IBM 1130 User Manual page 562

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High/Low/Equal Alpha Compare. Everything said

about the Match/No Match compare also applies

here, with two exceptions:

The fields to be compared should always be

in Al format.

The Al representation for a blank must be

you want it to fall in the proper

collating sequence.

Figure 70. 31 shows the decimal representation of

various characters in Al format. Note that the

blank falls after the letters and numbers. If it is

left there, alphabetic compares will yield an ascending

sequence--for example:

Figure 70.31.

<(less than)

, (apostrophe)

rather than the correct

This can easily be corrected

converted from 16448 to something less than

-16064, the letter A. In fact, you might as well

change it to -16448. With a DO loop, the input

record can be scanned for + 16448s, and each one

found can be changed to -16448.

They need not be converted back to +16448 for

printed output, since any invalid character (such

as -16448) will be printed as a blank anyway.

punched output, however, this will not be so, and

the -164488 should be changed back to +16448s.

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