Update contrib/libs/ngtcp2 to 1.15.1

commit_hash:b2f5dc7047d3d3a77ccd864c0e4bf1d99c87247c

1 files changed, 54 insertions, 0 deletions

diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pcg.h b/contrib/libs/ngtcp2/lib/ngtcp2_pcg.h
new file mode 100644
index 00000000000..a637183efc1
--- /dev/null
+++ b/contrib/libs/ngtcp2/lib/ngtcp2_pcg.h
@@ -0,0 +1,54 @@
+/*
+ * ngtcp2
+ *
+ * Copyright (c) 2025 ngtcp2 contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGTCP2_PCG_H
+#define NGTCP2_PCG_H
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif /* defined(HAVE_CONFIG_H) */
+
+#include <ngtcp2/ngtcp2.h>
+
+typedef struct ngtcp2_pcg32 {
+  uint64_t state;
+} ngtcp2_pcg32;
+
+/*
+ * ngtcp2_pcg32_init initializes |pcg| with |seed|.
+ */
+void ngtcp2_pcg32_init(ngtcp2_pcg32 *pcg, uint64_t seed);
+
+/*
+ * ngtcp2_pcg32_rand returns a random value in [0, UINT32_MAX].
+ */
+uint32_t ngtcp2_pcg32_rand(ngtcp2_pcg32 *pcg);
+
+/*
+ * ngtcp2_pcg32_rand_n returns a random value in [0, n).  |n| must not
+ * be zero.
+ */
+uint32_t ngtcp2_pcg32_rand_n(ngtcp2_pcg32 *pcg, uint32_t n);
+
+#endif /* !defined(NGTCP2_PCG_H) */