"Matt Verona" <mattverona@houston.rr.com> wrote in message news:004c01c46c5f$76ee7b10$6601a8c0@adminmd41gg0jc...
I was reading the Boost documentation, and couldn't find a function to round floating point numbers (up or down) to the nearest integer.
I have my own implementation of this algorithm as follows:
#include <math.h>
double round(double number) { return number < 0.0 ? ceil(number-0.5) : floor(number+0.5); }
This round function produces the following output:
round(0.0) = 0 round(1.49) = 1 round(1.5) = 2 round(-1.49) = -1 round(-1.5) = -2
Does Boost contain a simple rounding function like this?
Thanks in advance,
Check out Fernando Cacciola's numeric conversion library in CVS. (See libs/numeric/conversion/doc) It contains the definition of a function object type converter parameterized by a source and target type and several traits and policy classes, including one called Float2IntRounder. There are four built in float to int rounding policies: Trunc (default), RoundEven, Ceil and Floor. Jonathan