From: johne AT parallax DOT co DOT uk (John Eccleston)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: sin & cos functions?
Date: Thu, 06 Mar 97 10:50:27 GMT
Organization: Parallax Solutions Ltd
Message-ID: <857645423.321128@red.parallax.co.uk>
References: <331E6B93 DOT 3B63 AT comports DOT com>
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Cache-Post-Path: red.parallax.co.uk!unknown AT parsnip DOT parallax DOT co DOT uk
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

In article <331E6B93 DOT 3B63 AT comports DOT com>, j AT comports DOT com wrote:
>Anyone got a library that defines sin (sine) and cos (cosine) functions?
>
>If so, please e-mail me the appropriate includes and source code.
>
>thanks,

Hi,

Try the standard C header math.h which defines quite a few trigonometric
and other functions.  Note that the trigonometric functions work on
radians not degrees!

e.g.:

-----> Cut Here <-----
#include <stdio.h>
#include <math.h>

float degreesToRadians(float angle)
{
   return angle * (PI / 180);
}

main()
{
   printf("Sin of 45: %f\n", sin(degreesToRadians(45))); 
}
-----> CUT HERE <-----

Hope that helps

John

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