| ! { dg-do run } |
| ! Testcase for SIGN() with integer arguments |
| ! Check that: |
| ! + SIGN() evaluates its arguments only once |
| ! + SIGN() works on large values |
| ! + SIGN() works with parameter arguments |
| ! Contributed by FX Coudert <fxcoudert@gmail.com> |
| program sign1 |
| implicit none |
| integer(kind=1), parameter :: one1 = 1_1, mone1 = -1_1 |
| integer(kind=2), parameter :: one2 = 1_2, mone2 = -1_2 |
| integer(kind=4), parameter :: one4 = 1_4, mone4 = -1_4 |
| integer(kind=8), parameter :: one8 = 1_8, mone8 = -1_8 |
| integer(kind=1) :: i1, j1 |
| integer(kind=2) :: i2, j2 |
| integer(kind=4) :: i4, j4 |
| integer(kind=8) :: i8, j8 |
| integer :: i = 1 |
| |
| i1 = huge(0_1) ; j1 = -huge(0_1) |
| if (sign(i1, j1) /= j1) call abort() |
| if (sign(j1, i1) /= i1) call abort() |
| if (sign(i1,one1) /= i1 .or. sign(j1,one1) /= i1) call abort() |
| if (sign(i1,mone1) /= j1 .or. sign(j1,mone1) /= j1) call abort() |
| |
| i2 = huge(0_2) ; j2 = -huge(0_2) |
| if (sign(i2, j2) /= j2) call abort() |
| if (sign(j2, i2) /= i2) call abort() |
| if (sign(i2,one2) /= i2 .or. sign(j2,one2) /= i2) call abort() |
| if (sign(i2,mone2) /= j2 .or. sign(j2,mone2) /= j2) call abort() |
| |
| i4 = huge(0_4) ; j4 = -huge(0_4) |
| if (sign(i4, j4) /= j4) call abort() |
| if (sign(j4, i4) /= i4) call abort() |
| if (sign(i4,one4) /= i4 .or. sign(j4,one4) /= i4) call abort() |
| if (sign(i4,mone4) /= j4 .or. sign(j4,mone4) /= j4) call abort() |
| |
| i8 = huge(0_8) ; j8 = -huge(0_8) |
| if (sign(i8, j8) /= j8) call abort() |
| if (sign(j8, i8) /= i8) call abort() |
| if (sign(i8,one8) /= i8 .or. sign(j8,one8) /= i8) call abort() |
| if (sign(i8,mone8) /= j8 .or. sign(j8,mone8) /= j8) call abort() |
| |
| if (sign(foo(i), 1) /= 1) call abort |
| if (sign(foo(i), -1) /= -2) call abort |
| if (sign(42, foo(i)) /= 42) call abort |
| if (sign(42, -foo(i)) /= -42) call abort |
| if (i /= 5) call abort |
| |
| if (sign(bar(), 1) /= 1) call abort |
| if (sign(bar(), -1) /= -2) call abort |
| if (sign(17, bar()) /= 17) call abort |
| if (sign(17, -bar()) /= -17) call abort |
| if (bar() /= 5) call abort |
| |
| contains |
| |
| integer function foo(i) |
| integer :: i |
| foo = i |
| i = i + 1 |
| end function |
| |
| integer function bar() |
| integer, save :: i = 0 |
| i = i + 1 |
| bar = i |
| end function |
| end |
