jerry-libm-internal 数学库文件，计算三角函数，开方运算等，极高精度

### About profile files Specify compile definitions in profile files to use when compiling the `jerry-core` target. The default profile is ``es5.1`` which disables the ES2015 features. ### Using profiles with the build system You can specify the profile for the build system in the following ways: * with absolute path * with a name (this options selects profiles/$(name).profile file) #### Restrictions Only single line options are allowed in the profile file. Any line starting with hash-mark is ignored. Semicolon character is not allowed. ### Example usage #### 1. Using the build script If you want to use a predefined profile, run the build script as follows (assuming that you are in the project root folder): ``` ./tools/build.py --profile=minimal ``` Alternatively, if you want to use a custom profile at `/absolute/path/to/my.profile`: ``` # Turn off every ES2015 feature EXCEPT the arrow functions CONFIG_DISABLE_ES2015_BUILTIN CONFIG_DISABLE_ES2015_CLASS CONFIG_DISABLE_ES2015_FUNCTION_PARAMETER_INITIALIZER CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER CONFIG_DISABLE_ES2015_MAP_BUILTIN CONFIG_DISABLE_ES2015_OBJECT_INITIALIZER CONFIG_DISABLE_ES2015_PROMISE_BUILTIN CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN CONFIG_DISABLE_ES2015_TEMPLATE_STRINGS CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN ``` Run the build script as follows (assuming that you are in the project root folder): ``` ./tools/build.py --profile=/absolute/path/to/my.profile ``` #### 2. Using only CMake build system Set FEATURE_PROFILE option to one of the following values: * the profile with absolute path * name of the profile (which needs to exist in the `profiles` folder) ### Configurations In JerryScript all of the features are enabled by default, so an empty profile file turns on all of the available ECMA features. * `CONFIG_DISABLE_ANNEXB_BUILTIN`: Disable the [Annex B](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-B) of the ECMA5.1 standard. * `CONFIG_DISABLE_ARRAY_BUILTIN`: Disable the [Array](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.4) built-in. * `CONFIG_DISABLE_BOOLEAN_BUILTIN`: Disable the [Boolean](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.6) built-in. * `CONFIG_DISABLE_DATE_BUILTIN`: Disable the [Date](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.9) built-in. * `CONFIG_DISABLE_ERROR_BUILTINS`: Disable the [Native Error Types](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.11.6) (EvalError, RangeError, ReferenceError, SyntaxError, TypeError, URIError). **Note**: The [Error](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.11.2) object remains available. * `CONFIG_DISABLE_JSON_BUILTIN`: Disable the [JSON](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.12) built-in. * `CONFIG_DISABLE_MATH_BUILTIN`: Disable the [Math](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.8) built-in. * `CONFIG_DISABLE_NUMBER_BUILTIN`: Disable the [Number](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.7) built-in. * `CONFIG_DISABLE_REGEXP_BUILTIN`: Disable the [RegExp](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.10) built-in. * `CONFIG_DISABLE_STRING_BUILTIN`: Disable the [String](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15.5) built-in. * `CONFIG_DISABLE_BUILTINS`: Disable all of the [Standard Built-in ECMAScript 5.1 Objects](http://www.ecma-international.org/ecma-262/5.1/index.html#sec-15) (equivalent to `CONFIG_DISABLE_ANNEXB_BUILTIN`, `CONFIG_DISABLE_ARRAY_BUILTIN`, `CONFIG_DISABLE_BOOLEAN_BUILTIN`, `CONFIG_DISABLE_DATE_BUILTIN`, `CONFIG_DISABLE_ERROR_BUILTINS`, `CONFIG_DISABLE_JSON_BUILTIN`, `CONFIG_DISABLE_MATH_BUILTIN`, `CONFIG_DISABLE_NUMBER_BUILTIN`, `CONFIG_DISABLE_REGEXP_BUILTIN`, and `CONFIG_DISABLE_STRING_BUILTIN`). * `CONFIG_DISABLE_ES2015_ARROW_FUNCTION`: Disable the [arrow functions](http://www.ecma-international.org/ecma-262/6.0/#sec-arrow-function-definitions). * `CONFIG_DISABLE_ES2015_BUILTIN`: Disable the built-in updates of the 5.1 standard. There are some differences in those built-ins which available in both [5.1](http://www.ecma-international.org/ecma-262/5.1/) and [2015](http://www.ecma-international.org/ecma-262/6.0/) versions of the standard. JerryScript uses the latest definition by default. * `CONFIG_DISABLE_ES2015_CLASS`: Disable the [class](https://www.ecma-international.org/ecma-262/6.0/#sec-class-definitions) language element. * `CONFIG_DISABLE_ES2015_FUNCTION_PARAMETER_INITIALIZER`: Disable the [default value](http://www.ecma-international.org/ecma-262/6.0/#sec-function-definitions) for formal parameters. * `CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER`: Disable the [rest parameter](http://www.ecma-international.org/ecma-262/6.0/#sec-function-definitions). * `CONFIG_DISABLE_ES2015_MAP_BUILTIN`: Disable the [Map](http://www.ecma-international.org/ecma-262/6.0/#sec-keyed-collection) built-ins. * `CONFIG_DISABLE_ES2015_OBJECT_INITIALIZER`: Disable the [enhanced object initializer](http://www.ecma-international.org/ecma-262/6.0/#sec-object-initializer) language element. * `CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN`: Disable the [Symbol](https://www.ecma-international.org/ecma-262/6.0/#sec-symbol-objects) built-in. * `CONFIG_DISABLE_ES2015_PROMISE_BUILTIN`: Disable the [Promise](http://www.ecma-international.org/ecma-262/6.0/#sec-promise-objects) built-in. * `CONFIG_DISABLE_ES2015_TEMPLATE_STRINGS`: Disable the [template strings](http://www.ecma-international.org/ecma-262/6.0/#sec-static-semantics-templatestrings). * `CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN`: Disable the [ArrayBuffer](http://www.ecma-international.org/ecma-262/6.0/#sec-arraybuffer-objects) and [TypedArray](http://www.ecma-international.org/ecma-262/6.0/#sec-typedarray-objects) built-ins. * `CONFIG_DISABLE_ES2015`: Disable all of the implemented [ECMAScript2015 features](http://www.ecma-international.org/ecma-262/6.0/). (equivalent to `CONFIG_DISABLE_ES2015_ARROW_FUNCTION`, `CONFIG_DISABLE_ES2015_BUILTIN`, `CONFIG_DISABLE_ES2015_CLASS`, `CONFIG_DISABLE_ES2015_FUNCTION_PARAMETER_INITIALIZER`, `CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER`, `CONFIG_DISABLE_ES2015_MAP_BUILTIN`, `CONFIG_DISABLE_ES2015_OBJECT_INITIALIZER`, `CONFIG_DISABLE_ES2015_SYMBOL_BUILTIN`, `CONFIG_DISABLE_ES2015_PROMISE_BUILTIN`, `CONFIG_DISABLE_ES2015_TEMPLATE_STRINGS`, and `CONFIG_DISABLE_ES2015_TYPEDARRAY_BUILTIN`).