document.write('
');
document.write('function diminishing_returns(val, scale) {
');
document.write(' if(val < 0)
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document.write(' return -diminishing_returns(-val, scale);
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document.write(' var mult = val / scale;
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document.write(' var trinum = (Math.sqrt(8.0 * mult + 1.0) - 1.0) / 2.0;
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document.write(' return trinum * scale;
');
document.write('}
');
document.write('
');
document.write('
');