org.netlib.lapack
Class Slamch

java.lang.Object
  extended by org.netlib.lapack.Slamch

public class Slamch
extends java.lang.Object

Following is the description from the original
Fortran source.  For each array argument, the Java
version will include an integer offset parameter, so
the arguments may not match the description exactly.
Contact seymour@cs.utk.edu with any questions.

* .. * * 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) 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) * * ===================================================================== * * .. Parameters ..


Field Summary
static float base
           
static float emax
           
static float emin
           
static floatW eps
           
static boolean first
           
static float prec
           
static floatW rmax
           
static floatW rmin
           
static float rnd
           
static float sfmin
           
static float t
           
 
Constructor Summary
Slamch()
           
 
Method Summary
static float slamch(java.lang.String cmach)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

base

public static float base

emax

public static float emax

emin

public static float emin

eps

public static floatW eps

prec

public static float prec

rmax

public static floatW rmax

rmin

public static floatW rmin

rnd

public static float rnd

sfmin

public static float sfmin

t

public static float t

first

public static boolean first
Constructor Detail

Slamch

public Slamch()
Method Detail

slamch

public static float slamch(java.lang.String cmach)