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Date: 13 Mar 88 02:03:40 GMT
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Subject:  Re: The D Programming Language

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From:         Scott Daniels <daniels@teklds.TEK.COM>
Subject:      Re: The D Programming Language
Comments: To: info-c@BRL-SMOKE.arpa
To:           Vic Kapella <SXJVK@ALASKA>

In article <587@bms-at.UUCP> stuart@bms-at.UUCP (Stuart D. Gathman) writes:
>Another example is string comparison.  I use a string compare function
>that returns the index of the first different character.  I also
>need the gt/lt/eq result.  Fortunately, in this case it is easily
>computed by recomparing the chars at the index.

An alternative is the string comparison I normally use:

    cmpstr(s1,s2)
0: if equal
>0: if s1 > s2
<0: if s1 < s2

abs(cmpstr(s1,s2)) is the number of chars compared:
  s1[ abs(cmpstr(s1,s2))-1 ] != s2[ abs(cmpstr(s1,s2))-1 ]
  if cmpstr did not return 0.  Normally this function returns just
  about any information I need, and it is usually not very hard to
  make an extremely fast version in assembly.

-Scott Daniels (daniels@teklds.TEK.COM)