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Inacurate precision truncating.

Zhi Chen

Hi folk,
I have

u16 wTemp = 0;
fsingle fTemp = 17.5123;

wTemp = (u16)fTemp;
Somehow, the wTemp is 17. Technically, the wTemp should be 18, do anybody know what do I have to do for the compiler in order to generate more precise data conversion???

Thanks!

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    I've always performed my rounding explicitly. For your example I would code it thusly:

    u16 wTemp = 0;
fsingle fTemp = 17.5123;

wTemp = (u16)(fTemp + 0.5);
    Adding 0.5 will round a float to the nearest integer for any float value, not just the value in your example.

    --Dan Henry

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  • 0

    I've always performed my rounding explicitly. For your example I would code it thusly:

    u16 wTemp = 0;
fsingle fTemp = 17.5123;

wTemp = (u16)(fTemp + 0.5);
    Adding 0.5 will round a float to the nearest integer for any float value, not just the value in your example.

    --Dan Henry

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