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[diderot] View of /branches/vis12/bugs/resolved/bug008.diderot
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View of /branches/vis12/bugs/resolved/bug008.diderot

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Revision 2171 - (download) (annotate)
Sat Feb 23 13:45:26 2013 UTC (9 years, 2 months ago) by jhr
File size: 893 byte(s)
  Resolved bug008.
BUG: see if you can find the error in this Diderot program, based on:

uncaught exception Match [nonexhaustive match failure]
  raised at common/phase-timer.sml:76.50-76.52
  raised at common/phase-timer.sml:76.50-76.52
  raised at typechecker/typechecker.sml:950.39
  raised at typechecker/util.sml:238.20

The correct error message is

[bug008.diderot:25.21-26.68] Error: unable to resolve overloaded operator "'lerp'"
  argument type is: (real * real * real * real * real * real)

because of a misplaced right parenthesis.

int imgSize = 400;

strand LIC (real xx, real yy) {
    vec2 pos = [xx,yy];
    output real out = 0.0;

    update {
      out = |pos|;


initially [ LIC(lerp(0.0, 79.0, -0.5, real(xi), real(imgSize)-0.5,
                lerp(0.0, 79.0, -0.5, real(yi), real(imgSize)-0.5)))
            | yi in 0..(imgSize-1), xi in 0..(imgSize-1) ];

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