DUMACH Class |
***PURPOSE Compute the unit roundoff of the machine.
***CATEGORY R1
***TYPE DOUBLE PRECISION (RUMACH-S, DUMACH-D)
***KEYWORDS MACHINE CONSTANTS
***AUTHOR Hindmarsh, Alan C., (LLNL)
***DESCRIPTION
*Usage:
DOUBLE PRECISION A, DUMACH
A = DUMACH()
*Function Return Values:
A : the unit roundoff of the machine.
*Description:
The unit roundoff is defined as the smallest positive machine
number u such that 1.0 + u .ne. 1.0. This is computed by DUMACH
in a machine-independent manner.
***REFERENCES (NONE)
***ROUTINES CALLED DUMSUM
***REVISION HISTORY (YYYYMMDD)
19930216 DATE WRITTEN
19930818 Added SLATEC-format prologue. (FNF)
20030707 Added DUMSUM to force normal storage of COMP. (ACH)
***END PROLOGUE DUMACH
***FIRST EXECUTABLE STATEMENT DUMACH
Inheritance HierarchyNamespace: DotNumerics.ODE.DVode
Assembly: DWSIM.MathOps.DotNumerics (in DWSIM.MathOps.DotNumerics.dll) Version: 1.0.0.0 (1.0.0.0)
SyntaxThe DUMACH type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | DUMACH | |
| DUMACH(DUMSUM) |
Methods| Name | Description | |
|---|---|---|
| Run | ***PURPOSE Compute the unit roundoff of the machine. ***CATEGORY R1 ***TYPE DOUBLE PRECISION (RUMACH-S, DUMACH-D) ***KEYWORDS MACHINE CONSTANTS ***AUTHOR Hindmarsh, Alan C., (LLNL) ***DESCRIPTION *Usage: DOUBLE PRECISION A, DUMACH A = DUMACH() *Function Return Values: A : the unit roundoff of the machine. *Description: The unit roundoff is defined as the smallest positive machine number u such that 1.0 + u .ne. 1.0. This is computed by DUMACH in a machine-independent manner. ***REFERENCES (NONE) ***ROUTINES CALLED DUMSUM ***REVISION HISTORY (YYYYMMDD) 19930216 DATE WRITTEN 19930818 Added SLATEC-format prologue. (FNF) 20030707 Added DUMSUM to force normal storage of COMP. (ACH) ***END PROLOGUE DUMACH ***FIRST EXECUTABLE STATEMENT DUMACH |
Fields
Extension Methods| Name | Description | |
|---|---|---|
 | GetEnumNames | (Defined by General) |
| IsValidDouble | (Defined by General) |
See Also