xfygogo
/
exprtk
mirror of https://github.com/ArashPartow/exprtk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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

This commit is contained in:
ArashPartow 2019-01-01 04:18:33 +11:00
parent b3b4cee1c5
commit e0e880c379
25 changed files with 890 additions and 406 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
.travis.yml
View File

@ -1,12 +1,20 @@
dist: xenial
language: cpp
sudo: required
dist: trusty
compiler:
- gcc
addons:
apt:
sources:
- ubuntu-toolchain-r-test
packages:
- gcc-7
- g++-7
script:
- make clean all
- export CC=gcc-7
- export CXX=g++-7
- make clean
- make all -j 4
- ./exprtk_test

4
Makefile
View File

@ -2,7 +2,7 @@
# **************************************************************
# * C++ Mathematical Expression Toolkit Library *
# * *
# * Author: Arash Partow (1999-2018) *
# * Author: Arash Partow (1999-2019) *
# * URL: http://www.partow.net/programming/exprtk/index.html *
# * *
# * Copyright notice: *
@ -16,7 +16,7 @@
COMPILER := -c++
#COMPILER := -clang
#COMPILER := -clang++
OPTIMIZATION_OPT := -O1
BASE_OPTIONS := -pedantic-errors -Wall -Wextra -Werror -Wno-long-long
OPTIONS := $(BASE_OPTIONS) $(OPTIMIZATION_OPT)

1059
exprtk.hpp
View File

File diff suppressed because it is too large Load Diff

2
exprtk_benchmark.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* ExprTk vs Native Benchmarks *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_01.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 1 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_02.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 2 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_03.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 3 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_04.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 4 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_05.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 5 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_06.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 6 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_07.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 7 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_08.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 8 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_09.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 9 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_10.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 10 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_11.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 11 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_12.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 12 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_13.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 13 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_14.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 14 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_15.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 15 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_16.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 16 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_17.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 17 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_18.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 18 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

2
exprtk_simple_example_19.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Simple Example 19 *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *

102
exprtk_test.cpp
View File

@ -3,7 +3,7 @@
* C++ Mathematical Expression Toolkit Library *
* *
* Examples and Unit-Tests *
* Author: Arash Partow (1999-2018) *
* Author: Arash Partow (1999-2019) *
* URL: http://www.partow.net/programming/exprtk/index.html *
* *
* Copyright notice: *
@ -2674,6 +2674,10 @@ inline bool run_test02()
template <typename T>
inline bool run_test03()
{
typedef exprtk::symbol_table<T> symbol_table_t;
typedef exprtk::expression<T> expression_t;
typedef exprtk::parser<T> parser_t;
std::string expression_string = "A+A0+aA+Aa0+b+B1+Bb+bB1+A+A0+AA+AA0+B+B1+BB+BB1+a+a0+aa+aa0+b+b1+bb+bb1+"
"c+C2+Cc+Cc2+D+D3+dD+dD3+C+C2+CC+CC2+D+D3+DD+DD3+c+c2+cc+cc2+d+d3+dd+dd3+"
"E+E4+eE+Ee4+f+F5+Ff+fF5+E+E4+EE+EE4+F+F5+FF+FF5+e+e4+ee+ee4+f+f5+ff+ff5+"
@ -2711,9 +2715,9 @@ inline bool run_test03()
for (std::size_t r = 0; r < rounds; ++r)
{
exprtk::symbol_table<T> symbol_table_0;
exprtk::symbol_table<T> symbol_table_1;
exprtk::expression<T> expression;
symbol_table_t symbol_table_0;
symbol_table_t symbol_table_1;
expression_t expression;
std::vector<T> v;
v.resize(variable_list_size);
@ -2812,7 +2816,7 @@ inline bool run_test03()
"1 v y",
"x v 1",
"y v 1",
"(x == 'a string' )",
"(x == 'a string'[1:2] )",
"(x == 'a string' + 'b string' )",
@ -2820,7 +2824,22 @@ inline bool run_test03()
"('a string' == x )",
"('a string'[1:2] == x )",
"('a string' + 'b string' == x )",
"(('a string' + 'b string')[3:5] == x)"
"(('a string' + 'b string')[3:5] == x)",
"var a; var b; 3in(a)+sin(b) ",
"var a; var b; sin(a)+3in(b) ",
"var a; var b; sqrt(a)<3in(8) ",
"var a; var b; (1.99-3in((b-b))) ",
"var a; var b; ((3in(sin((b+b)))/1.06)-a) ",
"var a; var b; ((sin(3in((b+b)))/1.06)-a) ",
"var a; var b; (3in(x*(y+z))+cos(x*(y-z))) ",
"var a; var b; (cos(x*(y+z))+3in(x*(y-z))) ",
"1++++",
"1+-+-+",
"1===",
"1====",
"[*][*][*][*][*]"
};
const std::size_t invalid_expr_size = sizeof(invalid_expr) / sizeof(std::string);
@ -2828,9 +2847,9 @@ inline bool run_test03()
{
for (std::size_t i = 0; i < invalid_expr_size; ++i)
{
exprtk::symbol_table<T> symbol_table;
exprtk::expression<T> expression;
symbol_table_t symbol_table;
expression_t expression;
parser_t parser;
T x = T(0);
std::string s;
@ -2840,8 +2859,6 @@ inline bool run_test03()
symbol_table.add_stringvar("s",s);
symbol_table.add_vector ("v",v);
exprtk::parser<T> parser;
if (parser.compile(invalid_expr[i],expression))
{
printf("run_test03() - Error: [1] Invalid expression compiled successfuly. Expression: %s\n",
@ -2857,14 +2874,13 @@ inline bool run_test03()
std::string s;
std::vector<T> v(10, T(1.234));
exprtk::symbol_table<T> symbol_table;
symbol_table_t symbol_table;
parser_t parser;
symbol_table.add_variable ("x",x);
symbol_table.add_stringvar("s",s);
symbol_table.add_vector ("v",v);
exprtk::parser<T> parser;
for (std::size_t i = 0; i < invalid_expr_size; ++i)
{
exprtk::expression<T> expression;
@ -2878,6 +2894,64 @@ inline bool run_test03()
}
}
}
{
const std::string base_expression =
"1+(2+2(3+3(4+4cos(((((a+((x*(e-tan((cos((((((b/(tan(((1.60*a)-0.34))-0.76))-x)+y)-3.27)+a))/pi))))^a))+y)*b)-e))+e)/z)+w)+"
"(((b+(a/((((tan((b*((((((a-(cos((cos(tan(((a+a)*3.33)))-b))/2.52))*x)/b)+3.07)^0.86)+b)))*3.95)/0.39)*y)+a)))*a)*z)";
const std::string mod =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789^+-/*,;:<>=%?[]{}() #&'\"\\\t\r\n";
symbol_table_t symbol_table;
expression_t expression;
parser_t parser;
T a = T(1.1 );
T b = T(2.2 );
T c = T(3.3 );
T d = T(4.5 );
T e = T(4.5 );
T x = T(2.123456);
T y = T(3.123456);
T z = T(4.123456);
T w = T(5.123456);
symbol_table.add_variable("a", a);
symbol_table.add_variable("b", b);
symbol_table.add_variable("c", c);
symbol_table.add_variable("d", d);
symbol_table.add_variable("e", e);
symbol_table.add_variable("x", x);
symbol_table.add_variable("y", y);
symbol_table.add_variable("z", z);
symbol_table.add_variable("w", w);
expression.register_symbol_table(symbol_table);
T total = T(0);
for (std::size_t j = 0; j < base_expression.size(); ++j)
{
std::string expression_str = base_expression;
const char old_c = base_expression[j];
for (std::size_t i = 0; i < mod.size(); ++i)
{
expression_str[j] = mod[i];
if (parser.compile(expression_str, expression))
{
total += expression.value();
}
}
expression_str[j] = old_c;
}
if (total == T(12345.6789)) { printf(" "); }
}
}
return true;

