Get a subroutine argument as a floating-point value
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WSupported on Windows
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USupported on Unix
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double get_xarg_fval(DESCRIP **argblock, int arg)
Arguments
argblock
The argument block pointer passed by the Synergy DBL subroutine to the C function.
arg
The number of the argument to reference.
Discussion
The get_xarg_fval function gets a subroutine argument and converts it into a floating-point value of the native C “double” type.
The return value is the referenced argument evaluated as a double. If the argument wasn’t passed, the returned value is zero. If the argument is alpha, it is treated as if it were decimal.
