It is best to reserve the use of floating point arithmetic for calculations that involve fundamentally inexact values, such as measurements.
最好将浮点运算保留用作计算本来就不精确的数值，譬如测量。
2
SIGFPE - Arithmetic exception, integer divided by 0, or floating-point exception.
SIGFPE—算术异常、整数被零除或浮点异常。
3
For reasons that concern the implementation of floating point arithmetic, we decided to train our net with these twenty counts divided by a normalizing factor.