On Mon, Aug 19, 2013 at 8:03 PM, Glenn Fowler <g...@research.att.com> wrote:
> On Mon, 19 Aug 2013 15:57:15 +0200 Tina Harriott wrote:
>> The concept of bool b; (( b.true )) reminds me of java, python and
>> other programming languages which tie limits and constants to a
>> specific type instead of littering the global namespace with the
>> definitions (like C).
>
>> Could the numeric types, i.e. typeset -i/-E have a similar
>> functionality like b.true to access the minimum, maximum, epsilon, ...
>> values?
>
>> For example:
>
>> typeset -lE i; (( i.MIN )) would be the equivalent to C's LDBL_MIN
>> typeset -lE i; (( i.MAX )) would be the equivalent to C's LDBL_MAX
>> typeset -lE i; (( i.EPSILON )) would be the equivalent to C's LDBL_EPSILON
>> typeset -lE i; (( i.MAX_10_EXP )) would be the equivalent to C's
>> LDBL_MAX_10_EXP
>> typeset -sE i; (( i.MIN )) would be the equivalent to C's FLT_MIN
>> typeset -sE i; (( i.MAX )) would be the equivalent to C's FLT_MAX
>> typeset -sE i; (( i.EPSILON )) would be the equivalent to C's FLT_EPSILON
>> typeset -sE i; (( i.MAX_10_EXP )) would be the equivalent to C's
>> FLT_MAX_10_EXP
>
> for { FLT INT UINT } could you list the possible names
> e.g., ast_float.h currently misses FLT_EPSILON
See http://lists.research.att.com/pipermail/ast-developers/2013q3/003198.html
... it has a prototype patch which works with $(( var.CONST )) and
${var.CONST} and has the list of constants which should be defined by
default.
----
Bye,
Roland
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