16 lines
503 B
Zig
16 lines
503 B
Zig
const std = @import("std");
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const expect = std.testing.expect;
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/// Returns a * FLT_RADIX ^ exp.
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///
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/// Zig only supports binary base IEEE-754 floats. Hence FLT_RADIX=2, and this is an alias for ldexp.
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pub const scalbn = @import("ldexp.zig").ldexp;
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test scalbn {
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// Verify we are using base 2.
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try expect(scalbn(@as(f16, 1.5), 4) == 24.0);
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try expect(scalbn(@as(f32, 1.5), 4) == 24.0);
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try expect(scalbn(@as(f64, 1.5), 4) == 24.0);
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try expect(scalbn(@as(f128, 1.5), 4) == 24.0);
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}
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