A set of predicates and assertions for checking the properties of numbers. This is mainly for use by other package developers who want to include run-time testing features in their own packages. End-users will usually want to use assertive directly.

A set of predicates and assertions for checking the properties of numbers. Most of the documentation is on the *assertive* page. End-users will usually want to use *assertive* directly.

To install the stable version, type:

`install.packages("assertive.numbers")`

To install the development version, you first need the *devtools* package.

`install.packages("devtools")`

Then you can install the *assertive.numbers* package using

`library(devtools)install_bitbucket("richierocks/assertive.numbers")`

`is_even`

and `is_odd`

check for even or odd numbers. `is_divisible_by`

generalizes the concept.

`is_finite`

, `is_infinite`

, `is_negative_infinity`

, and `is_positive_infinity`

check for infiniteness.

`is_nan`

and `is_not_nan`

check for `NaN`

(or not).

`is_in_range`

checks for numbers in a range. `is_in_closed_range`

, `is_in_open_range`

, `is_in_left_open_range`

, `is_in_right_open_range`

, `is_negative`

, `is_non_negative`

, `is_positive`

, `is_non_positive`

, `is_percentage`

, and `is_proportion`

provide more specialized alternatives.

`is_imaginary`

and `is_real`

check for imaginary or real numbers.

`is_whole_number`

check for whole numbers.

`is_equal_to`

, `is_not_equal_to`

, `is_greater_than`

, `is_greater_than_or_equal_to`

, `is_less_than`

, and `is_less_than_or_equal_to`

check relational operators.

Predicates all return a vector and have two corresponding assertions. For example, `is_even`

has `assert_all_are_even`

and `assert_any_are_even`

.

0.0-2 Better error msgs for is_equal_to & its friends. Removed devtools dependency. 0.0-1 Content extracted from assertive 0.3-0, and tidied.