| ! { dg-do run } |
| ! { dg-additional-options "-fno-range-check" } |
| ! |
| ! Check compile-time simplification of functions FRACTION, EXPONENT, |
| ! SPACING, RRSPACING and SET_EXPONENT for special values. |
| |
| program test |
| implicit none |
| real, parameter :: inf = 2 * huge(0.) |
| real, parameter :: nan = 0. / 0. |
| |
| call check_positive_zero(fraction(0.)) |
| call check_negative_zero(fraction(-0.)) |
| if (.not. isnan(fraction(inf))) STOP 1 |
| if (.not. isnan(fraction(-inf))) STOP 2 |
| if (.not. isnan(fraction(nan))) STOP 3 |
| |
| if (exponent(0.) /= 0) STOP 4 |
| if (exponent(-0.) /= 0) STOP 5 |
| if (exponent(inf) /= huge(0)) STOP 6 |
| if (exponent(-inf) /= huge(0)) STOP 7 |
| if (exponent(nan) /= huge(0)) STOP 8 |
| |
| if (spacing(0.) /= spacing(tiny(0.))) STOP 9 |
| if (spacing(-0.) /= spacing(tiny(0.))) STOP 10 |
| if (.not. isnan(spacing(inf))) STOP 11 |
| if (.not. isnan(spacing(-inf))) STOP 12 |
| if (.not. isnan(spacing(nan))) STOP 13 |
| |
| call check_positive_zero(rrspacing(0.)) |
| call check_positive_zero(rrspacing(-0.)) |
| if (.not. isnan(rrspacing(inf))) STOP 14 |
| if (.not. isnan(rrspacing(-inf))) STOP 15 |
| if (.not. isnan(rrspacing(nan))) STOP 16 |
| |
| call check_positive_zero(set_exponent(0.,42)) |
| call check_negative_zero(set_exponent(-0.,42)) |
| if (.not. isnan(set_exponent(inf, 42))) STOP 17 |
| if (.not. isnan(set_exponent(-inf, 42))) STOP 18 |
| if (.not. isnan(set_exponent(nan, 42))) STOP 19 |
| |
| contains |
| |
| subroutine check_positive_zero(x) |
| use ieee_arithmetic |
| implicit none |
| real, value :: x |
| |
| if (ieee_class (x) /= ieee_positive_zero) STOP 20 |
| end |
| |
| subroutine check_negative_zero(x) |
| use ieee_arithmetic |
| implicit none |
| real, value :: x |
| |
| if (ieee_class (x) /= ieee_negative_zero) STOP 21 |
| end |
| |
| end |
