Truncates a real number to an integer.
function Trunc(X: Extended): Int64;
Int64 Trunc(Extended X);
System
In Delphi code, the Trunc function truncates a real-type value to an integer-type value. X is a real-type expression. Trunc returns an Int64 value that is the value of X rounded toward zero.
If the truncated value of X is not within the Int64 range, an EInvalidOp exception is raised.
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