diff options
Diffstat (limited to 'dviware/catdvi/fixword.h')
-rw-r--r-- | dviware/catdvi/fixword.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/dviware/catdvi/fixword.h b/dviware/catdvi/fixword.h new file mode 100644 index 0000000000..3ef36cf8bf --- /dev/null +++ b/dviware/catdvi/fixword.h @@ -0,0 +1,54 @@ +/* catdvi - get text from DVI files + Copyright (C) 1999 Antti-Juhani Kaijanaho <gaia@iki.fi> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#ifndef FIXWORD_H +#define FIXWORD_H + +#include "bytesex.h" + +/* fix_word is used in TFM files; read the TFM file spec for more + info. */ + +#define FW_FIX_WORD_BIT 32 +#define FW_WHOLEPART_BIT 12 +#define FW_FRACTION_BIT (FW_FIX_WORD_BIT - FW_WHOLEPART_BIT) + +typedef sint32 fix_word_t; + +/* fix_word_t read_fw(FILE *); */ +#define read_fw(fp) (s_readbigendiannumber(4,(fp))) + +double fw2double(fix_word_t); + +/* fix_word_t double2fw(double); */ +#define double2fw(dbl) ((fix_word_t) ((dbl) * (1 << FW_FRACTION_BIT))) + +#define fw2int(fw) ((fw) / (1 << FW_FRACTION_BIT)) + +/* fix_word_t fw_negate(fix_word_t); */ +#define fw_negate(fw) (-(fw)) + +/* fix_word_t fw_sum(fix_word_t, fix_word_t); */ +#define fw_sum(fw1,fw2) ((fw1) + (fw2)) + +/* Calculates x * y. */ +fix_word_t fw_prod(fix_word_t x, fix_word_t y); + + + +#endif /* FIXWORD_H */ |