Decimal

• The decimal type corresponds to a subset of IEEE 754-2008 128-bit decimal (radix 10) floating point numbers.
• Represents decimal fractions exactly by preserving precision.
• Literal uses the suffix d.

Sample

import ballerina/io;

public function main() {
    //Float doesn't represent decimal fractions exactly.
    float f = 100.10 - 0.01;
    io:println(f);

    //Decimal represents decimal fractions exactly.
    decimal d = 100.10 - 0.01;
    io:println(d);
}

Output

100.08999999999999
100.09