negvdi2_test.zig (1209B) - Raw
1 const negv = @import("negv.zig"); 2 const testing = @import("std").testing; 3 4 fn test__negvdi2(a: i64, expected: i64) !void { 5 const result = negv.__negvdi2(a); 6 try testing.expectEqual(expected, result); 7 } 8 9 test "negvdi2" { 10 // -2^63 <= i64 <= 2^63-1 11 // 2^63 = 9223372036854775808 12 // 2^63-1 = 9223372036854775807 13 // TODO write panic handler for testing panics 14 //try test__negvdi2(-9223372036854775808, -5); // tested with return -5; and panic 15 try test__negvdi2(-9223372036854775807, 9223372036854775807); 16 try test__negvdi2(-9223372036854775806, 9223372036854775806); 17 try test__negvdi2(-9223372036854775805, 9223372036854775805); 18 try test__negvdi2(-9223372036854775804, 9223372036854775804); 19 try test__negvdi2(-42, 42); 20 try test__negvdi2(-7, 7); 21 try test__negvdi2(-1, 1); 22 try test__negvdi2(0, 0); 23 try test__negvdi2(1, -1); 24 try test__negvdi2(7, -7); 25 try test__negvdi2(42, -42); 26 try test__negvdi2(9223372036854775804, -9223372036854775804); 27 try test__negvdi2(9223372036854775805, -9223372036854775805); 28 try test__negvdi2(9223372036854775806, -9223372036854775806); 29 try test__negvdi2(9223372036854775807, -9223372036854775807); 30 }