1 files changed, 85 insertions, 0 deletions
diff --git a/include/internal/numbers.h b/include/internal/numbers.h
new file mode 100644
index 0000000000..4f4d3306d5
--- /dev/null
+++ b/include/internal/numbers.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OSSL_INTERNAL_NUMBERS_H
+# define OSSL_INTERNAL_NUMBERS_H
+# pragma once
+
+# include <limits.h>
+
+# if (-1 & 3) == 0x03           /* Two's complement */
+
+#  define __MAXUINT__(T) ((T) -1)
+#  define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
+#  define __MININT__(T) (-__MAXINT__(T) - 1)
+
+# elif (-1 & 3) == 0x02         /* One's complement */
+
+#  define __MAXUINT__(T) (((T) -1) + 1)
+#  define __MAXINT__(T) ((T) ((((T) 1) << ((sizeof(T) * CHAR_BIT) - 1)) ^ __MAXUINT__(T)))
+#  define __MININT__(T) (-__MAXINT__(T))
+
+# elif (-1 & 3) == 0x01         /* Sign/magnitude */
+
+#  define __MAXINT__(T) ((T) (((((T) 1) << ((sizeof(T) * CHAR_BIT) - 2)) - 1) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 2))))
+#  define __MAXUINT__(T) ((T) (__MAXINT__(T) | (((T) 1) << ((sizeof(T) * CHAR_BIT) - 1))))
+#  define __MININT__(T) (-__MAXINT__(T))
+
+# else
+
+#  error "do not know the integer encoding on this architecture"
+
+# endif
+
+# ifndef INT8_MAX
+#  define INT8_MIN __MININT__(int8_t)
+#  define INT8_MAX __MAXINT__(int8_t)
+#  define UINT8_MAX __MAXUINT__(uint8_t)
+# endif
+
+# ifndef INT16_MAX
+#  define INT16_MIN __MININT__(int16_t)
+#  define INT16_MAX __MAXINT__(int16_t)
+#  define UINT16_MAX __MAXUINT__(uint16_t)
+# endif
+
+# ifndef INT32_MAX
+#  define INT32_MIN __MININT__(int32_t)
+#  define INT32_MAX __MAXINT__(int32_t)
+#  define UINT32_MAX __MAXUINT__(uint32_t)
+# endif
+
+# ifndef INT64_MAX
+#  define INT64_MIN __MININT__(int64_t)
+#  define INT64_MAX __MAXINT__(int64_t)
+#  define UINT64_MAX __MAXUINT__(uint64_t)
+# endif
+
+# ifndef INT128_MAX
+#  if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16
+typedef __int128_t int128_t;
+typedef __uint128_t uint128_t;
+#   define INT128_MIN __MININT__(int128_t)
+#   define INT128_MAX __MAXINT__(int128_t)
+#   define UINT128_MAX __MAXUINT__(uint128_t)
+#  endif
+# endif
+
+# ifndef SIZE_MAX
+#  define SIZE_MAX __MAXUINT__(size_t)
+# endif
+
+# ifndef OSSL_INTMAX_MAX
+#  define OSSL_INTMAX_MIN __MININT__(ossl_intmax_t)
+#  define OSSL_INTMAX_MAX __MAXINT__(ossl_intmax_t)
+#  define OSSL_UINTMAX_MAX __MAXUINT__(ossl_uintmax_t)
+# endif
+
+#endif
+