This function converts double values to double values in
a given precision (only correctly working for cut a
higher precision to a lower one; e.g. IEEE 754 double
precision to IEEE 754 single precision)
Usage
.changePrecision(x, size)
Arguments
x
double, a vector of double values which
should converted.
size
integer, how many bytes using for
target precision e.g. IEEE 754 single precision:
size=4, IEEE 754 double precision: size=8