makeDetailsMask() numDotsNeg (p26c)

Meter.c

@@ -504,6 +504,7 @@ static uint16_t GraphMeterMode_makeDetailsMask(const GraphColorComputeState* pre
    assert(rem < 1.0);
 
    unsigned int numDots = (unsigned int)(int) ceil(rem * 8.0);
+   unsigned int numDotsNeg = -numDots;
 
    uint8_t blanksAtEnd;
    bool roundsUpInAscii = false;
@@ -513,7 +514,7 @@ static uint16_t GraphMeterMode_makeDetailsMask(const GraphColorComputeState* pre
       blanksAtEnd = (uint8_t)blanksAtTopCell;
       roundsUpInAscii = true;
    } else if (prev->nCellsPainted == 0 || prev->topPoint <= (double)(int)prev->nCellsPainted) {
-      blanksAtEnd = (8 - numDots) % 8;
+      blanksAtEnd = (8 + numDotsNeg) % 8;
    } else if ((double)(int)new->nCellsPainted > new->topPoint) {
       assert(new->nCellsPainted - new->topPoint < 1.0);
       assert(rem > 0.0);
@@ -548,7 +549,7 @@ static uint16_t GraphMeterMode_makeDetailsMask(const GraphColorComputeState* pre
 
    uint8_t blanksAtStart;
    if (prev->nCellsPainted > 0) {
-      blanksAtStart = (8 - numDots - blanksAtEnd) % 8;
+      blanksAtStart = (8 + numDotsNeg - blanksAtEnd) % 8;
    } else {
       // Always zero blanks for the first cell.
       // When an item would be painted with all cells (from the first cell to