我可以比较，并添加一个浮点数在C整数？ [英] Can I compare and add a floating-point number to an integer in C?

问题描述

我可以比较浮点数为整数？

Can I compare a floating-point number to an integer?

请问浮动比较整数code？

Will the float compare to integers in code?

float f;     // f has a saved predetermined floating-point value to it  
if (f >=100){__asm__reset...etc}

另外，可能我...

Also, could I...

float f;
int x = 100;
x+=f;

我必须使用浮点值的˚F从姿态参考系统调整位置值获得的 X 控制的PWM信号来纠正的态度。

I have to use the floating point value f received from an attitude reference system to adjust a position value x that controls a PWM signal to correct for attitude.

推荐答案

第一个将正常工作。 100将被转换为float，并且IEE754都可以准确的整数重新present作为花车，高达约2 ²³ 。

The first one will work fine. 100 will be converted to a float, and IEE754 can represent all integers exactly as floats, up to about 2²³.

第二个也将工作，但将被转换成整数第一，所以你会失去precision（如果你彩车转成整数是不可避免的）。

The second one will also work but will be converted into an integer first, so you'll lose precision (that's unavoidable if you're turning floats into integers).

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