On 12 Jul '08, at 9:43 PM, Patrick Walker wrote:
Everthing appears to be fine when going from 0 to 45 degrees but at 90 degrees, the tangent returns -22877334.
That's not what I get. I just compiled and ran:
printf("tan(90) = %g\n", tan(M_PI/2));
which printed:
tan(90) = 1.63312e+16
Which is not infinity, but close enough, given that π/2 can't be
represented precisely in floating-point arithmetic.
I think you need to show us the code you're using, as there seems to be something wrong with it.
—Jens
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