This is a low-level function which will normally only be required if you are implementing your own memory allocation facilities.

The function accepts a C pointer which has previously been registered for use from both C and FORTRAN (using cnfRegp) and removes its registration. Subsequently, conversion between the C pointer and its FORTRAN equivalent (and vice versa) will no longer be performed by cnfFptr and cnfCptr.

cnfUregp( cpointer )

void $\ast$cpointer (Given)

• No action occurs (and no error results) if the C pointer has not previously been registered for use from both C and FORTRAN.