randnumgen's Introduction

RandNumGen

Random Number Generator for some specific statistic distributions, including uniform, normal, etc.

License

Author

Compile

Although the statically compiled binary executable file rngen is available on Linux platform, you can compile the source file rngen.F90 on your system as follow:

$ gfortran rngen.F90 -o rngen

$ ifort rngen.F90 -DIFORT -o rngen

Examples

Help info. can be obtained by ./rngen -h:

Usage: rngen [-v IsVerbose] [-s IsSilent] [ -uni unia,unib | -nor norMu,norSigma ] [-m MulprScale] [-i IncrmValue] [-p DecimalNum] [-d Len2Dim]
  [IsVerbose     ]: print verbose warning and help information (T) or not (F).
  [IsSilent      ]: print configure parameter (F) or not (T).
  [unia,unib     ]: uniform distribution on the interval [unia, unib].
  [norMu,norSigma]: normal distribution with mean norMu and variance norSigma.
  [MulprScale    ]: original random number multiplied by MulprScale to scale.
  [IncrmValue    ]: intermediary random number added by IncrmValue to shift.
  [DecimalNum    ]: number of the decimal places to be reserved.
  [Len2Dim       ]: dimension lengths of 2-D output array: dim1_len,dim2_len

As shown above, to generate a $5\times 3$ array of uniform-distributed random number on the interval $[10, 20]$ and reserve two decimal places, we can run: