IEEE binary128: 113 significand bits, normal exponents -16382 through 16383, subnormals through 2^-16494. Portable software arithmetic retains all 128 bits. Finite values only; ties-to-even rounding.
Signature
Integer arithmetic checks overflow; floating-point arithmetic rounds each operation at its declared precision and rejects nonfinite results. Mixed representations require explicit conversion, which rejects loss of range or precision. Values serialize as decimal strings so JSON hosts retain the exact value.
Methods
Examples
Calculate at a declared precision
Both operands have this dtype; changing the annotation changes its range and precision.
Devices
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Connection settings
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main.kj
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Output 0
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State
Compile source to inspect its values.
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Expected output
42
Rust definition
Rust SDK Scalar with an explicit dtype and validated bits; exact scalar JSON uses strings.
View Rust documentation →Support: runtime