dlamch man page on OpenIndiana

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dlamch(3P)		    Sun Performance Library		    dlamch(3P)

NAME
       dlamch - Determines double precision machine parameters.

SYNOPSIS
       DOUBLE PRECISION FUNCTION DLAMCH(CMACH)

       CHARACTER * 1 CMACH

       DOUBLE PRECISION FUNCTION DLAMCH_64(CMACH)

       CHARACTER * 1 CMACH

   F95 INTERFACE
       REAL(8) FUNCTION DLAMCH(CMACH)

       CHARACTER, INTENT(IN) :: CMACH

   C INTERFACE
       #include <sunperf.h>

       double dlamch(const char);

       double dlamch_64(const char);

PURPOSE
       dlamch returns double precision machine paramters.

ARGUMENTS
       CMACH (input)
		 On entry, CMACH specifies the value to be returned.
		 CMACH = 'E' or 'e', eps, relative machine precision
		 CMACH	= 'S' or 's , safe minimum, such that 1/sfmin does not
		 overflow
		 CMACH = 'B' or 'b', base of the machine
		 CMACH = 'P' or 'p', eps * base
		 CMACH = 'N' or 'n', number of (base) digits in the mantissa
		 CMACH = 'R' or 'r', 1.0 when rounding occurs in addition, 0.0
		 otherwise
		 CMACH	=  'M' or 'm', emin, minimum exponent before (gradual)
		 underflow
		 CMACH = 'U' or 'u', underflow threshold - base**(emin-1)
		 CMACH = 'L' or 'l', emax, largest exponent before overflow
		 CMACH	 =    'O'    or	   'o',	   overflow    threshold     -
		 (base**emax)*(1-eps)
		 Unchanged on exit.

				  6 Mar 2009			    dlamch(3P)
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