| ! Test for the ISNAN intrinsic | |
| ! | |
| ! { dg-do run } | |
| ! { dg-add-options ieee } | |
| ! | |
| implicit none | |
| real :: x | |
| x = -1.0 | |
| x = sqrt(x) | |
| if (.not. isnan(x)) STOP 1 | |
| x = 0.0 | |
| x = x / x | |
| if (.not. isnan(x)) STOP 2 | |
| x = 5.0 | |
| if (isnan(x)) STOP 3 | |
| x = huge(x) | |
| x = 2*x | |
| if (isnan(x)) STOP 4 | |
| end |