When compiling a program that always requires the use of a particular format of floating point data items, you use the NATIVE-FLOATING-POINT directive. Setting NATIVE-FLOATING-POINT specifies that IEEE format floating point data items are used, regardless of the setting of the MAINFRAME_FLOATING_POINT environment variable. Setting NONATIVE-FLOATING-POINT causes the floating point format to be determined by the MAINFRAME_FLOATING_POINT environment variable.
See the section Running for information on the MAINFRAME_FLOATING_POINT environment variable and NATIVE-FLOATING-POINT for more information on the NATIVE-FLOATING-POINT Compiler directive.