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Ax51 User's Guide
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Macro Processor Standard Macro Processor 
Standard Macro Controls Defining Standard Macros Calling Standard Macros Local Symbols Exiting a Macro Built-in Macros REPT IRP IRPC Standard Macro Operators NUL Operator & Operator < and > Operators % Operator ;; Operator ! Operator MPL Macro Processor MPL Macro Overview MPL Meta Character Defining MPL Macros Calling MPL Macros Local Symbols Expressions Common Functions Bracket Function Comment Function Escape Function METACHAR Function SET Function EVAL Function Comparison Functions Conditional Functions EXIT Function IF Function REPEAT Function WHILE Function Console I/O Functions String Functions LEN Function MATCH Function SUBSTR Function Advanced Literal Delimiters Blank Delimiters Identifier Delimiters Literal and Normal Modes C Preprocessor Exceptions Side-Effects Predefined Macros Examples Error Messages AppendixComparison Functions
The MPL comparison functions compare two string arguments and return a value based on the comparison. If the function evaluates to TRUE, the function returns a value of 1. If the function evaluates to FALSE, the function returns a value of 0. The arguments to these functions may contain macro calls (which are expanded before the comparison occurs).
| Function | Description |
|---|---|
| %EOS (arg1, arg2) | The EOS function compares arg1 and arg2 and returns a value of TRUE if they are identical. |
| %NES (arg1, arg2) | The NES function compares arg1 and arg2 and returns a value of TRUE if they are different. |
| %LTS (arg1, arg2) | The LTS function compares arg1 and arg2 and returns a value of TRUE if arg1 is less than arg2. |
| %LES (arg1, arg2) | The LES function compares arg1 and arg2 and returns a value of TRUE if arg1 is less than or equal arg2. |
| %GTS (arg1, arg2) | The GTS function compares arg1 and arg2 and returns a value of TRUE if arg1 is greater than arg2. |
| %GES (arg1, arg2) | The GES function compares arg1 and arg2 and returns a value of TRUE if arg1 is greater than or equal arg2. |
Examples
%EQS (Ax51, Ax51)
The above comparison is FALSE (0). The space after the comma is part of the second argument.
%LTS (Ax51,ax51)
The above comparison is TRUE (1). The lowercase characters have a higher ASCII value than the uppercase characters.
%GTS (10,16)
The above comparison is FALSE (0). These macros compare strings—not numerical values. ASCII character 6 is greater than ASCII character 1.
%GES (ax51,ax51 )
The above comparison is FALSE (0). The space at the end of the second argument makes the second argument greater than the first.
%*DEFINE (VAR1) (Ax51) %*DEFINE (VAR2) (%VAR1) %EQS (%VAR1,%VAR2)
The above comparison is TRUE (1). The EQS Macro arguments expand to %EQS(Ax51,Ax51).
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