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views:

90

answers:

1
+1  Q: 

Math.random() question

What is the precision of JavaScript's Math.random() function?

Thanks!

+2  A: 

Math.random() generates a floating point number of 16 decimal places greater than or equal to zero and less than 1.

krs1  2010-07-27 14:07:08
Javascript floating point numbers are 64-bit IEEE 754 values, so it's not *exactly* 16 decimal places.
Pointy  2010-07-27 14:16:05
How wouldn't it be exact?
volatile900  2010-07-27 14:26:48
@volatile: If your precision is not a power of 10.
Brian  2010-07-27 14:52:14
@Pointy This is true, I was imprecise in my answer. bump.
krs1  2010-07-27 15:04:53

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