md_atof is undocumented

[Nick Clifton]

Hi Harshad,

> The function md_atof is required on all targets, but is not
> documented yet! 

Oh alright.  I will check in the following patch to add the
documentation. :-)

Cheers
        Nick


2001-06-22  Nick Clifton  <nickc@cambridge.redhat.com>

	* doc/internals.texi (CPU backend): Document md_atof.

Index: doc/internals.texi
===================================================================
RCS file: /cvs/src/src/gas/doc/internals.texi,v
retrieving revision 1.23
diff -p -r1.23 internals.texi
*** internals.texi	2001/05/22 10:23:50	1.23
--- internals.texi	2001/06/22 09:30:32
*************** the MIPS which support options to change
*** 1130,1135 ****
--- 1130,1151 ----
  is a runtime decision.  On other targets, @code{md_number_to_chars} can be a
  simple macro.
  
+ @item md_atof (@var{type},@var{litP},@var{sizeP})
+ @cindex md_atof
+ This function is called to convert an ASCII string into a floating point value
+ in format used by the CPU.  It takes three arguments.  The first is @var{type}
+ which is a byte describing the type of floating point number to be created.
+ Possible values are @var{'f'} or @var{'s'} for single precision, @var{'d'} or
+ @var{'r'} for double precision and @var{'x'} or @var{'p'} for extended
+ precision.  Either lower or upper case versions of these letters can be used.
+ 
+ The second parameter is @var{litP} which is a pointer to a byte array where the
+ converted value should be stored.  The third argument is @var{sizeP}, which is
+ a pointer to a integer that should be filled in with the number of
+ @var{LITTLENUM}s emitted into the byte array.  (@var{LITTLENUM} is defined in
+ gas/bignum.h).  The function should return NULL upon success or an error string
+ upon failure.
+ 
  @item md_reloc_size
  @cindex md_reloc_size
  This variable is only used in the original version of gas (not