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d29871977f
We already have a LICENSE file that covers the Zig Standard Library. We no longer need to remind everyone that the license is MIT in every single file. Previously this was introduced to clarify the situation for a fork of Zig that made Zig's LICENSE file harder to find, and replaced it with their own license that required annual payments to their company. However that fork now appears to be dead. So there is no need to reinforce the copyright notice in every single file.
28 lines
800 B
Zig
28 lines
800 B
Zig
const std = @import("../std.zig");
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const math = std.math;
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const expect = std.testing.expect;
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const maxInt = std.math.maxInt;
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/// Returns whether x is a nan.
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pub fn isNan(x: anytype) bool {
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return x != x;
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}
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/// Returns whether x is a signalling nan.
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pub fn isSignalNan(x: anytype) bool {
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// Note: A signalling nan is identical to a standard nan right now but may have a different bit
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// representation in the future when required.
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return isNan(x);
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}
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test "math.isNan" {
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try expect(isNan(math.nan(f16)));
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try expect(isNan(math.nan(f32)));
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try expect(isNan(math.nan(f64)));
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try expect(isNan(math.nan(f128)));
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try expect(!isNan(@as(f16, 1.0)));
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try expect(!isNan(@as(f32, 1.0)));
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try expect(!isNan(@as(f64, 1.0)));
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try expect(!isNan(@as(f128, 1.0)));
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}
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