0e1

0e1 is a numeric literal that uses decimal scientific notation to represent a number as a times ten raised to the power of b, where b is the exponent. In this form, the significand a is 0 and the exponent b is 1, so the value is 0 × 10^1.

Thus 0e1 equals zero. In floating-point systems such as IEEE 754, this value is represented as a zero, typically as positive zero (0.0). Some environments and operations may preserve a negative zero if the sign bit is set, so -0e1 would yield -0.0 in those contexts. Nevertheless, multiplying a zero significand by any finite power of ten yields zero.

0e1 appears in many languages and data formats that support scientific notation, including Python, JavaScript, Java, C, and JSON. It is convenient for writing and parsing numbers that span large ranges of magnitude, even though in the specific case of zero the exponent has no effect on the numeric value.

Because the leading coefficient is zero, any expression using 0e with a finite exponent evaluates to zero. When parsing numeric literals from text, it is important to distinguish between the string "0e1" and its numeric value after parsing; the string may also be used in identifiers or tokens in some languages, depending on syntax rules.