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".

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

• /home/hanna/Utveckling/libqalculate/libqalculate/includes.h