Sets the initial size of an internal library storage subpool acquired below the 16M line. The default below the line subpool storage size is 4K When _EDC_STOR_INITIAL_B is set, its value string is translated to the decimal integer equivalent. This integer is then used as the new setting of the above the line subpool storage initial size. The setting of this environment variable is only effective if it is done before the first I/O in the enclave.
setenv("_EDC_STOR_INITIAL_B","1000",1);
Internally, the storage subpool acquired from 24-bit storage will be set to 4096 (that is, 4K). However, the subsequent call getenv("_EDC_STOR_INITIAL_B"); returns "1000", as set by the setenv() call.