| hb_deinstallMathHandler() | remove custom math handler from the math error handler chain |
| hb_getMathError() | get the last math lib error |
| hb_getMathHandlerStatus() | get the status of a custom math handler in the math error handler chain |
| hb_installMathHandler() | add a custom math handler to the math error handler chain |
| hb_isMathHandler() | check if harbour math error handler is available |
| hb_resetMathError() | reset the math error, i.e. set it to 0 |
| hb_setMathHandlerStatus() | set the status of a custom math handler in the math error handler chain |