====================================================================
dlamch examples
====================================================================

====================================================================
Man Page Details
====================================================================

NAME
       DLAMCH - determine double precision machine parameters

SYNOPSIS
       DOUBLE PRECISION FUNCTION DLAMCH( CMACH )

           CHARACTER    CMACH

PURPOSE
       DLAMCH determines double precision machine parameters.

ARGUMENTS
       CMACH   (input) CHARACTER*1
               Specifies the value to be returned by DLAMCH:
               = 'E' or 'e',   DLAMCH := eps
               = 'S' or 's ,   DLAMCH := sfmin
               = 'B' or 'b',   DLAMCH := base
               = 'P' or 'p',   DLAMCH := eps*base
               = 'N' or 'n',   DLAMCH := t
               = 'R' or 'r',   DLAMCH := rnd
               = 'M' or 'm',   DLAMCH := emin
               = 'U' or 'u',   DLAMCH := rmin
               = 'L' or 'l',   DLAMCH := emax
               = 'O' or 'o',   DLAMCH := rmax

               where

       eps   = relative machine precision
             sfmin = safe minimum, such that 1/sfmin does not overflow base  =
             base of the machine prec  = eps*base t      =  number  of  (base)
             digits  in the mantissa rnd   = 1.0 when rounding occurs in addi-
             tion, 0.0 otherwise emin  =  minimum  exponent  before  (gradual)
             underflow  rmin   =  underflow threshold - base**(emin-1) emax  =
             largest exponent before overflow rmax  =  overflow  threshold   -
             (base**emax)*(1-eps)

