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47 lines
1.6 KiB
Zig
47 lines
1.6 KiB
Zig
const std = @import("std");
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const fmodl = @import("floatfmodl.zig");
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const testing = std.testing;
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fn test_fmodl(a: f128, b: f128, exp: f128) !void {
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const res = fmodl.fmodl(a, b);
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try testing.expect(exp == res);
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}
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fn test_fmodl_nans() !void {
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try testing.expect(std.math.isNan(fmodl.fmodl(1.0, std.math.nan_f128)));
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try testing.expect(std.math.isNan(fmodl.fmodl(1.0, -std.math.nan_f128)));
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try testing.expect(std.math.isNan(fmodl.fmodl(std.math.nan_f128, 1.0)));
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try testing.expect(std.math.isNan(fmodl.fmodl(-std.math.nan_f128, 1.0)));
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}
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fn test_fmodl_infs() !void {
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try testing.expect(fmodl.fmodl(1.0, std.math.inf(f128)) == 1.0);
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try testing.expect(fmodl.fmodl(1.0, -std.math.inf(f128)) == 1.0);
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try testing.expect(std.math.isNan(fmodl.fmodl(std.math.inf(f128), 1.0)));
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try testing.expect(std.math.isNan(fmodl.fmodl(-std.math.inf(f128), 1.0)));
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}
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test "fmodl" {
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try test_fmodl(6.8, 4.0, 2.8);
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try test_fmodl(6.8, -4.0, 2.8);
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try test_fmodl(-6.8, 4.0, -2.8);
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try test_fmodl(-6.8, -4.0, -2.8);
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try test_fmodl(3.0, 2.0, 1.0);
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try test_fmodl(-5.0, 3.0, -2.0);
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try test_fmodl(3.0, 2.0, 1.0);
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try test_fmodl(1.0, 2.0, 1.0);
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try test_fmodl(0.0, 1.0, 0.0);
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try test_fmodl(-0.0, 1.0, -0.0);
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try test_fmodl(7046119.0, 5558362.0, 1487757.0);
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try test_fmodl(9010357.0, 1957236.0, 1181413.0);
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// Denormals
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const a: f128 = 0xedcb34a235253948765432134674p-16494;
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const b: f128 = 0x5d2e38791cfbc0737402da5a9518p-16494;
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const exp: f128 = 0x336ec3affb2db8618e4e7d5e1c44p-16494;
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try test_fmodl(a, b, exp);
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try test_fmodl_nans();
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try test_fmodl_infs();
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}
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