1.130 class real

A real object represents a floating point number in PCE. As PCE is designed first of all for developing user interfaces, reals are rarely used and therefore represented as true objects. The behaviour of reals is very similar to the behaviour of class number.

The value of a real object is represented as a double-precision float using the native floating point format of the machine.

See also

class binary_expression

1.130.1 Send methods

real ->minus: real

Subtract argument from value.

real ->plus: real

Add argument to value.

real ->times: real

Multiply value by argument.

real ->divide: real

Basic arithmetic operations. Note that possible resulting floating point exceptions are not handled gracefully in the current implementation.

real ->equal: real

Test if equal to argument.

real ->larger_equal: real

Test if larger-or-equal than argument.

real ->less_equal: real

Test if less-or-equal than argument.

real ->not_equal: real

Test if not-equal to argument.

real ->smaller: real

Test if less than argument.

real ->larger: real

Compare the receiver's real<-value to the real<-value of the argument. It real->larger succeeds, the receiver is larger than the argument. Note that type conversion allows for the comparison of integers and numbers too.

real ->value: real

Copy the real<-value from the real<-value of the argument.

1.130.2 Get methods

real <-catch_all: selector=name, argument=unchecked ... -> copy=real

Non-destructive arithmetic. Create a new real object with the same real<-value, execute the operation and, if the operation succeeds, return the new real. See also number<-catch_all.

real <-value: -> real

Equivalent to object<-self.

Bugs: It might be better to return a copy.