Provided by: liblapack-doc_3.3.1-1_all bug

NAME

       DLAMCH - 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  addition,  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)

 LAPACK auxiliary routine (version 3.2)   November 2008                           DLAMCH(3lapack)