.G_FLOATING evaluates the specified floating-point constants and
stores the results in the object module. .G_FLOATING generates
64-bit data (1 bit of sign, 11 bits of exponent, and 52 bits of
fraction). See the description of .D_FLOATING for information
on storing double-precision floating-point constants and the
descriptions of .F_FLOATING, S_FLOATING, and T_FLOATING for
descriptions of other floating-point constants.