get i-th child \param i child index

return the incident inverse ior ratio

get node count

Compress len zeros to output. Return -1 on a write error or memory allocation failure by gz_comp(), or 0 on success. */

2d Gaussian distribution with fully prescribed covariance matrix

Returns the working directory when the first TEST() or TEST_F() was executed.

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

utility function for [0,1) randoms

set the i-th component \param i component index

return the microfacet normal for a given pair of incident and outgoing direction vectors

Helper method for wrapping a color (rgba).<p> Used by JNI, do not modify! @param red red component @param green green component @param blue blue com

------------------------------------------------------------------------------------------------

Start a named timer */

Starts capturing stdout.

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

------------------------------------------------------------------------------- @brief Perform a component-wise comparison of two arrays * * @param

-------------------------------------------------------------------------------

----------------------------------------------------------------------------------- Convert a name to standard XML format

----------------------------------------------------------------------------------- Convert a name to standard XML format

------------------------------------------------------------------------------- Delete the loaded asset The function does nothing is no asset is loade

Removes the head of the queue and returns it. Returns NULL if the queue is empty.

A unary function that may die.

------------------------------------------------------------------------------- Let the user choose a color in a windows standard color dialog -------

\em Past-the-end element iterator ! \pre IsArray() == true */

End a specific named timer and write its end time to the log */

Find member by name. ! \param name Member name to be searched. \pre IsObject() == true \return Iterator to member, if it exist

Converts the given epoch time in milliseconds to a date string in the ISO 8601 format, without the timezone information.

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

------------------------------------------------------------------ get the primary color of the checker pattern background

Get the number of UV channels the mesh contains

------------------------------------------------------------------ get the secondary color of the checker pattern background

Returns the number of active threads, or 0 when there is an error.

-----------------------------------------

Returns whether the given character is a valid path separator.

------------------------------------------------------------------------------------------------

Sets the env variable to 'value'; unsets it when 'value' is None.

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

Verifies correct behavior when help flag is specified. The right message must be printed and the tests must skipped when the given flag is sp

-------------------------------------------------------------------------------------------- Converts the bit pattern of a floating-point number to it

Verifies that registered_tests match the test names in registered_tests_; returns registered_tests if successful, or aborts the program otherwise.

apply the radiance compression factor of (eta_t / eta_i)^2

=========================================================================== * Fill the window when the lookahead becomes insufficient. * Updates str