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Showing content from http://docs.leaflabs.com/static.leaflabs.com/pub/leaflabs/maple-docs/latest/lang/cpp/floatcast.html below:

float() (cast)Â¶

Converts a value to the float data type. Here is an example (see the constants reference for an explanation of the “2.0f”):

int x = 2;
float f = float(x);  // f now holds 2.0f, a float value

The value x can be of any type. However, if x is not a number (like an int), you will get strange results.

See the float reference for details about the precision and limitations of float values on the Maple.