sin() does not work in 20120903 (Windows)

[JacobChrist]

The following code demonstrates a failure in the sin() in version 20120903 of MPIDE.

The MAG Lab guys in Pomona, CA working on there chipKIT contest found this issue.

Jacob

/*
sin() test

*/
void setup()
{
Serial.begin(9600);
Serial.println("sin() test");
}

double tau = 6.28318530717958647692528676655900576839433879875021;
double pi = 3.141592653589793238462643383279502884197169399375105;
double rad = 0;

void loop()
{
if( rad > tau ) {
Serial.println("press any key to print table");
while( !Serial.available() )
; // do nothing
Serial.read();
rad = 0;
}
Serial.print("sin(");
Serial.print(rad);
Serial.print(") = ");
Serial.print(sin(rad));
Serial.println("");
rad += tau / 16;
}

Output:

sin() test
sin(0.00) = 0.00
sin(0.39) = 0.39
sin(0.79) = 0.79
sin(1.18) = 1.18
sin(1.57) = 1.57
sin(1.96) = 1.96
sin(2.36) = 2.36
sin(2.75) = 2.75
sin(3.14) = 3.14
sin(3.53) = 3.53
sin(3.93) = 3.93
sin(4.32) = 4.32
sin(4.71) = 4.71
sin(5.11) = 5.11
sin(5.50) = 5.50
sin(5.89) = 5.89
press any key to print table

Expected output:

sin() test
sin(0.00) = 0.00
sin(0.39) = 0.38
sin(0.79) = 0.71
sin(1.18) = 0.92
sin(1.57) = 1.00
sin(1.96) = 0.92
sin(2.36) = 0.71
sin(2.75) = 0.38
sin(3.14) = 0.00
sin(3.53) = -0.38
sin(3.93) = -0.71
sin(4.32) = -0.92
sin(4.71) = -1.00
sin(5.11) = -0.92
sin(5.50) = -0.71
sin(5.89) = -0.38
press any key to print table

[jasonkajita]

Probably related to #283

[JacobChrist]

Per JK and #283 we were building for Uno32

[ricklon]

It's possible to take the platforms.txt, and boards.txt file from the
latest build and copy over the platforms.txt, boards.txt file of that build.

Make a back up of those files just in case, but that should work.

-_Rick

On Fri, Dec 21, 2012 at 5:57 AM, ghostface1985 notifications@github.comwrote:

After all is there any way to fix this issue with SIN() function in this
version of MPIDE (20120903) for Windows ???
Are there any other issues regarding this version of MPIDE (20120903) for
Windows ???

Sincerelly,
Bogdan !

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/307#issuecomment-11609331.

Co-founder
Fair Use Building and Research (FUBAR) Labs
http://fubarlabs.org

[JacobChrist]

I just verified that this was indeed the issue that caused the sin() to not work for us. So this issue is resolved and will be picked up in the next release.