--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/lzma/check.h	Tue Mar 18 17:55:14 2025 -0400
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: 0BSD */
+
+/**
+ * \file        lzma/check.h
+ * \brief       Integrity checks
+ * \note        Never include this file directly. Use <lzma.h> instead.
+ */
+
+/*
+ * Author: Lasse Collin
+ */
+
+#ifndef LZMA_H_INTERNAL
+#	error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief       Type of the integrity check (Check ID)
+ *
+ * The .xz format supports multiple types of checks that are calculated
+ * from the uncompressed data. They vary in both speed and ability to
+ * detect errors.
+ */
+typedef enum {
+	LZMA_CHECK_NONE     = 0,
+		/**<
+		 * No Check is calculated.
+		 *
+		 * Size of the Check field: 0 bytes
+		 */
+
+	LZMA_CHECK_CRC32    = 1,
+		/**<
+		 * CRC32 using the polynomial from the IEEE 802.3 standard
+		 *
+		 * Size of the Check field: 4 bytes
+		 */
+
+	LZMA_CHECK_CRC64    = 4,
+		/**<
+		 * CRC64 using the polynomial from the ECMA-182 standard
+		 *
+		 * Size of the Check field: 8 bytes
+		 */
+
+	LZMA_CHECK_SHA256   = 10
+		/**<
+		 * SHA-256
+		 *
+		 * Size of the Check field: 32 bytes
+		 */
+} lzma_check;
+
+
+/**
+ * \brief       Maximum valid Check ID
+ *
+ * The .xz file format specification specifies 16 Check IDs (0-15). Some
+ * of them are only reserved, that is, no actual Check algorithm has been
+ * assigned. When decoding, liblzma still accepts unknown Check IDs for
+ * future compatibility. If a valid but unsupported Check ID is detected,
+ * liblzma can indicate a warning; see the flags LZMA_TELL_NO_CHECK,
+ * LZMA_TELL_UNSUPPORTED_CHECK, and LZMA_TELL_ANY_CHECK in container.h.
+ */
+#define LZMA_CHECK_ID_MAX 15
+
+
+/**
+ * \brief       Test if the given Check ID is supported
+ *
+ * LZMA_CHECK_NONE and LZMA_CHECK_CRC32 are always supported (even if
+ * liblzma is built with limited features).
+ *
+ * \note        It is safe to call this with a value that is not in the
+ *              range [0, 15]; in that case the return value is always false.
+ *
+ * \param       check   Check ID
+ *
+ * \return      lzma_bool:
+ *              - true if Check ID is supported by this liblzma build.
+ *              - false otherwise.
+ */
+extern LZMA_API(lzma_bool) lzma_check_is_supported(lzma_check check)
+		lzma_nothrow lzma_attr_const;
+
+
+/**
+ * \brief       Get the size of the Check field with the given Check ID
+ *
+ * Although not all Check IDs have a check algorithm associated, the size of
+ * every Check is already frozen. This function returns the size (in bytes) of
+ * the Check field with the specified Check ID. The values are:
+ * { 0, 4, 4, 4, 8, 8, 8, 16, 16, 16, 32, 32, 32, 64, 64, 64 }
+ *
+ * \param       check   Check ID
+ *
+ * \return      Size of the Check field in bytes. If the argument is not in
+ *              the range [0, 15], UINT32_MAX is returned.
+ */
+extern LZMA_API(uint32_t) lzma_check_size(lzma_check check)
+		lzma_nothrow lzma_attr_const;
+
+
+/**
+ * \brief       Maximum size of a Check field
+ */
+#define LZMA_CHECK_SIZE_MAX 64
+
+
+/**
+ * \brief       Calculate CRC32
+ *
+ * Calculate CRC32 using the polynomial from the IEEE 802.3 standard.
+ *
+ * \param       buf     Pointer to the input buffer
+ * \param       size    Size of the input buffer
+ * \param       crc     Previously returned CRC value. This is used to
+ *                      calculate the CRC of a big buffer in smaller chunks.
+ *                      Set to zero when starting a new calculation.
+ *
+ * \return      Updated CRC value, which can be passed to this function
+ *              again to continue CRC calculation.
+ */
+extern LZMA_API(uint32_t) lzma_crc32(
+		const uint8_t *buf, size_t size, uint32_t crc)
+		lzma_nothrow lzma_attr_pure;
+
+
+/**
+ * \brief       Calculate CRC64
+ *
+ * Calculate CRC64 using the polynomial from the ECMA-182 standard.
+ *
+ * This function is used similarly to lzma_crc32().
+ *
+ * \param       buf     Pointer to the input buffer
+ * \param       size    Size of the input buffer
+ * \param       crc     Previously returned CRC value. This is used to
+ *                      calculate the CRC of a big buffer in smaller chunks.
+ *                      Set to zero when starting a new calculation.
+ *
+ * \return      Updated CRC value, which can be passed to this function
+ *              again to continue CRC calculation.
+ */
+extern LZMA_API(uint64_t) lzma_crc64(
+		const uint8_t *buf, size_t size, uint64_t crc)
+		lzma_nothrow lzma_attr_pure;
+
+
+/**
+ * \brief       Get the type of the integrity check
+ *
+ * This function can be called only immediately after lzma_code() has
+ * returned LZMA_NO_CHECK, LZMA_UNSUPPORTED_CHECK, or LZMA_GET_CHECK.
+ * Calling this function in any other situation has undefined behavior.
+ *
+ * \param       strm    Pointer to lzma_stream meeting the above conditions.
+ *
+ * \return      Check ID in the lzma_stream, or undefined if called improperly.
+ */
+extern LZMA_API(lzma_check) lzma_get_check(const lzma_stream *strm)
+		lzma_nothrow;