keyword

    The OpenVMS I64 Linker accepts the following keywords to set the
    floating point mode:

    Keyword                Description

    D_FLOAT, G_FLOAT       Sets VAX floating point modes.
    IEEE_FLOAT[=ieee_      Sets the IEEE floating point mode to
    behavior]              the default or a specific behavior. The
                           OpenVMS I64 Linker accepts the following
                           IEEE behavior keywords:

                              FAST
                              UNDERFLOW_TO_ZERO
                              DENORM_RESULTS (default)
                              INEXACT

    LITERAL=fp_ctrl_mask   Sets the floating point mode to a literal
                           control mask. You can express this mask as
                           a decimal (%D), octal (%O), or hexadecimal
                           (%X) value (for example %X09800000,
                           which is equivalent to the default, IEEE_
                           FLOAT=DENORM_RESULTS).