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Fix function changeUIntScale edge cases

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Theo Arends 2021-11-30 12:38:12 +01:00
parent 20a87186fd
commit 6bd0140dd9
1 changed files with 2 additions and 8 deletions
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10
tasmota/support_float.ino
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@ -407,14 +407,8 @@ uint16_t changeUIntScale(uint16_t inum, uint16_t ifrom_min, uint16_t ifrom_max,
to_max = ito_min;
}
uint32_t numerator = (num - from_min) * (to_max - to_min);
uint32_t result;
if (numerator >= 0x80000000L) {
// don't do rounding as it would create an overflow
result = numerator / (from_max - from_min) + to_min;
} else {
result = (((numerator * 2) / (from_max - from_min)) + 1) / 2 + to_min;
}
uint32_t numerator = (num - from_min) * (to_max - to_min + 1);
uint32_t result = numerator / (from_max - from_min) + to_min;
return (uint32_t) (result > to_max ? to_max : (result < to_min ? to_min : result));
}