root / src / lapack / double / disnan.f @ 2
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| 1 | 1 | equemene | LOGICAL FUNCTION DISNAN( DIN ) |
|---|---|---|---|
| 2 | 1 | equemene | * |
| 3 | 1 | equemene | * -- LAPACK auxiliary routine (version 3.2.2) -- |
| 4 | 1 | equemene | * -- LAPACK is a software package provided by Univ. of Tennessee, -- |
| 5 | 1 | equemene | * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
| 6 | 1 | equemene | * June 2010 |
| 7 | 1 | equemene | * |
| 8 | 1 | equemene | * .. Scalar Arguments .. |
| 9 | 1 | equemene | DOUBLE PRECISION DIN |
| 10 | 1 | equemene | * .. |
| 11 | 1 | equemene | * |
| 12 | 1 | equemene | * Purpose |
| 13 | 1 | equemene | * ======= |
| 14 | 1 | equemene | * |
| 15 | 1 | equemene | * DISNAN returns .TRUE. if its argument is NaN, and .FALSE. |
| 16 | 1 | equemene | * otherwise. To be replaced by the Fortran 2003 intrinsic in the |
| 17 | 1 | equemene | * future. |
| 18 | 1 | equemene | * |
| 19 | 1 | equemene | * Arguments |
| 20 | 1 | equemene | * ========= |
| 21 | 1 | equemene | * |
| 22 | 1 | equemene | * DIN (input) DOUBLE PRECISION |
| 23 | 1 | equemene | * Input to test for NaN. |
| 24 | 1 | equemene | * |
| 25 | 1 | equemene | * ===================================================================== |
| 26 | 1 | equemene | * |
| 27 | 1 | equemene | * .. External Functions .. |
| 28 | 1 | equemene | LOGICAL DLAISNAN |
| 29 | 1 | equemene | EXTERNAL DLAISNAN |
| 30 | 1 | equemene | * .. |
| 31 | 1 | equemene | * .. Executable Statements .. |
| 32 | 1 | equemene | DISNAN = DLAISNAN(DIN,DIN) |
| 33 | 1 | equemene | RETURN |
| 34 | 1 | equemene | END |