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46 lines
1.2 KiB
Mathematica
46 lines
1.2 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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% This test case tests that the compiler's constant propagation for
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% floating point division produce the same value as that produced
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% by doing the division at runtime.
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% This is a regression test; versions of the compiler prior to Nov 2002
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% failed this test at -O3 and higher.
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%
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:- module float_consistency.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is det.
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:- implementation.
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:- import_module float.
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:- import_module list.
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:- import_module string.
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main(!IO) :-
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Lit_one = 1.0,
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Calc_one = same_as(Lit_one),
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( if Calc_one = Lit_one then
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CalcEqLit = "true"
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else
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CalcEqLit = "false"
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),
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( if
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unchecked_quotient(Calc_one, 9.0)
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= unchecked_quotient(Lit_one, 9.0)
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then
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CalcQEqLitQ = "true"
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else
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CalcQEqLitQ = "false"
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),
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io.format("Calc_one = Lit_one: %s\n", [s(CalcEqLit)], !IO),
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io.format("Calc_one/9.0 = Lit_one/9.0: %s\n", [s(CalcQEqLitQ)], !IO).
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:- func same_as(float) = float.
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:- pragma no_inline(same_as/1).
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same_as(X) = X.
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