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rt_gccstream/gcc/testsuite/gfortran.dg/nearest_3.f90

340 lines
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Fortran
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! { dg-do run }
! { dg-add-options ieee }
! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
!
! PR fortran/34209
!
! Test run-time implementation of NEAREST
!
program test
implicit none
real(4), volatile :: r4
real(8), volatile :: r8
! Single precision with single-precision sign
r4 = 0.0_4
! 0+ > 0
if (nearest(r4, 1.0) &
<= r4) &
call abort()
! 0++ > 0+
if (nearest(nearest(r4, 1.0), 1.0) &
<= nearest(r4, 1.0)) &
call abort()
! 0+++ > 0++
if (nearest(nearest(nearest(r4, 1.0), 1.0), 1.0) &
<= nearest(nearest(r4, 1.0), 1.0)) &
call abort()
! 0+- = 0
if (nearest(nearest(r4, 1.0), -1.0) &
/= r4) &
call abort()
! 0++- = 0+
if (nearest(nearest(nearest(r4, 1.0), 1.0), -1.0) &
/= nearest(r4, 1.0)) &
call abort()
! 0++-- = 0
if (nearest(nearest(nearest(nearest(r4, 1.0), 1.0), -1.0), -1.0) &
/= r4) &
call abort()
! 0- < 0
if (nearest(r4, -1.0) &
>= r4) &
call abort()
! 0-- < 0+
if (nearest(nearest(r4, -1.0), -1.0) &
>= nearest(r4, -1.0)) &
call abort()
! 0--- < 0--
if (nearest(nearest(nearest(r4, -1.0), -1.0), -1.0) &
>= nearest(nearest(r4, -1.0), -1.0)) &
call abort()
! 0-+ = 0
if (nearest(nearest(r4, -1.0), 1.0) &
/= r4) &
call abort()
! 0--+ = 0-
if (nearest(nearest(nearest(r4, -1.0), -1.0), 1.0) &
/= nearest(r4, -1.0)) &
call abort()
! 0--++ = 0
if (nearest(nearest(nearest(nearest(r4, -1.0), -1.0), 1.0), 1.0) &
/= r4) &
call abort()
r4 = 42.0_4
! 42++ > 42+
if (nearest(nearest(r4, 1.0), 1.0) &
<= nearest(r4, 1.0)) &
call abort()
! 42-- < 42-
if (nearest(nearest(r4, -1.0), -1.0) &
>= nearest(r4, -1.0)) &
call abort()
! 42-+ = 42
if (nearest(nearest(r4, -1.0), 1.0) &
/= r4) &
call abort()
! 42+- = 42
if (nearest(nearest(r4, 1.0), -1.0) &
/= r4) &
call abort()
r4 = 0.0
! INF+ = INF
if (nearest(1.0/r4, 1.0) /= 1.0/r4) call abort()
! -INF- = -INF
if (nearest(-1.0/r4, -1.0) /= -1.0/r4) call abort()
! NAN- = NAN
if (.not.isnan(nearest(0.0/r4, 1.0))) call abort()
! NAN+ = NAN
if (.not.isnan(nearest(0.0/r4, -1.0))) call abort()
! Double precision with single-precision sign
r8 = 0.0_8
! 0+ > 0
if (nearest(r8, 1.0) &
<= r8) &
call abort()
! 0++ > 0+
if (nearest(nearest(r8, 1.0), 1.0) &
<= nearest(r8, 1.0)) &
call abort()
! 0+++ > 0++
if (nearest(nearest(nearest(r8, 1.0), 1.0), 1.0) &
<= nearest(nearest(r8, 1.0), 1.0)) &
call abort()
! 0+- = 0
if (nearest(nearest(r8, 1.0), -1.0) &
