--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/leptonica/src/array.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,109 @@
+/*====================================================================*
+ -  Copyright (C) 2001 Leptonica.  All rights reserved.
+ -
+ -  Redistribution and use in source and binary forms, with or without
+ -  modification, are permitted provided that the following conditions
+ -  are met:
+ -  1. Redistributions of source code must retain the above copyright
+ -     notice, this list of conditions and the following disclaimer.
+ -  2. Redistributions in binary form must reproduce the above
+ -     copyright notice, this list of conditions and the following
+ -     disclaimer in the documentation and/or other materials
+ -     provided with the distribution.
+ -
+ -  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ -  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ -  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ -  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ANY
+ -  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ -  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ -  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ -  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ -  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ -  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ -  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *====================================================================*/
+
+#ifndef  LEPTONICA_ARRAY_H
+#define  LEPTONICA_ARRAY_H
+
+/*!
+ * \file array.h
+ *
+ * <pre>
+ *  This file has typedefs for the following array structs:
+ *      struct Numa          array of floats
+ *      struct Numaa
+ *      struct L_Dna         array of doubles
+ *      struct L_Dnaa
+ *      struct L_Dnahash
+ *      struct Sarray        array of C-strings
+ *      struct L_Bytea       array of bytes
+ *
+ *  It contains definitions for:
+ *      Numa interpolation flags
+ *      Numa border flags
+ *      Numa data type conversion to string
+ *
+ *  Here are the non-image-related arrays in leptonica:
+ *  * Numa, L_Dna, L_Ptra, Sarray:
+ *    These have most of the typical operations of vectors, such as add,
+ *    insert, remove and replace.
+ *  * Numaa, L_Dnaa, L_Ptraa:
+ *    These are arrays of float, double and generic pointer arrays.
+ *  * L_Bytea:
+ *    This is an array of bytes, analogous to a C++ string.
+ *  * L_Dnahash:
+ *    This is a simple hashing for integers, used in the jbig2 classifier.
+ * </pre>
+ */
+
+
+/*------------------------------------------------------------------------*
+ *                             Array Structs                              *
+ *------------------------------------------------------------------------*/
+    /*! Number array: an array of floats */
+typedef struct Numa  NUMA;
+
+    /*! Array of number arrays */
+typedef struct Numaa  NUMAA;
+
+    /*! Double number array: an array of doubles */
+typedef struct L_Dna  L_DNA;
+
+    /*! Array of double number arrays */
+typedef struct L_Dnaa  L_DNAA;
+
+    /*! Array of double number arrays, used as a simple hash */
+typedef struct L_DnaHash L_DNAHASH;
+
+    /*! String array: an array of C strings */
+typedef struct Sarray SARRAY;
+
+    /*! Byte array (analogous to C++ "string") */
+typedef struct L_Bytea L_BYTEA;
+
+
+/*------------------------------------------------------------------------*
+ *                              Array flags                               *
+ *------------------------------------------------------------------------*/
+/*! Numa Interpolation */
+enum {
+    L_LINEAR_INTERP = 1,        /*!< linear     */
+    L_QUADRATIC_INTERP = 2      /*!< quadratic  */
+};
+
+/*! Numa Border Adding */
+enum {
+    L_CONTINUED_BORDER = 1,    /*!< extended with same value                  */
+    L_SLOPE_BORDER = 2,        /*!< extended with constant normal derivative  */
+    L_MIRRORED_BORDER = 3      /*!< mirrored                                  */
+};
+
+/*! Numa Data Conversion */
+enum {
+    L_INTEGER_VALUE = 1,        /*!< convert to integer  */
+    L_FLOAT_VALUE = 2           /*!< convert to float    */
+};
+
+#endif  /* LEPTONICA_ARRAY_H */