Files
mercury/tests/general/float_test.m
Zoltan Somogyi 33eb3028f5 Clean up the tests in half the test directories.
tests/accumulator/*.m:
tests/analysis_*/*.m:
tests/benchmarks*/*.m:
tests/debugger*/*.{m,exp,inp}:
tests/declarative_debugger*/*.{m,exp,inp}:
tests/dppd*/*.m:
tests/exceptions*/*.m:
tests/general*/*.m:
tests/grade_subdirs*/*.m:
tests/hard_coded*/*.m:
    Make these tests use four-space indentation, and ensure that
    each module is imported on its own line. (I intend to use the latter
    to figure out which subdirectories' tests can be executed in parallel.)

    These changes usually move code to different lines. For the debugger tests,
    specify the new line numbers in .inp files and expect them in .exp files.
2015-02-14 20:14:03 +11:00

111 lines
3.4 KiB
Mathematica

%---------------------------------------------------------------------------%
% vim: ts=4 sw=4 et ft=mercury
%---------------------------------------------------------------------------%
%
% A very basic check of floating point arithmetic and string__to_float.
% Now tests maths library stuff too.
:- module float_test.
:- interface.
:- import_module io.
:- pred main(io__state, io__state).
:- mode main(di, uo) is det.
:- implementation.
:- import_module float.
:- import_module list.
:- import_module math.
:- import_module string.
main -->
( { string__to_float("1234.5678", F) } ->
write_message("1234.5678: ", F)
;
io__write_string("can't parse 1234.5678")
),
test(3.0, 4.0),
test(41.0, -3.0),
test_constants,
test_math_constants,
test_rounding(2.7),
test_rounding(-3.6),
test_power(2.2),
test_trig(0.5),
test_inv_trig(0.6).
:- pred test(float, float, io__state, io__state).
:- mode test(in, in, di, uo) is det.
test(X, Y) -->
{
Plus = X + Y,
Times = X * Y,
Minus = X - Y,
Divide = X / Y,
Pow = math__pow(X, Y)
},
write_message("X: ", X),
write_message("Y: ", Y),
write_message("X + Y: ", Plus),
write_message("X * Y: ", Times),
write_message("X - Y: ", Minus),
write_message("X / Y: ", Divide),
write_message("X ^ Y: ", Pow).
:- pred write_message(string, float, io__state, io__state).
:- mode write_message(in, in, di, uo) is det.
write_message(String, Float) -->
{ string__format("%s%6.3g\n", [s(String), f(Float)], Message) },
io__write_string(Message).
:- pred test_constants(io__state :: di, io__state :: uo) is det.
test_constants -->
write_message("Float max: ", float__max),
write_message("Float min: ", float__min),
write_message("Float epsilon: ", float__epsilon).
:- pred test_math_constants(io__state :: di, io__state :: uo) is det.
test_math_constants -->
write_message("Pi: ", math__pi),
write_message("e: ", math__e).
:- pred test_rounding(float :: in, io__state :: di, io__state :: uo) is det.
test_rounding(X) -->
write_message("X: ", X),
write_message("ceil(X): ", math__ceiling(X)),
write_message("floor(X): ", math__floor(X)),
write_message("round(X): ", math__round(X)),
write_message("truncate(X): ", math__truncate(X)).
:- pred test_power(float :: in, io__state :: di, io__state :: uo) is det.
test_power(X) -->
write_message("X: ", X),
write_message("sqrt(X): ", math__sqrt(X)),
write_message("ln(X): ", math__ln(X)),
write_message("log2(X): ", math__log2(X)),
write_message("log10(X): ", math__log10(X)),
write_message("log(2.1, X): ", math__log(2.1, X)),
write_message("exp(X): ", math__exp(X)).
:- pred test_trig(float :: in, io__state :: di, io__state :: uo) is det.
test_trig(X) -->
write_message("X: ", X),
write_message("sin(X): ", math__sin(X)),
write_message("cos(X): ", math__cos(X)),
write_message("tan(X): ", math__tan(X)),
write_message("sinh(X): ", math__sinh(X)),
write_message("cosh(X): ", math__cosh(X)),
write_message("tanh(X): ", math__tanh(X)),
write_message("atan2(sin(X), cos(X)): ",
math__atan2(math__sin(X), math__cos(X))).
:- pred test_inv_trig(float :: in, io__state :: di, io__state :: uo) is det.
test_inv_trig(X) -->
write_message("X: ", X),
write_message("asin(X): ", math__asin(X)),
write_message("acos(X): ", math__acos(X)),
write_message("atan(X): ", math__atan(X)).