/= r8) &
call abort()
! 0++- = 0+
if (nearest(nearest(nearest(r8, 1.0), 1.0), -1.0) &
/= nearest(r8, 1.0)) &
call abort()
! 0++-- = 0
if (nearest(nearest(nearest(nearest(r8, 1.0), 1.0), -1.0), -1.0) &
/= r8) &
call abort()
! 0- < 0
if (nearest(r8, -1.0) &
>= r8) &
call abort()
! 0-- < 0+
if (nearest(nearest(r8, -1.0), -1.0) &
>= nearest(r8, -1.0)) &
call abort()
! 0--- < 0--
if (nearest(nearest(nearest(r8, -1.0), -1.0), -1.0) &
>= nearest(nearest(r8, -1.0), -1.0)) &
call abort()
! 0-+ = 0
if (nearest(nearest(r8, -1.0), 1.0) &
/= r8) &
call abort()
! 0--+ = 0-
if (nearest(nearest(nearest(r8, -1.0), -1.0), 1.0) &
/= nearest(r8, -1.0)) &
call abort()
! 0--++ = 0
if (nearest(nearest(nearest(nearest(r8, -1.0), -1.0), 1.0), 1.0) &
/= r8) &
call abort()
r8 = 42.0_8
! 42++ > 42+
if (nearest(nearest(r8, 1.0), 1.0) &
<= nearest(r8, 1.0)) &
call abort()
! 42-- < 42-
if (nearest(nearest(r8, -1.0), -1.0) &
>= nearest(r8, -1.0)) &
call abort()
! 42-+ = 42
if (nearest(nearest(r8, -1.0), 1.0) &
/= r8) &
call abort()
! 42+- = 42
if (nearest(nearest(r8, 1.0), -1.0) &
/= r8) &
call abort()
r4 = 0.0
! INF+ = INF
if (nearest(1.0/r4, 1.0) /= 1.0/r4) call abort()
! -INF- = -INF
if (nearest(-1.0/r4, -1.0) /= -1.0/r4) call abort()
! NAN- = NAN
if (.not.isnan(nearest(0.0/r4, 1.0))) call abort()
! NAN+ = NAN
if (.not.isnan(nearest(0.0/r4, -1.0))) call abort()
! Single precision with double-precision sign
r4 = 0.0_4
! 0+ > 0
if (nearest(r4, 1.0d0) &
<= r4) &
call abort()
! 0++ > 0+
if (nearest(nearest(r4, 1.0d0), 1.0d0) &
<= nearest(r4, 1.0d0)) &
call abort()
! 0+++ > 0++
if (nearest(nearest(nearest(r4, 1.0d0), 1.0d0), 1.0d0) &
<= nearest(nearest(r4, 1.0d0), 1.0d0)) &
call abort()
! 0+- = 0
if (nearest(nearest(r4, 1.0d0), -1.0d0) &
/= r4) &
call abort()
! 0++- = 0+
if (nearest(nearest(nearest(r4, 1.0d0), 1.0d0), -1.0d0) &
/= nearest(r4, 1.0d0)) &
call abort()
! 0++-- = 0
if (nearest(nearest(nearest(nearest(r4, 1.0d0), 1.0d0), -1.0d0), -1.0d0) &
/= r4) &
call abort()
! 0- < 0
if (nearest(r4, -1.0d0) &
>= r4) &
call abort()
! 0-- < 0+
if (nearest(nearest(r4, -1.0d0), -1.0d0) &
>= nearest(r4, -1.0d0)) &
call abort()
! 0--- < 0--
if (nearest(nearest(nearest(r4, -1.0d0), -1.0d0), -1.0d0) &
>= nearest(nearest(r4, -1.0d0), -1.0d0)) &
call abort()
! 0-+ = 0
if (nearest(nearest(r4, -1.0d0), 1.0d0) &
/= r4) &
call abort()
! 0--+ = 0-
if (nearest(nearest(nearest(r4, -1.0d0), -1.0d0), 1.0d0) &
/= nearest(r4, -1.0d0)) &
call abort()
! 0--++ = 0
if (nearest(nearest(nearest(nearest(r4, -1.0d0), -1.0d0), 1.0d0), 1.0d0) &
/= r4) &
