redhat man page for slamch

SLAMCH(l)								 )								 SLAMCH(l)

NAME
       SLAMCH - determine single precision machine parameters

SYNOPSIS
       REAL FUNCTION SLAMCH( CMACH )

	   CHARACTER CMACH

PURPOSE
       SLAMCH determines single precision machine parameters.

ARGUMENTS
       CMACH   (input) CHARACTER*1
	       Specifies the value to be returned by SLAMCH:
	       = 'E' or 'e',   SLAMCH := eps
	       = 'S' or 's ,   SLAMCH := sfmin
	       = 'B' or 'b',   SLAMCH := base
	       = 'P' or 'p',   SLAMCH := eps*base
	       = 'N' or 'n',   SLAMCH := t
	       = 'R' or 'r',   SLAMCH := rnd
	       = 'M' or 'm',   SLAMCH := emin
	       = 'U' or 'u',   SLAMCH := rmin
	       = 'L' or 'l',   SLAMCH := emax
	       = 'O' or 'o',   SLAMCH := 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) dig-
	     its 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 version 3.0						   15 June 2000 							 SLAMCH(l)