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zig/std/special/compiler_rt/fixunsdfdi_test.zig

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compiler_rt implementations for __fixuns* functions * add u128 and i128 integer types * add f128 floating point type * implement big integer multiplication (See #405)
2017-08-16 16:07:35 -07:00
const __fixunsdfdi = @import("fixunsdfdi.zig").__fixunsdfdi;
move std/debug.zig to a subdirectory self hosted compiler parser tests do some fuzz testing
2017-12-23 19:08:53 -08:00
const assert = @import("../../index.zig").debug.assert;
compiler_rt implementations for __fixuns* functions * add u128 and i128 integer types * add f128 floating point type * implement big integer multiplication (See #405)
2017-08-16 16:07:35 -07:00
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 01:10:11 -08:00
fn test__fixunsdfdi(a: f64, expected: u64) void {
compiler_rt implementations for __fixuns* functions * add u128 and i128 integer types * add f128 floating point type * implement big integer multiplication (See #405)
2017-08-16 16:07:35 -07:00
const x = __fixunsdfdi(a);
assert(x == expected);
}
test "fixunsdfdi" {
bit shifting safety * add u3, u4, u5, u6, u7 and i3, i4, i5, i6, i7 * shift operations shift amount parameter type is integer with log2 bit width of other param - This enforces not violating undefined behavior on shift amount >= bit width with the type system * clean up math.log, math.ln, math.log2, math.log10 closes #403
2017-08-18 22:32:15 -07:00
//test__fixunsdfdi(0.0, 0);
//test__fixunsdfdi(0.5, 0);
//test__fixunsdfdi(0.99, 0);
compiler_rt implementations for __fixuns* functions * add u128 and i128 integer types * add f128 floating point type * implement big integer multiplication (See #405)
2017-08-16 16:07:35 -07:00
test__fixunsdfdi(1.0, 1);
test__fixunsdfdi(1.5, 1);
test__fixunsdfdi(1.99, 1);
test__fixunsdfdi(2.0, 2);
test__fixunsdfdi(2.01, 2);
test__fixunsdfdi(-0.5, 0);
test__fixunsdfdi(-0.99, 0);
test__fixunsdfdi(-1.0, 0);
test__fixunsdfdi(-1.5, 0);
test__fixunsdfdi(-1.99, 0);
test__fixunsdfdi(-2.0, 0);
test__fixunsdfdi(-2.01, 0);
test__fixunsdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000);
test__fixunsdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000);
test__fixunsdfdi(-0x1.FFFFFEp+62, 0);
test__fixunsdfdi(-0x1.FFFFFCp+62, 0);
test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800);
test__fixunsdfdi(0x1.0000000000000p+63, 0x8000000000000000);
test__fixunsdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00);
test__fixunsdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800);
test__fixunsdfdi(-0x1.FFFFFFFFFFFFFp+62, 0);
test__fixunsdfdi(-0x1.FFFFFFFFFFFFEp+62, 0);
}