From 83196ba37bdc708ebfe9ea20fe0a397cb602cbf9 Mon Sep 17 00:00:00 2001 From: Peter Breitenlohner Date: Sat, 29 Jun 2013 10:04:59 +0000 Subject: Merging dvipdfmx and xdvipdfmx (continue) git-svn-id: svn://tug.org/texlive/trunk@31034 c570f23f-e606-0410-a88d-b1316a301751 --- Build/source/texk/dvipdfm-x/numbers.c | 228 ++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 Build/source/texk/dvipdfm-x/numbers.c (limited to 'Build/source/texk/dvipdfm-x/numbers.c') diff --git a/Build/source/texk/dvipdfm-x/numbers.c b/Build/source/texk/dvipdfm-x/numbers.c new file mode 100644 index 00000000000..56da780a305 --- /dev/null +++ b/Build/source/texk/dvipdfm-x/numbers.c @@ -0,0 +1,228 @@ +/* + + This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks. + + Copyright (C) 2002-2012 by Jin-Hwan Cho and Shunsaku Hirata, + the dvipdfmx project team. + + Copyright (C) 1998, 1999 by Mark A. Wicks + + 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +*/ + +#include "system.h" +#include "error.h" +#include "mfileio.h" +#include "numbers.h" + +UNSIGNED_BYTE get_unsigned_byte (FILE *file) +{ + int ch; + if ((ch = fgetc (file)) < 0) + ERROR ("File ended prematurely\n"); + return (UNSIGNED_BYTE) ch; +} + +#if 0 +UNSIGNED_BYTE sget_unsigned_byte (char *s) +{ + return *((unsigned char *) s); +} +#endif + +SIGNED_BYTE get_signed_byte (FILE *file) +{ + int byte; + byte = get_unsigned_byte(file); + if (byte >= 0x80) + byte -= 0x100; + return (SIGNED_BYTE) byte; +} + +UNSIGNED_PAIR get_unsigned_pair (FILE *file) +{ + int i; + UNSIGNED_BYTE byte; + UNSIGNED_PAIR pair = 0; + for (i=0; i<2; i++) { + byte = get_unsigned_byte(file); + pair = pair*0x100u + byte; + } + return pair; +} + +UNSIGNED_PAIR sget_unsigned_pair (unsigned char *s) +{ + int i; + UNSIGNED_BYTE byte; + UNSIGNED_PAIR pair = 0; + for (i=0; i<2; i++) { + byte = *(s++); + pair = pair*0x100u + byte; + } + return pair; +} + +SIGNED_PAIR get_signed_pair (FILE *file) +{ + int i; + long pair = 0; + for (i=0; i<2; i++) { + pair = pair*0x100 + get_unsigned_byte(file); + } + if (pair >= 0x8000) { + pair -= 0x10000l; + } + return (SIGNED_PAIR) pair; +} + + +UNSIGNED_TRIPLE get_unsigned_triple(FILE *file) +{ + int i; + long triple = 0; + for (i=0; i<3; i++) { + triple = triple*0x100u + get_unsigned_byte(file); + } + return (UNSIGNED_TRIPLE) triple; +} + +SIGNED_TRIPLE get_signed_triple(FILE *file) +{ + int i; + long triple = 0; + for (i=0; i<3; i++) { + triple = triple*0x100 + get_unsigned_byte(file); + } + if (triple >= 0x800000l) + triple -= 0x1000000l; + return (SIGNED_TRIPLE) triple; +} + +SIGNED_QUAD get_signed_quad(FILE *file) +{ + int byte, i; + long quad = 0; + + /* Check sign on first byte before reading others */ + byte = get_unsigned_byte(file); + quad = byte; + if (quad >= 0x80) + quad = byte - 0x100; + for (i=0; i<3; i++) { + quad = quad*0x100 + get_unsigned_byte(file); + } + return (SIGNED_QUAD) quad; +} + +UNSIGNED_QUAD get_unsigned_quad(FILE *file) +{ + int i; + unsigned long quad = 0; + for (i=0; i<4; i++) { + quad = quad*0x100u + get_unsigned_byte(file); + } + return (UNSIGNED_QUAD) quad; +} + +SIGNED_QUAD sqxfw (SIGNED_QUAD sq, fixword fw) +{ + int sign = 1; + unsigned long a, b, c, d, ad, bd, bc, ac; + unsigned long e, f, g, h, i, j, k; + unsigned long result; + /* Make positive. */ + if (sq < 0) { + sign = -sign; + sq = -sq; + } + if (fw < 0) { + sign = -sign; + fw = -fw; + } + a = ((unsigned long) sq) >> 16u; + b = ((unsigned long) sq) & 0xffffu; + c = ((unsigned long) fw) >> 16u; + d = ((unsigned long) fw) & 0xffffu; + ad = a*d; bd = b*d; bc = b*c; ac = a*c; + e = bd >> 16u; + f = ad >> 16u; + g = ad & 0xffffu; + h = bc >> 16u; + i = bc & 0xffffu; + j = ac >> 16u; + k = ac & 0xffffu; + result = (e+g+i + (1<<3)) >> 4u; /* 1<<3 is for rounding */ + result += (f+h+k) << 12u; + result += j << 28u; + return (sign > 0) ? result : result * -1L; +} + +#if 0 +SIGNED_QUAD axboverc (SIGNED_QUAD n1, SIGNED_QUAD n2, SIGNED_QUAD divide) +{ + int sign = 1; + unsigned long a, b, c, d, ad, bd, bc, ac, e, f, g, h, i, j, o; + unsigned long high, low; + SIGNED_QUAD result = 0; + /* Make positive. */ + if (n1 < 0) { + sign = -sign; + n1 = -n1; + } + if (n2 < 0) { + sign = -sign; + n2 = -n2; + } + if (divide < 0) { + sign = -sign; + divide = -divide; + } + a = ((unsigned long) n1) >> 16u; + b = ((unsigned long) n1) & 0xffffu; + c = ((unsigned long) n2) >> 16u; + d = ((unsigned long) n2) & 0xffffu; + ad = a*d; bd = b*d; bc = b*c; ac = a*c; + e = bd >> 16u; f = bd & 0xffffu; + g = ad >> 16u; h = ad & 0xffffu; + i = bc >> 16u; j = bc & 0xffffu; + o = e+h+j; + high = g+i+(o>>16u)+ac; o &= 0xffffu; + low = (o << 16) + f; + if (high >= divide) + ERROR ("Overflow in axboc"); + { + int k; + for (k=0; k<32; k++) { + high *= 2; + result *= 2; + if (low >= 0x80000000) { + low -= 0x80000000; + high += 1; + } + low *= 2; + if (high > divide) { + high -= divide; + result += 1; + } + } + } + high *= 2; + if (high >= divide) + result += 1; + return (sign>0)?result:-result; +} +#endif + -- cgit v1.2.3