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