Resent-Date: Thu, 4 Jan 1996 15:54:29 -0500
From: Zbigniew Wieckowski <wieckows@cs.umn.edu>
Message-Id: <199601050152.TAA11003@mega.cs.umn.edu>
Subject: Strange problem.
To: java-linux@java.blackdown.org
Date: Thu, 4 Jan 1996 19:52:41 -0600 (CST)
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1) I do import java.lang.Math
2) adding /usr/local/java/classes/java/lang/ to CLASSPATH doesn't help
3) I have tried changing gamma3 to gammaCube, but that didn't help either.

I have no idea why the following code:

    test1 = alpha*alpha*alpha+beta*beta;
    if (test1 >= 0.0) {
      gamma3Rad = beta+Math.sqrt(test1);
      gamma3Ang = 0.0;
    } else {
      gamma3Rad = Math.sqrt(beta*beta-test1);
      gamma3Ang = Math.atan2(Math.sqrt(-test1),beta);
    }
    if (gamma3Rad < 0.0) {
      gamma3Rad = -gamma3Rad;
      if (gamma3Ang > Math.PI) {
        gamma3Ang -= Math.PI;
      } else {
        gamma3Rad += Math.PI;
      }
    }
    gammaRad = Math.exp(1.0/3.0*Math.log(gamma3Rad));
    gammaAng = gamma3Ang/3;
    gammaReal = gammaRad*Math.cos(gammaAng);
    gammaImg = gammaRad*Math.sin(gammaRad);
    if (gammaRad != 0.0) {
      alphaDivGammaRad = alpha/gammaRad;
      alphaDivGammaAng = -gammaAng;
      alphaDivGammaReal = alphaDivGammaRad*Math.cos(alphaDivGammaAng);
      alphaDivGammaImg = alphaDivGammaRad*Math.sin(alphaDivGammaAng);
      deltaReal = q/3-alphaDivGammaReal+gammaReal;
      deltaImg = -alphaDivGammaImg+gammaImg; // should cancel magically


generates the following errors:

MyCanvas.java:107: Variable gamma3Rad may not have been initialized.
    if (gamma3Rad < 0.0) {
        ^
MyCanvas.java:109: Variable gamma3Ang may not have been initialized.
      if (gamma3Ang > Math.PI) {
          ^
MyCanvas.java:115: Variable gamma3Rad may not have been initialized.
    gammaRad = Math.exp(1.0/3.0*Math.log(gamma3Rad));
                                         ^
MyCanvas.java:116: Variable gamma3Ang may not have been initialized.
    gammaAng = gamma3Ang/3;
               ^
MyCanvas.java:125: Statement not reached.
      deltaImg = -alphaDivGammaImg+gammaImg; // should cancel magically


Any clues?

Thanks,

Zbigniew Wieckowski - research assistant

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Zbigniew Wieckowski, Department of Computer Science, University of Minnesota,
200 Union St. SE, MN 55455, U.S.A., (612)625-0304, e-mail:wieckows@cs.umn.edu
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         What is mind? No matter. What is matter? Never mind.
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