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

This commit is contained in:
Arash Partow 2014-12-26 06:31:45 +11:00
parent 371d28c3a8
commit e0bbb336dd
2 changed files with 44 additions and 17 deletions
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28
exprtk_test.cpp
View File

@ -5058,7 +5058,6 @@ inline bool run_test18()
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x,x);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x,x);",
@ -5071,7 +5070,18 @@ inline bool run_test18()
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0,v0);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0,v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0,v0,v0);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0,v0,v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x,x);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(x,x,x,x);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(s0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(s0,s0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(s0,s0,s0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(s0,s0,s0,s0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0,v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v0,v0,v0);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);",
"var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);", "var z := 3; var w[3] := { 1/3, 1/5, 1/7 }; foo(v0,v1 + v2, v0[2], x, 2x + y, z, 2w / 3, 'abc123',s0[2:5]);",
@ -5096,7 +5106,6 @@ inline bool run_test18()
"V*TTTTVSS", "V*TTTTVSS",
"VVT*VSS" , "VVT*VSS" ,
"VVTTTTVS*", "VVTTTTVS*",
"T*", "T*",
"T*", "T*",
"T*", "T*",
@ -5109,7 +5118,18 @@ inline bool run_test18()
"V*", "V*",
"V*", "V*",
"V*", "V*",
"T",
"TT",
"TTT",
"TTTT",
"S",
"SS",
"SSS",
"SSSS",
"V",
"VV",
"VVV",
"VVVV",
"TTTTTTT|STSTSTS|V*T*VS*" , "TTTTTTT|STSTSTS|V*T*VS*" ,
"TTTTTTT|STSTSTS|V*TTTTVSS", "TTTTTTT|STSTSTS|V*TTTTVSS",
"TTTTTTT|STSTSTS|VVT*VSS" , "TTTTTTT|STSTSTS|VVT*VSS" ,

33
readme.txt
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@ -1404,11 +1404,12 @@ parameters in the following sequence:
A final piece of type checking functionality is available for the A final piece of type checking functionality is available for the
scenarios where a single function name is intended to be used for scenarios where a single function name is intended to be used for
multiple distinct parameter sequences. The parameter sequences are multiple distinct parameter sequences, another name for this feature
passed to the constructor as a single string delimited by the pipe '|' is function overloading. The parameter sequences are passed to the
character. Two specific overrides of the function operator are constructor as a single string delimited by the pipe '|' character.
provided one for standard generic functions and one for string Two specific overrides of the function operator are provided one for
returning functions. The overrides are as follows: standard generic functions and one for string returning functions. The
overrides are as follows:
// f(psi,i_0,i_1,....,i_N) --> Scalar // f(psi,i_0,i_1,....,i_N) --> Scalar
inline T operator()(const std::size_t& ps_index, inline T operator()(const std::size_t& ps_index,
@ -1918,7 +1919,13 @@ into account when using Exprtk:
be to recompile an expression from its string form every time be to recompile an expression from its string form every time
it requires evaluating. it requires evaluating.
(24) The following are examples of compliant floating point value (24) Where appropriate the return values of method invocations from
the parser and symbol_table should be taken into account.
Specifically the 'compile' method of the parser and the
'add_xxx' set of methods of the symbol table as they denote
success or failure of the invoked call.
(25) The following are examples of compliant floating point value
representations: representations:
(a) 12345 (e) -123.456 (a) 12345 (e) -123.456
@ -1926,13 +1933,13 @@ into account when using Exprtk:
(c) +012.045e+07 (g) .1234 (c) +012.045e+07 (g) .1234
(d) 123.456f (h) -321.654E+3L (d) 123.456f (h) -321.654E+3L
(25) Expressions may contain any of the following comment styles: (26) Expressions may contain any of the following comment styles:
1. // .... \n 1. // .... \n
2. # .... \n 2. # .... \n
3. /* .... */ 3. /* .... */
(26) The 'null' value type is a special non-zero type that (27) The 'null' value type is a special non-zero type that
incorporates specific semantics when undergoing operations with incorporates specific semantics when undergoing operations with
the standard numeric type. The following is a list of type and the standard numeric type. The following is a list of type and
boolean results associated with the use of 'null': boolean results associated with the use of 'null':
@ -1947,7 +1954,7 @@ into account when using Exprtk:
8. null != null --> false 8. null != null --> false
9. null != x --> false 9. null != x --> false
(27) The following is a list of reserved words and symbols used by (28) The following is a list of reserved words and symbols used by
ExprTk. Attempting to add a variable or custom function to a ExprTk. Attempting to add a variable or custom function to a
symbol table using any of the reserved words will result in a symbol table using any of the reserved words will result in a
failure. failure.
@ -1963,7 +1970,7 @@ into account when using Exprtk:
sum, swap, switch, tanh, tan, true, trunc, until, var, sum, swap, switch, tanh, tan, true, trunc, until, var,
while, xnor, xor, xor while, xnor, xor, xor
(28) Every valid ExprTk statement is a "value returning" expression. (29) Every valid ExprTk statement is a "value returning" expression.
Unlike some languages that limit the types of expressions that Unlike some languages that limit the types of expressions that
can be performed in certain situations, in ExprTk any valid can be performed in certain situations, in ExprTk any valid
expression can be used in any "value consuming" context. eg: expression can be used in any "value consuming" context. eg:
@ -1971,9 +1978,9 @@ into account when using Exprtk:
var y := 3; var y := 3;
for (var x := switch for (var x := switch
{ {
case 1 : 7; case 1 : 7;
case 2 : -1 + ~{var x{};}; case 2 : -1 + ~{var x{};};
default: y > 2 ? 3 : 4; default : y > 2 ? 3 : 4;
}; };
x != while (y > 0) { y -= 1; }; x != while (y > 0) { y -= 1; };
x -= {if(min(x,y) < 2 * max(x,y)) x -= {if(min(x,y) < 2 * max(x,y))