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Hello!
I was just implementing this small program for calculating the line-
equation, given two points.
Just in case you don't remind this equation.... y = slope * x + b.
First I calculate the slope and then b:
$slope = ($ARGV[1] - $ARGV[3]) / ($ARGV[0] - $ARGV[2]);
$b = $ARGV[1] - ($ARGV[0] * $slope);
print "\n$ARGV[1] = $slope * $ARGV[0] + $b\n";
For this input :
perl my_program 16.81 16.57 0 0
It gives me this result :
16.57 = 0.985722784057109 * 16.81 + 0
Clearly b can be 0 only if the slope is 1. I don't know the reason for
this result (I guess precission but that's the only thing I could
say), neither how to solve it.
Please what should I do to get the correct result?
Thank you
camotito
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