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lamc2(3) Library Functions Manual lamc2(3)

NAME

lamc2 - lamc2: ??

SYNOPSIS

Functions


subroutine DLAMC2 (beta, t, rnd, eps, emin, rmin, emax, rmax)
DLAMC2 subroutine SLAMC2 (beta, t, rnd, eps, emin, rmin, emax, rmax)
SLAMC2

Detailed Description

Function Documentation

subroutine DLAMC2 (integer beta, integer t, logical rnd, double precision eps, integer emin, double precision rmin, integer emax, double precision rmax)

DLAMC2 Purpose:

!> DLAMC2 determines the machine parameters specified in its argument
!> list.
!>

Author

LAPACK is a software package provided by Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..

Parameters

BETA 

!>          The base of the machine.
!>

T

!>          The number of ( BETA ) digits in the mantissa.
!>

RND

!>          Specifies whether proper rounding  ( RND = .TRUE. )  or
!>          chopping  ( RND = .FALSE. )  occurs in addition. This may not
!>          be a reliable guide to the way in which the machine performs
!>          its arithmetic.
!>

EPS

!>          The smallest positive number such that
!>             fl( 1.0 - EPS ) .LT. 1.0,
!>          where fl denotes the computed value.
!>

EMIN

!>          The minimum exponent before (gradual) underflow occurs.
!>

RMIN

!>          The smallest normalized number for the machine, given by
!>          BASE**( EMIN - 1 ), where  BASE  is the floating point value
!>          of BETA.
!>

EMAX

!>          The maximum exponent before overflow occurs.
!>

RMAX

!>          The largest positive number for the machine, given by
!>          BASE**EMAX * ( 1 - EPS ), where  BASE  is the floating point
!>          value of BETA.
!>

Further Details

!>
!>  The computation of  EPS  is based on a routine PARANOIA by
!>  W. Kahan of the University of California at Berkeley.
!>

Definition at line 418 of file dlamchf77.f.

subroutine SLAMC2 (integer beta, integer t, logical rnd, real eps, integer emin, real rmin, integer emax, real rmax)

SLAMC2 Purpose:

!> SLAMC2 determines the machine parameters specified in its argument
!> list.
!>

Author

LAPACK is a software package provided by Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..

Parameters

BETA 

!>          The base of the machine.
!>

T

!>          The number of ( BETA ) digits in the mantissa.
!>

RND

!>          Specifies whether proper rounding  ( RND = .TRUE. )  or
!>          chopping  ( RND = .FALSE. )  occurs in addition. This may not
!>          be a reliable guide to the way in which the machine performs
!>          its arithmetic.
!>

EPS

!>          The smallest positive number such that
!>             fl( 1.0 - EPS ) .LT. 1.0,
!>          where fl denotes the computed value.
!>

EMIN

!>          The minimum exponent before (gradual) underflow occurs.
!>

RMIN

!>          The smallest normalized number for the machine, given by
!>          BASE**( EMIN - 1 ), where  BASE  is the floating point value
!>          of BETA.
!>

EMAX

!>          The maximum exponent before overflow occurs.
!>

RMAX

!>          The largest positive number for the machine, given by
!>          BASE**EMAX * ( 1 - EPS ), where  BASE  is the floating point
!>          value of BETA.
!>

Further Details

!>
!>  The computation of  EPS  is based on a routine PARANOIA by
!>  W. Kahan of the University of California at Berkeley.
!>

Definition at line 418 of file slamchf77.f.

Author

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