3.4.46 –iorounding[={compatible|processor-defined}]

Set floating-point rounding mode for formatted input/output.

Sets the ROUND= specifier globally for all formatted input/output operations.

With -iorounding=compatible, the value resulting from data conversion is the one closer to the two nearest representations, or the value away from zero if the value is halfway between them.

With -iorounding=processor-defined, the rounding mode is the processor’s default mode. This is the default when -iorounding is not specified.