topic Re: Macro resolution and %IF-%Then %Else statements in SAS Programming

Macro resolution and %IF-%Then %Else statements

Punxsutawney — Thu, 13 Aug 2015 17:25:55 GMT

SYMBOLGEN: Macro variable MBR_PED_IND resolves to N

MLOGIC(RUNNER): %IF condition &mbr_ped_ind eq Y is FALSE

SYMBOLGEN: Macro variable GDIST resolves to 319.6732

SYMBOLGEN: Macro variable DIST_LIMIT1 resolves to 10

MLOGIC(RUNNER): %IF condition &gdist le &dist_limit1 is FALSE

SYMBOLGEN: Macro variable GDIST resolves to 319.6732

SYMBOLGEN: Macro variable DIST_LIMIT2 resolves to 20

MLOGIC(RUNNER): %IF condition &gdist le &dist_limit2 is FALSE

SYMBOLGEN: Macro variable GDIST resolves to 319.6732

SYMBOLGEN: Macro variable DIST_LIMIT3 resolves to 30

MLOGIC(RUNNER): %IF condition &gdist le &dist_limit3 is FALSE

SYMBOLGEN: Macro variable MBR_PED_IND resolves to Y

MLOGIC(RUNNER): %IF condition &mbr_ped_ind eq Y is TRUE

SYMBOLGEN: Macro variable GDIST resolves to 171.732

SYMBOLGEN: Macro variable DIST_LIMIT1 resolves to 10

MLOGIC(RUNNER): %IF condition &gdist le &dist_limit1 is FALSE

SYMBOLGEN: Macro variable GDIST resolves to 171.732

SYMBOLGEN: Macro variable DIST_LIMIT2 resolves to 20

MLOGIC(RUNNER): %IF condition &gdist le &dist_limit2 is TRUE

The first block worked fined. However, in the second block especially in the colored portion, the condition evaluates to TRUE instead of FALSE. Clearly 171.20 is NOT less than 20. Can someone help with what's going on here? Thanks.

Re: Macro resolution and %IF-%Then %Else statements

Punxsutawney — Thu, 13 Aug 2015 18:10:49 GMT

I figured it out myself. I only needed to put the condition inside the function %sysevalf. Thanks.

Re: Macro resolution and %IF-%Then %Else statements

VasilijNevlev — Fri, 14 Aug 2015 10:21:32 GMT

Hey Punxsutawney,

I think you can still close your question as answered, so it doesn't draw attention for others that might want to try and answer the question.

Regards,

Vasilij

Re: Macro resolution and %IF-%Then %Else statements

bentleyj1 — Fri, 14 Aug 2015 14:58:30 GMT

Glad you figured out a solution. It happened because macro variables are always character and '20' is greater than '171'. %sysevalf (and %syseval) tells the macro processor to handle them as numeric values.

(Just thought this explanation might be useful to others.)

John

Re: Macro resolution and %IF-%Then %Else statements

Punxsutawney — Fri, 14 Aug 2015 15:49:42 GMT

Thanks.