noisymime
/
speeduino
mirror of https://github.com/noisymime/speeduino.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Update table.ino (#585) 

Simplify interpolation for table2D data.
This commit is contained in:
Zeiberstein 2021-07-06 00:55:27 +02:00 committed by GitHub
parent 63b2a08234
commit 823a5ea3ad
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
speeduino/table.ino
View File

@ -160,19 +160,13 @@ int table2D_getValue(struct table2D *fromTable, int X_in)
int16_t yMax = table2D_getRawValue(fromTable, xMax);
int16_t yMin = table2D_getRawValue(fromTable, xMin);
//Float version
/*
int yVal = (m / n) * (abs(yMax - yMin));
/* Float version (if m, yMax, yMin and n were float's)
int yVal = (m * (yMax - yMin)) / n;
*/
//Non-Float version
int16_t yVal = ((long)(m << 6) / n) * (abs(yMax - yMin));
yVal = (yVal >> 6);
if (yMax > yMin) { yVal = yMin + yVal; }
else { yVal = yMin - yVal; }
returnValue = yVal;
int16_t yVal = ( ((int32_t) m) * (yMax-yMin) ) / n;
returnValue = yMin + yVal;
}
fromTable->lastInput = X_in;