| 1 | const std = @import("std"); |
| 2 | const fmod_f128 = @import("fmod.zig").fmod_f128; |
| 3 | const testing = std.testing; |
| 4 | |
| 5 | fn test_fmod_f128(a: f128, b: f128, exp: f128) !void { |
| 6 | const res = fmod_f128(a, b); |
| 7 | try testing.expect(exp == res); |
| 8 | } |
| 9 | |
| 10 | fn test_fmod_f128_nans() !void { |
| 11 | try testing.expect(std.math.isNan(fmod_f128(1.0, std.math.nan(f128)))); |
| 12 | try testing.expect(std.math.isNan(fmod_f128(1.0, -std.math.nan(f128)))); |
| 13 | try testing.expect(std.math.isNan(fmod_f128(std.math.nan(f128), 1.0))); |
| 14 | try testing.expect(std.math.isNan(fmod_f128(-std.math.nan(f128), 1.0))); |
| 15 | } |
| 16 | |
| 17 | fn test_fmod_f128_infs() !void { |
| 18 | try testing.expect(fmod_f128(1.0, std.math.inf(f128)) == 1.0); |
| 19 | try testing.expect(fmod_f128(1.0, -std.math.inf(f128)) == 1.0); |
| 20 | try testing.expect(std.math.isNan(fmod_f128(std.math.inf(f128), 1.0))); |
| 21 | try testing.expect(std.math.isNan(fmod_f128(-std.math.inf(f128), 1.0))); |
| 22 | } |
| 23 | |
| 24 | test fmod_f128 { |
| 25 | try test_fmod_f128(6.8, 4.0, 2.8); |
| 26 | try test_fmod_f128(6.8, -4.0, 2.8); |
| 27 | try test_fmod_f128(-6.8, 4.0, -2.8); |
| 28 | try test_fmod_f128(-6.8, -4.0, -2.8); |
| 29 | try test_fmod_f128(3.0, 2.0, 1.0); |
| 30 | try test_fmod_f128(-5.0, 3.0, -2.0); |
| 31 | try test_fmod_f128(3.0, 2.0, 1.0); |
| 32 | try test_fmod_f128(1.0, 2.0, 1.0); |
| 33 | try test_fmod_f128(0.0, 1.0, 0.0); |
| 34 | try test_fmod_f128(-0.0, 1.0, -0.0); |
| 35 | try test_fmod_f128(7046119.0, 5558362.0, 1487757.0); |
| 36 | try test_fmod_f128(9010357.0, 1957236.0, 1181413.0); |
| 37 | try test_fmod_f128(5192296858534827628530496329220095, 10.0, 5.0); |
| 38 | try test_fmod_f128(5192296858534827628530496329220095, 922337203681230954775807, 220474884073715748246157); |
| 39 | |
| 40 | // Denormals |
| 41 | const a1: f128 = 0xedcb34a235253948765432134674p-16494; |
| 42 | const b1: f128 = 0x5d2e38791cfbc0737402da5a9518p-16494; |
| 43 | const exp1: f128 = 0x336ec3affb2db8618e4e7d5e1c44p-16494; |
| 44 | try test_fmod_f128(a1, b1, exp1); |
| 45 | const a2: f128 = 0x0.7654_3210_fdec_ba98_7654_3210_fdecp-16382; |
| 46 | const b2: f128 = 0x0.0012_fdac_bdef_1234_fdec_3222_1111p-16382; |
| 47 | const exp2: f128 = 0x0.0001_aecd_9d66_4a6e_67b7_d7d0_a901p-16382; |
| 48 | try test_fmod_f128(a2, b2, exp2); |
| 49 | |
| 50 | try test_fmod_f128_nans(); |
| 51 | try test_fmod_f128_infs(); |
| 52 | } |