问题
is there a way to do the multiplication with a float in a serie sof two multiplications with integers. I would need to write a function which accepts as input values such as
3.4556546e-8
1.3
0.134435
Instead of doing 100*0.134435 it would do 100/1000000 and then multiply with
134435
the function should as output just give 1000000 and 134435 - it is just needed because i need to work with some very large numbers in big integers and mutipliying with anythign except for intgers doent work
回答1:
Apparently you want to do arbitrary precision arithmetics. You don't need to reinvent the wheel.
library(gmp)
x <- as.bigq(0.134435)
100 * x
#Big Rational ('bigq') :
# [1] 121088283181110525/9007199254740992
来源：https://stackoverflow.com/questions/30923341/multiplication-r-without-float