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C++ Mathematical Expression Library (ExprTk) http://www.partow.net/programming/exprtk/index.html

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Arash Partow 2014-10-21 06:11:38 +11:00
parent 0e5362ff8a
commit e8cf66e55e
2 changed files with 238 additions and 107 deletions
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253
exprtk.hpp
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16
readme.txt
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@ -1238,7 +1238,21 @@ into account when using Exprtk:
2. # .... \n 2. # .... \n
3. /* .... */ 3. /* .... */
(26) Every ExprTk statement is a "value returning" expression. Unlike (26) The 'null' value type is a special non-zero type that
incorporates specific semantics when undergoing operations
with the standard numeric type. The following is a list of
type and boolean results associated with the use of 'null':
1. null +,-,*,/,% x --> x
2. x +,-,*,/,% null --> x
3. null +,-,*,/,% null --> null
4. null == null --> true
5. null == x --> true
6. x == null --> true
7. x != null --> false
8. null != null --> false
9. null != x --> false
(27) Every ExprTk statement is a "value returning" expression. Unlike
some languages that limit the types of expressions that can be some languages that limit the types of expressions that can be
performed in certain situations, in ExprTk any valid expression performed in certain situations, in ExprTk any valid expression
can be used in any "value consuming" context. Eg: can be used in any "value consuming" context. Eg: