int2strn

convert integer to string, using either integer or exponential format

int2strn(n,k,p) converts the number n to a string, expressing n in integer format if it can be written using k digits or less, and otherwise in exponential format with precision p. The default values of k and p are 6 and 3, respectively. When numbers are written in exponential format, extraneous leading zeros in the exponent are suppressed.