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how can I convert a decimal to an integer?

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sadel
sadel 2011-6-26
编辑： Szymon Buchaniec 2020-5-14
how can I convert a decimal to an integer?
example
1.232422->1
2123.43242322->2123

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采纳的回答

Oleg Komarov
Oleg Komarov 2011-6-26
  • fix to strip all the decimals
  • round can change the integer part
fix (1.9) % 1
round(1.9) % 2

更多回答（3 个）

Szymon Buchaniec
Szymon Buchaniec 2020-5-14
编辑：Szymon Buchaniec 2020-5-14
All the proposed answers:
  • round(x) - round to the closest integer to x
  • floor(x) - round to the nearest integer less or equal to x
  • ceil(x) - round to the nearest integer greater than or equal to x
  • fix(x) - round to the nearest integer towards 0 (floor(x) for x >=0 and ceil(x) for x<=0)
does not convert the number, but only rounds it. Type of the number is still the same. To convert a decimal (double) number to an integer, one needs to use Conversion Functions. Rounding is automatic, but can be chosen explicitly. Examples:
  • uint16(1.8) -> 2
  • int32(floor(1.8)) -> 1
Mads Svendsen-Tune
Mads Svendsen-Tune 2011-6-26
There is a function: round()
Willem Dorff
Willem Dorff 2020-2-19
floor() to round down to nearest integer
ceil() to round up to nearest integer

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