0e10

0e10 is a numeric literal that uses scientific notation. In decimal scientific notation, numbers are written as a times ten raised to the b, where a is the significand (mantissa) and b is the exponent. When a equals zero, the value is zero regardless of the exponent, so 0e10 represents zero.

In standard decimal representation, this is equivalent to 0 or 0.0. The notation is common in many programming languages and calculators that support floating-point literals, with 0e10 being parsed as 0.0 or 0 depending on language and type.

In practice, 0e10 demonstrates a property of floating-point literals: any mantissa times ten raised to the exponent with mantissa zero yields zero. Some languages differentiate between +0 and -0 at the hardware level according to IEEE 754, but a literal like 0e10 is typically treated as positive zero unless a unary minus is applied, yielding -0.0.

The term is mostly of theoretical or parsing interest because its value conveys no magnitude beyond zero, but it can appear in code generated by automated tools or in inputs that rely on uniform formatting of numbers with exponents. For comparison, larger or nonzero mantissas such as 1e3 yield 1000, while small mantissas such as 1e-6 yield 0.000001.

See also: scientific notation, floating-point arithmetic, IEEE 754, floating-point literals, exponential notation.