call abort()
r4 = 42.0_4
! 42++ > 42+
if (nearest(nearest(r4, 1.0d0), 1.0d0) &
<= nearest(r4, 1.0d0)) &
call abort()
! 42-- < 42-
if (nearest(nearest(r4, -1.0d0), -1.0d0) &
>= nearest(r4, -1.0d0)) &
call abort()
! 42-+ = 42
if (nearest(nearest(r4, -1.0d0), 1.0d0) &
/= r4) &
call abort()
! 42+- = 42
if (nearest(nearest(r4, 1.0d0), -1.0d0) &
/= r4) &
call abort()
r4 = 0.0
! INF+ = INF
if (nearest(1.0d0/r4, 1.0d0) /= 1.0d0/r4) call abort()
! -INF- = -INF
if (nearest(-1.0d0/r4, -1.0d0) /= -1.0d0/r4) call abort()
! NAN- = NAN
if (.not.isnan(nearest(0.0/r4, 1.0d0))) call abort()
! NAN+ = NAN
if (.not.isnan(nearest(0.0/r4, -1.0d0))) call abort()
! Double precision with double-precision sign
r8 = 0.0_8
! 0+ > 0
if (nearest(r8, 1.0d0) &
<= r8) &
call abort()
! 0++ > 0+
if (nearest(nearest(r8, 1.0d0), 1.0d0) &
<= nearest(r8, 1.0d0)) &
call abort()
! 0+++ > 0++
if (nearest(nearest(nearest(r8, 1.0d0), 1.0d0), 1.0d0) &
<= nearest(nearest(r8, 1.0d0), 1.0d0)) &
call abort()
! 0+- = 0
if (nearest(nearest(r8, 1.0d0), -1.0d0) &
/= r8) &
call abort()
! 0++- = 0+
if (nearest(nearest(nearest(r8, 1.0d0), 1.0d0), -1.0d0) &
/= nearest(r8, 1.0d0)) &
call abort()
! 0++-- = 0
if (nearest(nearest(nearest(nearest(r8, 1.0d0), 1.0d0), -1.0d0), -1.0d0) &
/= r8) &
call abort()
! 0- < 0
if (nearest(r8, -1.0d0) &
>= r8) &
call abort()
! 0-- < 0+
if (nearest(nearest(r8, -1.0d0), -1.0d0) &
>= nearest(r8, -1.0d0)) &
call abort()
! 0--- < 0--
if (nearest(nearest(nearest(r8, -1.0d0), -1.0d0), -1.0d0) &
>= nearest(nearest(r8, -1.0d0), -1.0d0)) &
call abort()
! 0-+ = 0
if (nearest(nearest(r8, -1.0d0), 1.0d0) &
/= r8) &
call abort()
! 0--+ = 0-
if (nearest(nearest(nearest(r8, -1.0d0), -1.0d0), 1.0d0) &
/= nearest(r8, -1.0d0)) &
call abort()
! 0--++ = 0
if (nearest(nearest(nearest(nearest(r8, -1.0d0), -1.0d0), 1.0d0), 1.0d0) &
/= r8) &
call abort()
r8 = 42.0_8
! 42++ > 42+
if (nearest(nearest(r8, 1.0d0), 1.0d0) &
<= nearest(r8, 1.0d0)) &
call abort()
! 42-- < 42-
if (nearest(nearest(r8, -1.0d0), -1.0d0) &
>= nearest(r8, -1.0d0)) &
call abort()
! 42-+ = 42
if (nearest(nearest(r8, -1.0d0), 1.0d0) &
/= r8) &
call abort()
! 42+- = 42
if (nearest(nearest(r8, 1.0d0), -1.0d0) &
/= r8) &
call abort()
r4 = 0.0
! INF+ = INF
if (nearest(1.0d0/r4, 1.0d0) /= 1.0d0/r4) call abort()
! -INF- = -INF
if (nearest(-1.0d0/r4, -1.0d0) /= -1.0d0/r4) call abort()
! NAN- = NAN
if (.not.isnan(nearest(0.0/r4, 1.0d0))) call abort()
! NAN+ = NAN
if (.not.isnan(nearest(0.0/r4, -1.0d0))) call abort()
end program test
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