makeDetailsMask() roundDirInAscii (p23a)

Meter.c

@@ -507,12 +507,11 @@ static uint16_t GraphMeterMode_makeDetailsMask(const GraphColorComputeState* pre
    double maxBlanks = 8.0 - numDots;
 
    uint8_t blanksAtEnd;
-   bool roundsUpInAscii = false;
-   bool roundsDownInAscii = false;
+   int roundDirInAscii = 0;
    if (blanksAtTopCell >= 0) {
       assert(blanksAtTopCell < 8);
       blanksAtEnd = (uint8_t)blanksAtTopCell;
-      roundsUpInAscii = true;
+      roundDirInAscii = 1;
    } else if (prev->nCellsPainted == 0 || prev->topPoint <= (double)(int)prev->nCellsPainted) {
       blanksAtEnd = (uint8_t)maxBlanks % 8;
    } else if ((double)(int)new->nCellsPainted > new->topPoint) {
@@ -527,8 +526,11 @@ static uint16_t GraphMeterMode_makeDetailsMask(const GraphColorComputeState* pre
       distance = distance - rem * 0.5;
 
       // Tiebreaking direction that may be needed in the ASCII display mode.
-      roundsUpInAscii = distance > 0.5;
-      roundsDownInAscii = distance < 0.5;
+      if (distance > 0.5) {
+         roundDirInAscii = 1;
+      } else if (distance < 0.5) {
+         roundDirInAscii = -1;
+      }
 
       distance *= 8.0;
       if ((uint8_t)numDots % 2 == 0) {
@@ -566,23 +568,23 @@ static uint16_t GraphMeterMode_makeDetailsMask(const GraphColorComputeState* pre
 
    if (new->nCellsPainted - prev->nCellsPainted == 1) {
       assert(blanksAtStart + blanksAtEnd < 8);
-      if (roundsUpInAscii && needsTiebreak) {
+      if (roundDirInAscii > 0 && needsTiebreak) {
          mask &= 0xF7FF;
       }
       mask >>= 8;
-   } else if (roundsUpInAscii) {
+   } else if (roundDirInAscii > 0) {
       if (blanksAtStart < 4 && (uint8_t)(blanksAtStart + blanksAtEnd % 4) >= 4) {
          mask &= 0xF7FF;
       }
    }
 
    mask &= 0xFFFF << blanksAtEnd;
 
-   if (roundsUpInAscii) {
+   if (roundDirInAscii > 0) {
       if (needsTiebreak) {
          mask |= 0x0004;
       }
-   } else if (roundsDownInAscii) {
+   } else if (roundDirInAscii < 0) {
       assert(blanksAtStart <= blanksAtEnd);
       if (needsTiebreak) {
          mask = (mask & 0xFFEF) | 0x0020;