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-
- InvTrig
-
- InvTrig was written for use in Turbo Pascal 6.0, but should
- work in 5.0, 5.5, and perhaps in earlier versions.
-
- InvTrig was first conceived when a friend had asked me if I
- had any units or procedures for giving the inverse of the sine,
- cosine, and tangent functions. I searched around for some, but
- I came up empty handed. I was surprised to find every
- imaginable trig and calculus function in shareware and in the
- public domain, except these three. So, two days later, InvTrig
- was born.
-
- InvTrig is three functions rolled into one unit.
-
- InvSin(X) : Returns the Inverse Sine of X.
- InvCos(X) : Returns the Inverse Cosine of X.
- InvTan(X) : Returns the Inverse Tangent of X.
-
- All values returned are of the Real number type. Input
- values for InvSin and InvCos must be between -1 and 1. There
- isn't any error checking built into the functions, so care must
- be taken. A value outside of that range will result in an error
- or may give unpredictable results.
-
- TrigTest is a small program to show InvTrig functions in
- action. The results were truncated when written to the screen,
- or else they would have been expressed in scientific notation.
-
- InvTrig is being released "AS IS" into the public domain.
- RAM Software Development will not assume any responsibility for
- damages and loss of profit, and will not provide any expressed
- or implied warranties. Use this software at your own risk.
-
- InvTrig may be distributed freely, provided that all files
- (INVTRIG.DOC, INVTRIG.PAS, INVTRIG.TPU, TRIGTEST.PAS,
- TRIGTEST.EXE) are distributed together, and that no other files
- are appended to the distribution archive or disk.
-
- Turbo Pascal is a registered trademark of Borland International
-
-
- InvTrig Copyright (c) 1992, RAM Software Development