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diff --git a/StdLib/Include/Aarch64/machine/limits.h b/StdLib/Include/Aarch64/machine/limits.h
new file mode 100644
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+++ b/StdLib/Include/Aarch64/machine/limits.h
@@ -0,0 +1,100 @@
+/*      $NetBSD: limits.h,v 1.9 2008/08/29 19:08:29 matt Exp $  */
+
+/*
+ * Copyright (c) 1988 The Regents of the University of California.
+ * 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.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS OR 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.
+ *
+ *      from: @(#)limits.h      7.2 (Berkeley) 6/28/90
+ */
+
+//TODO These values have been chosen during porting with the selection criteria
+//of being different from ARMv7 in the hope of discovering as many bugs as
+//possible as soon as possible. They are NOT authoritative!
+// ... (and should be replaced ASAP with more carefully chosen ones)
+
+#ifndef _AARCH64_LIMITS_H_
+#define _AARCH64_LIMITS_H_
+
+#include <sys/featuretest.h>
+
+#define __CHAR_BIT        8               /* number of bits in a char */
+//#define __MB_LEN_MAX      32              /* no multibyte characters */
+
+#define __SCHAR_MIN       (-0x7f-1)       /* max value for a signed char */
+#define __SCHAR_MAX       0x7f            /* min value for a signed char */
+
+#define __UCHAR_MAX       0xff            /* max value for an unsigned char */
+#define __CHAR_MAX        0xff            /* max value for a char */
+#define __CHAR_MIN        0               /* min value for a char */
+
+#define __USHRT_MAX       0xffff          /* max value for an unsigned short */
+#define __SHRT_MAX        0x7fff          /* max value for a short */
+#define __SHRT_MIN        (-0x7fff-1)     /* min value for a short */
+
+#define __UINT_MAX        0xffffffffU     /* max value for an unsigned int */
+#define __INT_MAX         0x7fffffff      /* max value for an int */
+#define __INT_MIN         (-0x7fffffff-1) /* min value for an int */
+
+#define __ULONG_MAX       0xffffffffffffffffUL    /* max value for an unsigned long */
+#define __LONG_MAX        0x7fffffffffffffffL     /* max value for a long */
+#define __LONG_MIN        (-0x7fffffffffffffffL-1)        /* min value for a long */
+
+#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
+    defined(_NETBSD_SOURCE)
+#define SSIZE_MAX         LONG_MAX        /* max value for a ssize_t */
+
+#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
+    defined(_NETBSD_SOURCE)
+#define __ULLONG_MAX      0xffffffffffffffffULL   /* max unsigned long long */
+#define __LLONG_MAX       0x7fffffffffffffffLL    /* max signed long long */
+#define __LLONG_MIN       (-0x7fffffffffffffffLL-1) /* min signed long long */
+#endif
+
+#if defined(_NETBSD_SOURCE)
+#define SIZE_T_MAX      LONG_MAX        /* max value for a size_t */
+
+#define UQUAD_MAX       0xffffffffffffffffLL            /* max unsigned quad */
+#define QUAD_MAX        0x7fffffffffffffffLL            /* max signed quad */
+#define QUAD_MIN        (-0x7fffffffffffffffLL-1)       /* min signed quad */
+
+#endif /* _NETBSD_SOURCE */
+#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
+
+#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
+#define LONG_BIT        64
+#define WORD_BIT        32
+
+#define DBL_DIG         15
+#define DBL_MAX         1.7976931348623157E+308
+#define DBL_MIN         2.2250738585072014E-308
+
+//#define FLT_DIG         6
+//#define FLT_MAX         3.40282347E+38F
+//#define FLT_MIN         1.17549435E-38F
+#endif
+
+#endif  /* _AARCH64_LIMITS_H_ */