Functions¶

subroutine DLAMC1 (beta, t, rnd, ieee1)
DLAMC1 subroutine SLAMC1 (beta, t, rnd, ieee1)
SLAMC1

subroutine DLAMC1 (integer beta, integer t, logical rnd, logical ieee1)¶

DLAMC1 Purpose:

!> DLAMC1 determines the machine parameters given by BETA, T, RND, and
!> IEEE1.
!> 

Parameters

!>          The base of the machine.
!> 

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

!>          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.
!> 

!>          Specifies whether rounding appears to be done in the IEEE
!>          'round to nearest' style.
!> 

Author

Further Details

!>
!>  The routine is based on the routine  ENVRON  by Malcolm and
!>  incorporates suggestions by Gentleman and Marovich. See
!>
!>     Malcolm M. A. (1972) Algorithms to reveal properties of
!>        floating-point arithmetic. Comms. of the ACM, 15, 949-951.
!>
!>     Gentleman W. M. and Marovich S. B. (1974) More on algorithms
!>        that reveal properties of floating point arithmetic units.
!>        Comms. of the ACM, 17, 276-277.
!> 

Definition at line 207 of file dlamchf77.f.

subroutine SLAMC1 (integer beta, integer t, logical rnd, logical ieee1)¶

SLAMC1 Purpose:

!> SLAMC1 determines the machine parameters given by BETA, T, RND, and
!> IEEE1.
!> 

Parameters

!>          The base of the machine.
!> 

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

!>          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.
!> 

!>          Specifies whether rounding appears to be done in the IEEE
!>          'round to nearest' style.
!> 

Author

Further Details

!>
!>  The routine is based on the routine  ENVRON  by Malcolm and
!>  incorporates suggestions by Gentleman and Marovich. See
!>
!>     Malcolm M. A. (1972) Algorithms to reveal properties of
!>        floating-point arithmetic. Comms. of the ACM, 15, 949-951.
!>
!>     Gentleman W. M. and Marovich S. B. (1974) More on algorithms
!>        that reveal properties of floating point arithmetic units.
!>        Comms. of the ACM, 17, 276-277.
!> 

Definition at line 206 of file slamchf77.f.