[comp.sys.mac.programmer] dead code, brain dead lil

Jim.Spencer@p5.f22.n282.z1.FIDONET.ORG (Jim Spencer) (02/20/90)

 >>The proper way to write atoi on the Macintosh is:
 >>int atoi(StringPtr s) { long i; StringToNum(s, &i); return i; }
 > ~~~                     ~~~~                        ~~~~~~~~
 >>Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com
 >
 >I can't believe this !
 >
 >Any sane compiler would complain. If you reurn a long, the
 >function should be declared long. If you use int, you're wide
 >open for all kinds of incompatibilities. Int is intended only
 >for holding "a small integer value", and you can never assume
 >it can take a value higher than 32767. (Look in the standard)
 
I don't have the ANSI standard but my understanding is that the length of an int is implementation dependantand an int can be equivalent to a long or a short.  In MPW C, an int is equivalent to a long, i.e. 32 bits capable of holding values from -2,147,483,648 to 2,147,483,647.  While the typing of C is much stronger under the ANSI standard, I still would prefer that the compiler only complain when sizes really don't match and the larger sized type is being assigned to the smaller.


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