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88047bbb45
tests/general/float_test.exp3:
tests/general/float_test.m:
tests/general/read_dir_regression.exp4:
tests/general/read_dir_regression.m:
tests/hard_coded/remove_file.exp2:
tests/hard_coded/remove_file.m:
Delete Erlang backend specific expected outputs.
tests/hard_coded/Mmakefile:
tests/hard_coded/erlang_deconstruct.exp:
tests/hard_coded/erlang_deconstruct.m:
tests/hard_coded/existential_list.exp:
tests/hard_coded/existential_list.m:
tests/valid/Mmakefile:
tests/valid/erl_ite_vars.m:
tests/valid/zf_erlang_bug.m:
Delete erlang target specific tests.
tests/*:
Delete Erlang foreign procs and foreign types.
149 lines
4.8 KiB
Mathematica
149 lines
4.8 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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% A very basic check of floating point arithmetic and string.to_float.
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% Now tests maths library stuff too.
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%
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% The .exp file is for grades that use double-precision floats.
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% The .exp2 file is for grades that use single-precision floats.
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%
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%---------------------------------------------------------------------------%
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:- module float_test.
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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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%---------------------------------------------------------------------------%
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%---------------------------------------------------------------------------%
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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 math.
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:- import_module string.
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%---------------------------------------------------------------------------%
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main(!IO) :-
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( if string.to_float("1234.5678", F) then
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write_message("1234.5678: ", F, !IO)
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else
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io.write_string("can't parse 1234.5678", !IO)
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),
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test_arithmetic(3.0, 4.0, !IO),
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test_arithmetic(41.0, -3.0, !IO),
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test_constants(!IO),
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test_math_constants(!IO),
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test_rounding(0.0, !IO),
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test_rounding(2.7, !IO),
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test_rounding(-3.6, !IO),
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test_rounding(float.infinity, !IO),
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test_rounding(-float.infinity, !IO),
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test_power(2.2, !IO),
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test_trig(0.5, !IO),
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test_inv_trig(0.6, !IO).
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:- pred write_message(string::in, float::in, io::di, io::uo) is det.
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write_message(String, Float, !IO) :-
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io.format("%s%6.3g\n", [s(String), f(Float)], !IO).
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%---------------------------------------------------------------------------%
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:- pred test_arithmetic(float::in, float::in, io::di, io::uo) is det.
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test_arithmetic(X, Y, !IO) :-
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Plus = X + Y,
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Times = X * Y,
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Minus = X - Y,
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Divide = X / Y,
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Pow = math.pow(X, Y),
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write_message("X: ", X, !IO),
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write_message("Y: ", Y, !IO),
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write_message("X + Y: ", Plus, !IO),
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write_message("X * Y: ", Times, !IO),
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write_message("X - Y: ", Minus, !IO),
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write_message("X / Y: ", Divide, !IO),
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write_message("X ^ Y: ", Pow, !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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:- pred test_constants(io::di, io::uo) is det.
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test_constants(!IO) :-
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write_message("Float max: ", float.max, !IO),
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write_message("Float min: ", float.min, !IO),
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write_message("Float epsilon: ", float.epsilon, !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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:- pred test_math_constants(io::di, io::uo) is det.
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test_math_constants(!IO) :-
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write_message("Pi: ", math.pi, !IO),
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write_message("e: ", math.e, !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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:- pred test_rounding(float::in, io::di, io::uo) is det.
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test_rounding(X, !IO) :-
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write_message("X: ", X, !IO),
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write_message("ceiling(X): ", math.ceiling(X), !IO),
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write_message("floor(X): ", math.floor(X), !IO),
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write_message("round(X): ", math.round(X), !IO),
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write_message("truncate(X): ", math.truncate(X), !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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:- pred test_power(float::in, io::di, io::uo) is det.
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test_power(X, !IO) :-
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write_message("X: ", X, !IO),
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write_message("sqrt(X): ", math.sqrt(X), !IO),
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write_message("ln(X): ", math.ln(X), !IO),
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write_message("log2(X): ", math.log2(X), !IO),
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write_message("log10(X): ", math.log10(X), !IO),
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write_message("log(2.1, X): ", math.log(2.1, X), !IO),
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write_message("exp(X): ", math.exp(X), !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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:- pred test_trig(float::in, io::di, io::uo) is det.
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test_trig(X, !IO) :-
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write_message("X: ", X, !IO),
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write_message("sin(X): ", math.sin(X), !IO),
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write_message("cos(X): ", math.cos(X), !IO),
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write_message("tan(X): ", math.tan(X), !IO),
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write_message("sinh(X): ", math.sinh(X), !IO),
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write_message("cosh(X): ", math.cosh(X), !IO),
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write_message("tanh(X): ", math.tanh(X), !IO),
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write_message("atan2(sin(X), cos(X)): ",
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math.atan2(math.sin(X), math.cos(X)), !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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:- pred test_inv_trig(float::in, io::di, io::uo) is det.
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test_inv_trig(X, !IO) :-
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write_message("X: ", X, !IO),
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write_message("asin(X): ", math.asin(X), !IO),
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write_message("acos(X): ", math.acos(X), !IO),
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write_message("atan(X): ", math.atan(X), !IO),
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io.nl(!IO).
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%---------------------------------------------------------------------------%
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%---------------------------------------------------------------------------%
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