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This procedure converts expression between compatible types.
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This procedure checks type compatibility between expression and specified type and sets expression to specified type if needed.
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This procedure extends integers to new integer type.
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Turbo Pascal uses few functions and procedures to process, check and convert strings - Char type and zero-based character arrays can also be considered as strings.
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Turbo Pascal sometimes needs to convert number types.
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Turbo Pascal checks if values are within limits.
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Turbo Pascal uses a very interesting way of dealing with boolean expressions.
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Loading an expression into registers is a very common task in Turbo Pascal compiler.
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During expression calculation Turbo Pascal stores the value in registers. However, they are limited and some operations can be performed only with specific registers.
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This procedure creates a pointer to any variable reference including procedures and functions.
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