A floating-point constant consists of:

• Decimal integer
• Decimal point
• Decimal fraction
• e or E and a signed integer exponent (optional)
• Type suffix: f or F or l or L (optional)

Either decimal integer or decimal fraction (but not both) can be omitted. Either decimal point or letter e (or E) with a signed integer exponent (but not both) can be omitted. These rules allow conventional and scientific (exponent) notations.

Negative floating constants are taken as positive constants with an unary operator minus (-) prefixed.

The mikroC PRO for FT90x limits floating-point constants to the range ±2.2250E * 10^-308 .. ±6.80564774407 * 10³⁸.

If there is a need for a floating-point constant that exceeds these limits, user should add l or L suffix, making the constant a long double type.

Here are some examples:

0.       // = 0.0
-1.23    // = -1.23
23.45e6  // = 23.45 * 10^6
2e-5     // = 2.0 * 10^-5
3E+10    // = 3.0 * 10^10
.09E34   // = 0.09 * 10^34
2.E100L  // = 2.0 * 10^100

The mikroC PRO for FT90x floating-point constants are of the type double. Note that the mikroC PRO for FT90x’s implementation of ANSI Standard considers float and double to be the same type.

Want more examples and libraries? 
Find them on