Returns true iff this is NAN (not a number).

Provides access to the event listener list.

\internal */

Returns the current OS stack trace getter if it is not NULL; otherwise, creates an OsStackTraceGetter, makes it the current getter, and returns it.

Swaps two AssertionResults.

Chops off the n lowest bits from a bit pattern. Returns the n lowest bits. As a side effect, the original bit pattern will be shifted to the right b

Helper function used by ValidateRegex() to format error messages.

Returns the i-th test among all the tests. i can range from 0 to total_test_count() - 1. If i is not in that range, returns NULL.

Gets the i-th test suite among all the test suites. i can range from 0 to total_test_suite_count() - 1. If i is not in that range, returns NULL.

Returns true iff ch appears anywhere in str (excluding the terminating '\0' character).

Returns whether the given character is a valid path separator.

The first group with one or more elements. Calling this when there are no groups with non-zero elements will result in a crash.

If *pstr starts with the given prefix, modifies *pstr to be right past the prefix and returns true; otherwise leaves *pstr unchanged and returns false

Returns true iff the test was skipped.

Reads and returns the string environment variable corresponding to the given flag; if it's not set, returns default_value.