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decuslib10-05
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43,50337/23/checkr.mac
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COMMENT * SIMULA specification;
OPTIONS(/E:CODE,checkreal);
INTEGER PROCEDURE checkreal(t); NAME t; TEXT t;
COMMENT CHECKREAL analyses the text t from t.pos and on.
If a getreal operation from this position is legal the
returned value is +1. If it would give an error - then
if the remaining text string is blank, the result is 0,
else -1. Pos is placed after a legal item (+1),
after the first nonblank illegal character (-1) or after
the text if the rest is empty (0).
;
!*;! MACRO-10 code !*;!
TITLE checkreal
ENTRY checkreal
SUBTTL SIMULA utility, Lars Enderin Dec 1975
;!*** Copyright 1975 by the Swedish Defence Research Institute. ***
;!*** Copying is allowed. ***
sall
search simmac,simmcr,simrpa
macinit
EXTERN .check
;! Local definitions ;!
result==ZBI%S
t==result+1
checkreal: PROC
LI XTAC,TXGR
BRANCH .check
EPROC
LIT
END;