1 files changed, 99 insertions, 0 deletions
diff --git a/StdLib/Include/sys/float_ieee754.h b/StdLib/Include/sys/float_ieee754.h
new file mode 100644
index 0000000000..1c8cfdeddb
--- /dev/null
+++ b/StdLib/Include/sys/float_ieee754.h
@@ -0,0 +1,99 @@
+/*  $NetBSD: float_ieee754.h,v 1.8 2005/12/11 12:25:20 christos Exp $ */
+
+/*
+ * Copyright (c) 1992, 1993
+ *  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.
+ *
+ *  @(#)float.h 8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * NOTICE: This is not a standalone file.  To use it, #include it in
+ * your port's float.h header.
+ */
+
+#ifndef _SYS_FLOAT_IEEE754_H_
+#define _SYS_FLOAT_IEEE754_H_
+
+#include <sys/EfiCdefs.h>
+#include <sys/featuretest.h>
+
+#ifndef FLT_ROUNDS
+__BEGIN_DECLS
+extern int __flt_rounds(void);
+__END_DECLS
+#define FLT_ROUNDS  __flt_rounds()
+#endif
+
+#ifndef FLT_EVAL_METHOD
+#if __GNUC_PREREQ__(3, 3)
+#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
+#endif /* GCC >= 3.3 */
+#endif /* defined(FLT_EVAL_METHOD) */
+
+#define FLT_RADIX 2   /* b */
+
+#define FLT_MANT_DIG  24    /* p */
+#define FLT_EPSILON 1.19209290E-7F  /* b**(1-p) */
+#define FLT_DIG   6   /* floor((p-1)*log10(b))+(b == 10) */
+#define FLT_MIN_EXP (-125)    /* emin */
+#define FLT_MIN   1.17549435E-38F /* b**(emin-1) */
+#define FLT_MIN_10_EXP  (-37)   /* ceil(log10(b**(emin-1))) */
+#define FLT_MAX_EXP 128   /* emax */
+//#define FLT_MAX   3.40282347e+38F /* (1-b**(-p))*b**emax */
+#define FLT_MAX   3.402823e+38F /* (1-b**(-p))*b**emax */
+#define FLT_MAX_10_EXP  38    /* floor(log10((1-b**(-p))*b**emax)) */
+
+#define DBL_MANT_DIG  53
+#define DBL_EPSILON 2.2204460492503131E-16
+#define DBL_DIG   15
+#define DBL_MIN_EXP (-1021)
+#define DBL_MIN   2.2250738585072014E-308
+#define DBL_MIN_10_EXP  (-307)
+#define DBL_MAX_EXP 1024
+#define DBL_MAX   1.7976931348623157E+308
+#define DBL_MAX_10_EXP  308
+
+/*
+ * If no extended-precision type is defined by the machine-dependent
+ * header including this, default to `long double' being double-precision.
+ */
+#ifndef LDBL_MANT_DIG
+  #define LDBL_MANT_DIG     DBL_MANT_DIG
+  #define LDBL_EPSILON      DBL_EPSILON
+  #define LDBL_DIG          DBL_DIG
+  #define LDBL_MIN_EXP      DBL_MIN_EXP
+  #define LDBL_MIN          DBL_MIN
+  #define LDBL_MIN_10_EXP   DBL_MIN_10_EXP
+  #define LDBL_MAX_EXP      DBL_MAX_EXP
+  #define LDBL_MAX          DBL_MAX
+  #define LDBL_MAX_10_EXP   DBL_MAX_10_EXP
+
+  #define DECIMAL_DIG       17    /* ceil((1+p*log10(b))-(b==10) */
+#endif /* LDBL_MANT_DIG */
+
+#endif  /* _SYS_FLOAT_IEEE754_H_ */