73
readme.txt
View File

@ -706,6 +706,61 @@ This allows for the original element to be modified independently of
the expression instance and to also allow the expression to be
evaluated using the current value of the element.
Note: Any variable reference provided to a given symbol_table
instance, must have a life time at least as long as the life-time of
the symbol_table instance. In the event the variable reference is
invalidated before the symbol_table or any dependent expression
instances have been destructed, then any associated expression
evaluations or variable referencing via the symbol_table instance will
result in undefined behaviour.
The following bit of code instantiates a symbol_table and expression
instance, then proceeds to demonstrate various ways in which
references to variables can be added to the symbol_table, and how
those references are subsequently invalidated resulting in various
forms of undefined behaviour.
typedef exprtk::symbol_table<double> symbol_table_t;
symbol_table_t symbol_table;
expression_t expression;
{
double x = 123.4567;
symbol_table.add_variable("x", x);
} // Reference to variable x has been invalidated
std::deque<double> y {1.1, 2.2, 3.3};
symbol_table.add_variable("y", y.back());
y.pop_back(); // Reference to variable y has been invalidated
std::vector<double> z {4.4, 5.5, 6.6};
symbol_table.add_variable("z", z.front());
z.erase(z.begin());
// Reference to variable z has been invalidated
double* w = new double(123.456);
symbol_table.add_variable("w", *w);
delete w; // Reference to variable w has been invalidated
const std::string expression_str = "x + y / z * w";
// Compilation of expression will succeed
parser.compile(expression_str,expression);
expression.value();
// Evaluation will result in undefined behaviour
symbol_table.get_variable("x")->ref() = 135.791;
// Assignment will result in undefined behaviour
The example below demonstrates the relationship between variables,
symbol_table and expression. Note the variables are modified as they
normally would in a program, and when the expression is evaluated the
@ -2999,6 +3054,24 @@ constructor of the user defined USR.
Note: The primary symbol table for an expression is the first symbol
table to be registered with that instance of the expression.
Note: For a successful symbol resolution using the normal USR all of
the following are required:
(1) Only if successful shall the process method return TRUE
(2) The default_value parameter will have been set
(3) The error_message parameter will be empty
(4) usr_symbol_type input parameter field will be set to either:
(*) e_usr_variable_type
(*) e_usr_constant_type
Note: For a successful symbol resolution using the extended USR all of
the following are required:
(1) Only if successful shall the process method return TRUE
(2) symbol_table parameter will have had the newly resolved
variable or string added to it
(3) error_message parameter will be empty
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[SECTION 19 - ENABLING & DISABLING FEATURES]