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! { dg-do run }
! { dg-options "-fno-range-check" }
! { dg-add-options ieee }
!
! PR fortran/34192
!
! Test compile-time implementation of NEAREST
!
program test
implicit none
! Single precision
! 0+ > 0
if (nearest(0.0, 1.0) &
<= 0.0) &
STOP 1
! 0++ > 0+
if (nearest(nearest(0.0, 1.0), 1.0) &
<= nearest(0.0, 1.0)) &
STOP 2
! 0+++ > 0++
if (nearest(nearest(nearest(0.0, 1.0), 1.0), 1.0) &
<= nearest(nearest(0.0, 1.0), 1.0)) &
STOP 3
! 0+- = 0
if (nearest(nearest(0.0, 1.0), -1.0) &
/= 0.0) &
STOP 4
! 0++- = 0+
if (nearest(nearest(nearest(0.0, 1.0), 1.0), -1.0) &
/= nearest(0.0, 1.0)) &
STOP 5
! 0++-- = 0
if (nearest(nearest(nearest(nearest(0.0, 1.0), 1.0), -1.0), -1.0) &
/= 0.0) &
STOP 6
! 0- < 0
if (nearest(0.0, -1.0) &
>= 0.0) &
STOP 7
! 0-- < 0+
if (nearest(nearest(0.0, -1.0), -1.0) &
>= nearest(0.0, -1.0)) &
STOP 8
! 0--- < 0--
if (nearest(nearest(nearest(0.0, -1.0), -1.0), -1.0) &
>= nearest(nearest(0.0, -1.0), -1.0)) &
STOP 9
! 0-+ = 0
if (nearest(nearest(0.0, -1.0), 1.0) &
/= 0.0) &
STOP 10
! 0--+ = 0-
if (nearest(nearest(nearest(0.0, -1.0), -1.0), 1.0) &
/= nearest(0.0, -1.0)) &
STOP 11
! 0--++ = 0
if (nearest(nearest(nearest(nearest(0.0, -1.0), -1.0), 1.0), 1.0) &
/= 0.0) &
STOP 12
! 42++ > 42+
if (nearest(nearest(42.0, 1.0), 1.0) &
<= nearest(42.0, 1.0)) &
STOP 13
! 42-- < 42-
if (nearest(nearest(42.0, -1.0), -1.0) &
>= nearest(42.0, -1.0)) &
STOP 14
! 42-+ = 42
if (nearest(nearest(42.0, -1.0), 1.0) &
/= 42.0) &
STOP 15
! 42+- = 42
if (nearest(nearest(42.0, 1.0), -1.0) &
/= 42.0) &
STOP 16
! INF+ = INF
if (nearest(1.0/0.0, 1.0) /= 1.0/0.0) STOP 17
! -INF- = -INF
if (nearest(-1.0/0.0, -1.0) /= -1.0/0.0) STOP 18
! NAN- = NAN
if (.not.isnan(nearest(0.0d0/0.0, 1.0))) STOP 19
! NAN+ = NAN
if (.not.isnan(nearest(0.0d0/0.0, -1.0))) STOP 20
! Double precision
! 0+ > 0
if (nearest(0.0d0, 1.0) &
<= 0.0d0) &
STOP 21
! 0++ > 0+
if (nearest(nearest(0.0d0, 1.0), 1.0) &
<= nearest(0.0d0, 1.0)) &
STOP 22
! 0+++ > 0++
if (nearest(nearest(nearest(0.0d0, 1.0), 1.0), 1.0) &
<= nearest(nearest(0.0d0, 1.0), 1.0)) &
STOP 23
! 0+- = 0
if (nearest(nearest(0.0d0, 1.0), -1.0) &
/= 0.0d0) &
STOP 24
! 0++- = 0+
if (nearest(nearest(nearest(0.0d0, 1.0), 1.0), -1.0) &
/= nearest(0.0d0, 1.0)) &
STOP 25
! 0++-- = 0
if (nearest(nearest(nearest(nearest(0.0d0, 1.0), 1.0), -1.0), -1.0) &
/= 0.0d0) &
STOP 26
! 0- < 0
if (nearest(0.0d0, -1.0) &
>= 0.0d0) &
STOP 27
! 0-- < 0+
if (nearest(nearest(0.0d0, -1.0), -1.0) &
>= nearest(0.0d0, -1.0)) &
STOP 28
! 0--- < 0--
if (nearest(nearest(nearest(0.0d0, -1.0), -1.0), -1.0) &
>= nearest(nearest(0.0d0, -1.0), -1.0)) &
STOP 29
! 0-+ = 0
if (nearest(nearest(0.0d0, -1.0), 1.0) &
/= 0.0d0) &
STOP 30
! 0--+ = 0-
if (nearest(nearest(nearest(0.0d0, -1.0), -1.0), 1.0) &
/= nearest(0.0d0, -1.0)) &
STOP 31
! 0--++ = 0
if (nearest(nearest(nearest(nearest(0.0d0, -1.0), -1.0), 1.0), 1.0) &
/= 0.0d0) &
STOP 32
! 42++ > 42+
if (nearest(nearest(42.0d0, 1.0), 1.0) &
<= nearest(42.0d0, 1.0)) &
STOP 33
! 42-- < 42-
if (nearest(nearest(42.0d0, -1.0), -1.0) &
>= nearest(42.0d0, -1.0)) &
STOP 34
! 42-+ = 42
if (nearest(nearest(42.0d0, -1.0), 1.0) &
/= 42.0d0) &
STOP 35
! 42+- = 42
if (nearest(nearest(42.0d0, 1.0), -1.0) &
/= 42.0d0) &
STOP 36
! INF+ = INF
if (nearest(1.0d0/0.0d0, 1.0) /= 1.0d0/0.0d0) STOP 37
! -INF- = -INF
if (nearest(-1.0d0/0.0d0, -1.0) /= -1.0d0/0.0d0) STOP 38
! NAN- = NAN
if (.not.isnan(nearest(0.0d0/0.0, 1.0))) STOP 39
! NAN+ = NAN
if (.not.isnan(nearest(0.0d0/0.0, -1.0))) STOP 40
end program test
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