Initial import of libdpf.

Co-authored-by: Cursor <cursoragent@cursor.com>

thirdparty/portable-snippets/random/random.h

@@ -0,0 +1,38 @@
+#if !defined(PSNIP_RANDOM__H)
+#define PSNIP_RANDOM__H
+
+#include <stdlib.h>
+
+#if !defined(psnip_uint8_t)
+#  include "../exact-int/exact-int.h"
+#endif
+
+#if defined(HEDLEY_ARRAY_PARAM)
+#  define PSNIP_RANDOM_ARRAY_PARAM(expr) HEDLEY_ARRAY_PARAM(expr)
+#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && !defined(__cplusplus) && !defined(__PGI)
+#  define PSNIP_RANDOM_ARRAY_PARAM(expr) (expr)
+#else
+#  define PSNIP_RANDOM_ARRAY_PARAM(expr)
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+enum PSnipRandomSource {
+  PSNIP_RANDOM_SOURCE_SECURE,
+  PSNIP_RANDOM_SOURCE_REPRODUCIBLE,
+  PSNIP_RANDOM_SOURCE_FAST,
+};
+
+int            psnip_random_bytes    (enum PSnipRandomSource source,
+				      size_t length,
+				      psnip_uint8_t data[PSNIP_RANDOM_ARRAY_PARAM(length)]);
+psnip_uint32_t psnip_random_get_seed (void);
+void           psnip_random_set_seed (psnip_uint32_t seed);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* defined(PSNIP_RANDOM__H) */