ddoouubbllee -- C Keyword

Data type

A ddoouubbllee  is the data  type that encodes  a double-precision floating-point
number.  On most machines, ssiizzeeooff(ddoouubbllee) is defined as four machine words,
or eight cchhaarrs.  If you wish  your code to be portable, do _n_o_t use routines
that depend on a ddoouubbllee being  64 bits long.  The ranges of values that can
be held by a COHERENT ddoouubbllee are set in header file ffllooaatt.hh.

Different formats  are used to  encode ddoouubbllees on  various machines.  These
formats include IEEE, DECVAX,  and BCD (binary coded decimal), as described
in the entry for ffllooaatt. COHERENT  286 uses DECVAX format; COHERENT 386 uses
IEEE format.

_S_e_e _A_l_s_o
CC kkeeyywwoorrddss, ddaattaa ffoorrmmaattss, ffllooaatt, ffllooaatt.hh, ppoorrttaabbiilliittyy
ANSI Standard, section 6.1.2.5
