Just came across the following, and please don't come back with pedantic
remarks about undeclared variables, the code is just to show what's there:
dcl sum fixed (7) init (-0.1);
for i = 1 to whatever;
if a(i) >= 0 then
sum = sum + a(i);
end;
if substr(unspec(sum), 25, 8) ^= '0d'bx then
put data(sum);
In other words if all a(i) are negative, nothing is printed. A comment in
the code suggests that this is faster code, on modern OoO z/OS systems,
than the more logical:
dcl sum fixed (7) init (-1);
for i = 1 to whatever;
if a(i) >= 0 then
if sum ^= -1 then
sum = sum + a(i);
else
sum = a(i);
end;
It probably is if the value of whatever is in the order of 42 gazillion,
but any other thoughts about this?
Robert
--
Robert AH Prins
[email protected]
Some programming @ <https://prino.neocities.org/zOS/zOS%20Tools.html>
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