Regan 推测这个特殊数字的麻烦之处在于它是“最大的次法线双精度浮点数”。

Regan speculated that this particular number is troublesome because it is the "largest subnormal double-precision floating-point number."

youdao

传回小于或等于指定的双精度浮点数的最大整数。

Returns the largest integer less than or equal to the specified double-precision floating-point number.

youdao

方法为了避免浮点数溢出，我们由浮点的最大值作为输入参数，然后根据积分级数N计算出积分步长。

Methods To avoid floating point overflow, we calculate the input value according to the maximum of floating-point number and get corresponding integration step at a given level N.

youdao

Just write a program to find the max of x and y.

就写个程序找出浮点数x和y中的最大值吧。

麻省理工公开课 - 计算机科学及编程导论课程节选