--- mstools/h/float.h	2018/08/09 18:20:01	1.1
+++ mstools/h/float.h	2018/08/09 18:23:05	1.1.1.4
@@ -1,7 +1,7 @@
 /***
 *float.h - constants for floating point values
 *
-*	Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
+*	Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
 *
 *Purpose:
 *	This file contains defines for a number of implementation dependent
@@ -18,10 +18,29 @@ extern "C" {
 #endif
 
 
-#if (_MSC_VER <= 600)
-#define __cdecl _cdecl
+/*
+ * Conditional macro definition for function calling type and variable type
+ * qualifiers.
+ */
+#if   ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
+
+/*
+ * Definitions for MS C8-32 (386/486) compiler
+ */
+#define _CRTAPI1 __cdecl
+#define _CRTAPI2 __cdecl
+
+#else
+
+/*
+ * Other compilers (e.g., MIPS)
+ */
+#define _CRTAPI1
+#define _CRTAPI2
+
 #endif
 
+
 #define DBL_DIG 	15			/* # of decimal digits of precision */
 #define DBL_EPSILON	2.2204460492503131e-016 /* smallest such that 1.0+DBL_EPSILON != 1.0 */
 #define DBL_MANT_DIG	53			/* # of bits in mantissa */
@@ -62,71 +81,106 @@ extern "C" {
 
 
 
+
+/* function prototypes */
+
+unsigned int _CRTAPI1 _clearfp(void);
+unsigned int _CRTAPI1 _controlfp(unsigned int,unsigned int);
+unsigned int _CRTAPI1 _statusfp(void);
+void _CRTAPI1 _fpreset(void);
+
+#define _clear87	_clearfp
+#define _status87	_statusfp
+
 /*
- *  8087/80287 math control information
+ * Abstract User Control Word Mask and bit definitions
  */
 
+#define _MCW_EM 	0x0008001f		/* interrupt Exception Masks */
+#define _EM_INEXACT	0x00000001		/*   inexact (precision) */
+#define _EM_UNDERFLOW	0x00000002		/*   underflow */
+#define _EM_OVERFLOW	0x00000004		/*   overflow */
+#define _EM_ZERODIVIDE	0x00000008		/*   zero divide */
+#define _EM_INVALID	0x00000010		/*   invalid */
+
+#define _MCW_RC 	0x00000300		/* Rounding Control */
+#define _RC_NEAR	0x00000000		/*   near */
+#define _RC_DOWN	0x00000100		/*   down */
+#define _RC_UP		0x00000200		/*   up */
+#define _RC_CHOP	0x00000300		/*   chop */
 
-/* User Control Word Mask and bit definitions.
- * These definitions match the 8087/80287
+/*
+ * Abstract User Status Word bit definitions
  */
 
-#define _MCW_EM 	0x003f		/* interrupt Exception Masks */
-#define _EM_INVALID	0x0001		/*   invalid */
-#define _EM_DENORMAL	0x0002		/*   denormal */
-#define _EM_ZERODIVIDE	0x0004		/*   zero divide */
-#define _EM_OVERFLOW	0x0008		/*   overflow */
-#define _EM_UNDERFLOW	0x0010		/*   underflow */
-#define _EM_INEXACT	0x0020		/*   inexact (precision) */
+#define _SW_INEXACT	0x00000001		/* inexact (precision) */
+#define _SW_UNDERFLOW	0x00000002		/* underflow */
+#define _SW_OVERFLOW	0x00000004		/* overflow */
+#define _SW_ZERODIVIDE	0x00000008		/* zero divide */
+#define _SW_INVALID	0x00000010		/* invalid */
 
-#define _MCW_IC 	0x1000		/* Infinity Control */
-#define _IC_AFFINE	0x1000		/*   affine */
-#define _IC_PROJECTIVE	0x0000		/*   projective */
 
-#define _MCW_RC 	0x0c00		/* Rounding Control */
-#define _RC_CHOP	0x0c00		/*   chop */
-#define _RC_UP		0x0800		/*   up */
-#define _RC_DOWN	0x0400		/*   down */
-#define _RC_NEAR	0x0000		/*   near */
+/*
+ * i386 specific definitions
+ */
 
-#define _MCW_PC 	0x0300		/* Precision Control */
-#define _PC_24		0x0000		/*    24 bits */
-#define _PC_53		0x0200		/*    53 bits */
-#define _PC_64		0x0300		/*    64 bits */
+#define _MCW_PC 	0x00030000		/* Precision Control */
+#define _PC_64		0x00000000		/*    64 bits */
+#define _PC_53		0x00010000		/*    53 bits */
+#define _PC_24		0x00020000		/*    24 bits */
 
+#define _MCW_IC 	0x00040000		/* Infinity Control */
+#define _IC_AFFINE	0x00040000		/*   affine */
+#define _IC_PROJECTIVE	0x00000000		/*   projective */
 
