ParseOptions Struct Reference

Options for parsing expressions. More...

`#include <includes.h>`

## Public Attributes

bool | variables_enabled
| If variables will be parsed. Default: true.
bool | functions_enabled
| If functions will be parsed. Default: true.
bool | unknowns_enabled
| If left-over characters will be parsed as symbols. Default: true.
bool | units_enabled
| If units will be parsed. Default: true.
bool | rpn
| If Reverse Polish Notation syntax will be used. Default: false (deprecated, use parsing_mode = PARSING_MODE_RPN instead)
int | base
| Base of parsed numbers. Specify a value between 2 and 36 or use one of the special values defined in includes.h (BASE_*). Default: 10.
bool | limit_implicit_multiplication
| When implicit multiplication is limited variables, functions and units must be separated by a space, operator or parenthesis ("xy" does not equal "x * y"). Default: false.
ReadPrecisionMode | read_precision
| If and when precisions will be read from number of digits in a number. Default: DONT_READ_PRECISION.
bool | dot_as_separator
| If true dots will ignored if another character is the default decimal sign, to allow dots to be used as thousand separator. Default: false.
bool | comma_as_separator
| If true commas will ignored if another character is the default decimal sign, to allow commas to be used as thousand separator. You should also call CALCULATOR->useDecimalPoint(true). Default: false.
bool | brackets_as_parentheses
| Interpret square brackets equally to parentheses (not only for vectors/matrices). Default; false.
AngleUnit | angle_unit
| Default angle unit for trigonometric functions. Default: ANGLE_UNIT_NONE.
MathStructure * | unended_function
| If non-NULL will be set to unfinished function at the end of the expression (if there is one). Default: NULL.
bool | preserve_format
| Preserve the expression structure as much as possible. Default: false.
DataSet * | default_dataset
| Default dataset. Used for object.property syntax without a preceding data set. Default: NULL.
ParsingMode | parsing_mode
| Parsing mode. Default: PARSING_MODE_ADAPTIVE.
bool | twos_complement
| Negative binary numbers uses two's complement representation. All binary numbers starting with 1 are assumed to be negative, unless binary_bits is set. Default: false.
bool | hexadecimal_twos_complement
| Negative hexadecimal numbers uses two's complement representation. All hexadecimal numbers starting with 8 or higher are assumed to be negative, unless binary_bits is set. Default: false.
unsigned int | binary_bits
| Number of bits used for binary and hexadecimal numbers. Set to 0 for automatic. Default: 0.

## Detailed Description

Options for parsing expressions.

## Member Data Documentation

## limit_implicit_multiplication

bool ParseOptions::limit_implicit_multiplication

When implicit multiplication is limited variables, functions and units must be separated by a space, operator or parenthesis ("xy" does not equal "x * y"). Default: false.

If the limit implicit multiplication mode is activated, the use of implicit multiplication when parsing expressions and displaying results will be limited to avoid confusion. For example, if this mode is not activated and "integrte(5x)" is accidently typed instead of "integrate(5x)", the expression is interpreted as "int(e * e * (5 * x) * gr * t)". If limit implicit multiplication is turned on to mistyped expression would instead show an error telling that "integrte" is not a valid variable, function or unit (unless unknowns is not enabled in which case the result will be "5 'integrate' * x".

The documentation for this struct was generated from the following file:

- /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_libqalculate/libqalculate/work/libqalculate-5.4.0/libqalculate/includes.h