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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
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37
Task/Integer-overflow/D/integer-overflow.d Normal file
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void main() @safe {
import std.stdio;
writeln("Signed 32-bit:");
writeln(-(-2_147_483_647 - 1));
writeln(2_000_000_000 + 2_000_000_000);
writeln(-2147483647 - 2147483647);
writeln(46_341 * 46_341);
writeln((-2_147_483_647 - 1) / -1);
writeln("\nSigned 64-bit:");
writeln(-(-9_223_372_036_854_775_807 - 1));
writeln(5_000_000_000_000_000_000 + 5_000_000_000_000_000_000);
writeln(-9_223_372_036_854_775_807 - 9_223_372_036_854_775_807);
writeln(3_037_000_500 * 3_037_000_500);
writeln((-9_223_372_036_854_775_807 - 1) / -1);
writeln("\nUnsigned 32-bit:");
writeln(-4_294_967_295U);
writeln(3_000_000_000U + 3_000_000_000U);
writeln(2_147_483_647U - 4_294_967_295U);
writeln(65_537U * 65_537U);
writeln("\nUnsigned 64-bit:");
writeln(-18_446_744_073_709_551_615UL);
writeln(10_000_000_000_000_000_000UL + 10_000_000_000_000_000_000UL);
writeln(9_223_372_036_854_775_807UL - 18_446_744_073_709_551_615UL);
writeln(4_294_967_296UL * 4_294_967_296UL);
import core.checkedint;
bool overflow = false;
// Checked signed multiplication.
// Eventually such functions will be recognized by D compilers
// and they will be implemented with efficient intrinsics.
immutable r = muls(46_341, 46_341, overflow);
writeln("\n", r, " ", overflow);
}