 24, 2008

real tmpx=INDEF
print("The value is "//str(tmpx))

returns: INDEF
expect: The value is INDEF

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Mike Fitzpatrick wrote on Jun 24, 2008

The '//' is a binary operator and as a rule expressions involving an INDEF operand are not allowed, so what you're seeing is that the result of concatenating a string with an INDEF is itself an INDEF value. In v2.14 you can use the isindef() builtin to test for this, e.g.

if (isindef (foo)) {
    print ("value is INDEF")
} else {
    print ("value is " // foo)
}

Alternatively, use printf() instead:

ecl> x = INDEF
ecl> printf ("value is %s\n\n", str(x))
value is INDEF

Cheers,
-Mike

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Last post on Jun 24, 2008