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Annotation of coherent/d/bin/bc/Changes, revision 1.1.1.1

1.1       root        1: /usr/src/cmd/bc/Changes 1/29/90
                      2: 
                      3: Tue Jan 30 09:01:56 1990 PST
                      4: getnum.c
                      5:                The bc lexer requires a number to start with a digit.
                      6:                It formerly recognized leading "0" and "0x" as escapes.
                      7:                But if ibase > 10 and the leading digit of a number is
                      8:                alphabetic (e.g. hex "A000"), a leading "0" is required
                      9:                and ambiguity about the base results (octal?).
                     10:                Similarly, if ibase > 33, leading "0x" is ambiguous (hex?).
                     11:                rec (I think) ripped out the leading "0" and "0x" code
                     12:                to avoid this ambiguity.  Since I find hex escapes very
                     13:                convenient while leaving the default ibase==10
                     14:                (just type "0x1234" to see its decimal value),  I
                     15:                changed getnum() to recognize C escapes "0" and "0x"
                     16:                as prefixes for octal and hex numbers if ibase<=10.
                     17: 
                     18:                

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