Developer Reference for Intel® oneAPI Math Kernel Library for Fortran
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?lamc2
Used by ?lamch. Determines machine parameters specified in its arguments list.
Syntax
call slamc2( beta, t, rnd, eps, emin, rmin, emax, rmax )
call dlamc2( beta, t, rnd, eps, emin, rmin, emax, rmax )
Include Files
- mkl.fi
Description
The routine ?lamc2 determines machine parameters specified in its arguments list.
Output Parameters
- beta
-
INTEGER. The base of the machine.
- t
-
INTEGER. The number of (beta) digits in the mantissa.
- rnd
-
LOGICAL.
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
-
REAL for slamc2
DOUBLE PRECISION for dlamc2
The smallest positive number such that
fl(1.0 - eps) < 1.0,
where fl denotes the computed value.
- emin
-
INTEGER. The minimum exponent before (gradual) underflow occurs.
- rmin
-
REAL for slamc2
DOUBLE PRECISION for dlamc2
The smallest normalized number for the machine, given by
baseemin-1,
where base is the floating point value of beta.
- emax
-
INTEGER.The maximum exponent before overflow occurs.
- rmax
-
REAL for slamc2
DOUBLE PRECISION for dlamc2
The largest positive number for the machine, given by baseemax(1 - eps), where base is the floating point value of beta.