-/* initial Control Word value */
+#define _EM_DENORMAL	0x00080000		/* denormal exception mask (_control87 only) */
 
-#define _CW_DEFAULT ( _IC_AFFINE + _RC_NEAR + _PC_64 + _EM_DENORMAL + _EM_UNDERFLOW + _EM_INEXACT )
+#define _SW_DENORMAL	0x00080000		/* denormal status bit */
 
 
-/* user Status Word bit definitions */
+unsigned int _CRTAPI1 _control87(unsigned int,unsigned int);
 
-#define _SW_INVALID	0x0001	/* invalid */
-#define _SW_DENORMAL	0x0002	/* denormal */
-#define _SW_ZERODIVIDE	0x0004	/* zero divide */
-#define _SW_OVERFLOW	0x0008	/* overflow */
-#define _SW_UNDERFLOW	0x0010	/* underflow */
-#define _SW_INEXACT	0x0020	/* inexact (precision) */
 
+/*
+ * MIPS R4000 specific definitions
+ */
 
-/* invalid subconditions (_SW_INVALID also set) */
+#define _MCW_DN 	0x01000000		/* Denormal Control (R4000) */
+#define _DN_FLUSH	0x01000000		/*   flush to zero */
+#define _DN_SAVE	0x00000000		/*   save */
 
-#define _SW_UNEMULATED		0x0040	/* unemulated instruction */
-#define _SW_SQRTNEG		0x0080	/* square root of a neg number */
-#define _SW_STACKOVERFLOW	0x0200	/* FP stack overflow */
-#define _SW_STACKUNDERFLOW	0x0400	/* FP stack underflow */
 
+/* initial Control Word value */
+
+#ifdef	_M_IX86
+
+#define _CW_DEFAULT ( _RC_NEAR + _PC_64 + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
+
+#elif   defined(_M_MRX000) || defined(_MIPS_)
+
+#define _CW_DEFAULT ( _RC_NEAR + _DN_FLUSH + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
+
+#elif   defined (_ALPHA_)
+
+#define _CW_DEFAULT ( _RC_NEAR + _DN_FLUSH + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
+
+#endif
 
 /* Global variable holding floating point error code */
 
 #ifdef	_MT
-extern int * __fpecode(void);
+extern int * _CRTAPI1 __fpecode(void);
 #define _fpecode	(*__fpecode())
 #else
 extern int _fpecode;
 #endif
 
+/* invalid subconditions (_SW_INVALID also set) */
+
+#define _SW_UNEMULATED		0x0040	/* unemulated instruction */
+#define _SW_SQRTNEG		0x0080	/* square root of a neg number */
+#define _SW_STACKOVERFLOW	0x0200	/* FP stack overflow */
+#define _SW_STACKUNDERFLOW	0x0400	/* FP stack underflow */
 
 /*  Floating point error signals and return codes */
 
@@ -145,16 +199,37 @@ extern int _fpecode;
 #define _FPE_EXPLICITGEN	0x8c	/* raise( SIGFPE ); */
 
 
-/* function prototypes */
+/* IEEE recommended functions */
+
+double _CRTAPI1 _copysign (double, double);
+double _CRTAPI1 _chgsign (double);
+double _CRTAPI1 _scalb(double, long);
+double _CRTAPI1 _logb(double);
+double _CRTAPI1 _nextafter(double, double);
+int    _CRTAPI1 _finite(double);
+int    _CRTAPI1 _isnan(double);
+int    _CRTAPI1 _fpclass(double);
+
+#define _FPCLASS_SNAN	0x0001	/* signaling NaN */
+#define _FPCLASS_QNAN	0x0002	/* quiet NaN */
+#define _FPCLASS_NINF	0x0004	/* negative infinity */
+#define _FPCLASS_NN	0x0008	/* negative normal */
+#define _FPCLASS_ND	0x0010	/* negative denormal */
+#define _FPCLASS_NZ	0x0020	/* -0 */
+#define _FPCLASS_PZ	0x0040	/* +0 */
+#define _FPCLASS_PD	0x0080	/* positive denormal */
+#define _FPCLASS_PN	0x0100	/* positive normal */
+#define _FPCLASS_PINF	0x0200	/* positive infinity */
 
-unsigned int _clear87(void);
-unsigned int _control87(unsigned int,unsigned int);
-void _fpreset(void);
-unsigned int _status87(void);
 
 #if !__STDC__
 /* Non-ANSI names for compatibility */
 
+#define clear87			_clear87
+#define status87		_status87
+#define control87		_control87
+#define fpreset			_fpreset
+
 #define DBL_RADIX		_DBL_RADIX
 #define DBL_ROUNDS		_DBL_ROUNDS
 
@@ -212,8 +287,8 @@ unsigned int _status87(void);
 
 #define FPE_EXPLICITGEN 	_FPE_EXPLICITGEN
 
-#endif	/* __STDC__ */
 
+#endif	/* __STDC__ */
 
 #ifdef __cplusplus
 }