Module: Fiddle::PackInfo

Do not use. This module is for internal use only.

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Included In: CStructEntity, CUnionEntity, Packer
Defined in:	ext/fiddle/lib/fiddle/pack.rb

Constant Summary

ALIGN_MAP =
# File 'ext/fiddle/lib/fiddle/pack.rb', line 6

{
  TYPE_VOIDP => ALIGN_VOIDP,
  TYPE_CHAR  => ALIGN_CHAR,
  TYPE_SHORT => ALIGN_SHORT,
  TYPE_INT   => ALIGN_INT,
  TYPE_LONG  => ALIGN_LONG,
  TYPE_FLOAT => ALIGN_FLOAT,
  TYPE_DOUBLE => ALIGN_DOUBLE,
  -TYPE_CHAR  => ALIGN_CHAR,
  -TYPE_SHORT => ALIGN_SHORT,
  -TYPE_INT   => ALIGN_INT,
  -TYPE_LONG  => ALIGN_LONG,
}

PACK_MAP =
# File 'ext/fiddle/lib/fiddle/pack.rb', line 20

{
  TYPE_VOIDP => ((SIZEOF_VOIDP == SIZEOF_LONG_LONG) ? "q" : "l!"),
  TYPE_CHAR  => "c",
  TYPE_SHORT => "s!",
  TYPE_INT   => "i!",
  TYPE_LONG  => "l!",
  TYPE_FLOAT => "f",
  TYPE_DOUBLE => "d",
  -TYPE_CHAR  => "c",
  -TYPE_SHORT => "s!",
  -TYPE_INT   => "i!",
  -TYPE_LONG  => "l!",
}

SIZE_MAP =
# File 'ext/fiddle/lib/fiddle/pack.rb', line 34

{
  TYPE_VOIDP => SIZEOF_VOIDP,
  TYPE_CHAR  => SIZEOF_CHAR,
  TYPE_SHORT => SIZEOF_SHORT,
  TYPE_INT   => SIZEOF_INT,
  TYPE_LONG  => SIZEOF_LONG,
  TYPE_FLOAT => SIZEOF_FLOAT,
  TYPE_DOUBLE => SIZEOF_DOUBLE,
  -TYPE_CHAR  => SIZEOF_CHAR,
  -TYPE_SHORT => SIZEOF_SHORT,
  -TYPE_INT   => SIZEOF_INT,
  -TYPE_LONG  => SIZEOF_LONG,
}

Class Method Summary

.align(addr, align) mod_func

Class Method Details

.align(addr, align) (mod_func)

[ GitHub ]

# File 'ext/fiddle/lib/fiddle/pack.rb', line 53


def align(addr, align)
  d = addr % align
  if( d == 0 )
    addr
  else
    addr + (align - d)
  end
end