Objective-c:如何四舍五入浮点值? [英] Objective-c: How to round off Float values?
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问题描述
可能重复:
Objective-C中的舍入数字
Possible Duplicate:
Rounding numbers in Objective-C
在Objective-c中，如何舍入浮点值?
In Objective-c How to round off Float values?
推荐答案
除了其他答案:
float theFloat = 1.23456;
int rounded = roundf(theFloat); NSLog(@"%d",rounded);
int roundedUp = ceil(theFloat); NSLog(@"%d",roundedUp);
int roundedDown = floor(theFloat); NSLog(@"%d",roundedDown);
// Note: int can be replaced by float
有关四舍五入到特定的小数，请参阅Alex Kazaev提到的问题.
For rounding to specific decimals, see the question mentioned by Alex Kazaev.
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