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ZBasic System Library 97 ZX Microcontroller Family Fmt Type Function returning String Invocation Fmt(val, fracDigits) Parameter Method Type Description val ByVal Single The value to convert to a string. fracDigits ByVal Byte The number of digits to produce following the decimal point. Discussion This function returns a String that represents the value of the val parameter. The string will have a number of digits following the decimal point as specified by the fracDigits parameter. The maximum number of digits to the right of the decimal point is 6. If the fracDigits parameter specifies a larger number, it will be ignored and 6 will be used. For very large and very small values, the returned string may be in scientific notation form. Also, some special cases are detected resulting in the strings shown in the table below. See the System Library function SngClass() for more information about the special values. Special Value Result¹ NaN "*.**". ±Infinity "&.&&" Denormalized value "#.##" 1 The number of special characters following the decimal point will be the same as the number of fraction digits that would have been generated had the value been normal. Compatibility In BasicX, the maximum number of fraction digits is 3 and the valid range of the value parameter is – 999.0 to +999.0. If either of those ranges is exceeded, BasicX produces a string containing a single asterisk. Moreover, no provision is made for detecting special values such as NaN.