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

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