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Update table.ino (#585) 

Simplify interpolation for table2D data.
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Zeiberstein 2021-07-06 00:55:27 +02:00 committed by GitHub
parent 63b2a08234
commit 823a5ea3ad
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1 changed files with 5 additions and 11 deletions
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@ -160,19 +160,13 @@ int table2D_getValue(struct table2D *fromTable, int X_in)
int16_t yMax = table2D_getRawValue(fromTable, xMax); int16_t yMax = table2D_getRawValue(fromTable, xMax);
int16_t yMin = table2D_getRawValue(fromTable, xMin); int16_t yMin = table2D_getRawValue(fromTable, xMin);
//Float version /* Float version (if m, yMax, yMin and n were float's)
/* int yVal = (m * (yMax - yMin)) / n;
int yVal = (m / n) * (abs(yMax - yMin));
*/ */
//Non-Float version //Non-Float version
int16_t yVal = ((long)(m << 6) / n) * (abs(yMax - yMin)); int16_t yVal = ( ((int32_t) m) * (yMax-yMin) ) / n;
yVal = (yVal >> 6); returnValue = yMin + yVal;
if (yMax > yMin) { yVal = yMin + yVal; }
else { yVal = yMin - yVal; }
returnValue = yVal;
} }
fromTable->lastInput = X_in; fromTable->lastInput = X_in;