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- RealFun: Real & Complex Math Libraries for QuickBASIC
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- DEMO.TXT
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- Included in this package are 4 demonstration programs, so
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- that you can get a feel for how the libraries are used. The
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- sources are stored in text mode so they can be accessed with
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- your favorite text processor (like 'more'). The executables
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- are stand-alone; they don't need any of the QuickBASIC
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- modules to run.
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- DEMOATAN shows how functions in REALFUN can compute the
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- inverse tangent, properly accounting for the quadrant in
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- which the angle lies. QuickBASIC's inverse tangent
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- function, ATN, would give -0.7854 radians as the inverse
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- tangent of -1, whereas REALFUN would give you -0.7854, or
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- 2.3562 radians, or -45 or 135 degrees, depending on what you
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- want.
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- DEMOTRIG runs through the gamut of the circular and
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- hyperbolic trigonometric functions, tabulating the different
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- values for different angles.
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- DEMOJUL displays a Julia set fractal on a 320 x 200 x 256
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- screen. This program is slow, but is a powerful framework
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- for "rolling-your-own" fractals. To interrupt the program,
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- hit any key. The finished product is contained in
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- DEMOJUL.GIF.
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- DEMONEWT displays another type of fractal, that resulting
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- from applying Newton's method to the equation z^4 = 1.
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- Again, this is not a quick program, but provides a framework
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- for developing your own fractals. To stop the program in
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- mid-draw, hit any key. The finished picture is NEWTON.GIF.
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