Add Watcon float.h for basic.c compile

libc/include/watcom/float.h

@@ -0,0 +1,263 @@
+/*
+ *  float.h/cfloat     Floating point functions
+ *
+ * =========================================================================
+ *
+ *                          Open Watcom Project
+ *
+ * Copyright (c) 2004-2024 The Open Watcom Contributors. All Rights Reserved.
+ * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
+ *
+ *    This file is automatically generated. Do not edit directly.
+ *
+ * =========================================================================
+ */
+#ifndef _FLOAT_H_INCLUDED
+#define _FLOAT_H_INCLUDED
+
+#ifndef _ENABLE_AUTODEPEND
+ #pragma read_only_file
+#endif
+
+#ifndef __COMDEF_H_INCLUDED
+ #include <_comdef.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FLT_NORMALIZE   0
+#define FLT_RADIX       2
+#define FLT_ROUNDS      1       /* round to nearest */
+#define _DBL_RADIX      2
+#define _DBL_ROUNDS     1
+#define _LDBL_RADIX     _DBL_RADIX
+#define _LDBL_ROUNDS    _DBL_ROUNDS
+
+#if !defined( _NO_EXT_KEYS ) /* extensions enabled */
+#define DBL_RADIX      _DBL_RADIX
+#define DBL_ROUNDS     _DBL_ROUNDS
+#define LDBL_RADIX     _DBL_RADIX
+#define LDBL_ROUNDS    _DBL_ROUNDS
+#endif /* extensions enabled */
+
+/* number of base-FLT_RADIX digits in the floating-point mantissa */
+#define FLT_MANT_DIG    24
+#define DBL_MANT_DIG    53
+#define LDBL_MANT_DIG   53
+
+/* number of decimal digits of precision */
+#define FLT_DIG         6
+#define DBL_DIG         15
+#define LDBL_DIG        15
+
+/* decimal digits needed to accurately represent any floating-point value */
+#define DECIMAL_DIG     17
+
+/* minimum negative integer such that FLT_RADIX raised to that power minus 1
+ is a normalized floating-point number */
+#define FLT_MIN_EXP     (-125)
+#define DBL_MIN_EXP     (-1021)
+#define LDBL_MIN_EXP    (-1021)
+
+/* minimum negative integer such that 10 raised to that power is in the
+   range of normalized floating-point numbers */
+#define FLT_MIN_10_EXP  (-37)
+#define DBL_MIN_10_EXP  (-307)
+#define LDBL_MIN_10_EXP (-307)
+
+/* maximum integer such that FLT_RADIX raised to that power minus 1 is a
+   representable floating-point number */
+#define FLT_MAX_EXP     128
+#define DBL_MAX_EXP     1024
+#define LDBL_MAX_EXP    1024
+
+/* maximum integer such that 10 raised to that power is in the range of
+   representable floating-point numbers */
+#define FLT_MAX_10_EXP  38
+#define DBL_MAX_10_EXP  308
+#define LDBL_MAX_10_EXP 308
+
+/* maximum representable floating-point number */
+#define FLT_MAX         3.402823466e+38f
+#define DBL_MAX         1.7976931348623157e+308
+#define LDBL_MAX        DBL_MAX
+
+/* minimum positive floating-point number x such that 1.0 + x != 1.0 */
+#define FLT_EPSILON     1.192092896e-7f
+#define DBL_EPSILON     2.2204460492503131e-16
+#define LDBL_EPSILON    DBL_EPSILON
+
+/* minimum representable positive floating-point number */
+#define FLT_MIN         1.175494351e-38f
+#define DBL_MIN         2.2250738585072014e-308
+#define LDBL_MIN        DBL_MIN
+
+/*
+ *  8087/80287/80387 math co-processor control information
+ */
+
+/* 80(x)87 Control Word Mask and 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 result - precision */
+
+#define _MCW_IC         0x1000  /* Infinity Control */
+#define _IC_AFFINE      0x1000  /*   affine */
+#define _IC_PROJECTIVE  0x0000  /*   projective */
+
+#define _MCW_RC         0x0c00  /* Rounding Control */
+#define _RC_NEAR        0x0000  /*   near */
+#define _RC_DOWN        0x0400  /*   down */
+#define _RC_UP          0x0800  /*   up */
+#define _RC_CHOP        0x0c00  /*   chop */
+
+#define _MCW_PC         0x0300  /* Precision Control */
+#define _PC_24          0x0000  /*    24 bits */
+#define _PC_53          0x0200  /*    53 bits */
+#define _PC_64          0x0300  /*    64 bits */
+
+/* initial Control Word value */
+
+#define _CW_DEFAULT (_IC_AFFINE | _RC_NEAR | _PC_53 \
+                    | _EM_INVALID | _EM_DENORMAL | _EM_ZERODIVIDE \
+                    | _EM_OVERFLOW | _EM_UNDERFLOW | _EM_INEXACT)
+
+/* 80(x)87 Status Word bit definitions */
+
+#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) */
+
+/* the following are generated by software */
+
+#define _SW_UNEMULATED      0x0040  /* unemulated instruction */
+/* invalid subconditions (_SW_INVALID also set) */
+#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 codes */
+
+#define _FPE_INVALID            0x81
+#define _FPE_DENORMAL           0x82
+#define _FPE_ZERODIVIDE         0x83
+#define _FPE_OVERFLOW           0x84
+#define _FPE_UNDERFLOW          0x85
+#define _FPE_INEXACT            0x86
+
+#define _FPE_UNEMULATED         0x87
+#define _FPE_SQRTNEG            0x88
+#define _FPE_STACKOVERFLOW      0x8a
+#define _FPE_STACKUNDERFLOW     0x8b
+#define _FPE_EXPLICITGEN        0x8c
+#define _FPE_IOVERFLOW          0x8d /* issued on fist(p) when value is too
+                                        large to be represented as integer */
+#define _FPE_LOGERR             0x8e
+#define _FPE_MODERR             0x8f
+
+#if !defined( _NO_EXT_KEYS ) /* extensions enabled */
+
+/*
+ *  8087/80287/80387 math co-processor control information
+ */
+
+/* 80(x)87 Control Word Mask and bit definitions. */
+
+#define MCW_EM          _MCW_EM
+#define EM_INVALID      _EM_INVALID
+#define EM_DENORMAL     _EM_DENORMAL
+#define EM_ZERODIVIDE   _EM_ZERODIVIDE
+#define EM_OVERFLOW     _EM_OVERFLOW
+#define EM_UNDERFLOW    _EM_UNDERFLOW
+#define EM_INEXACT      _EM_INEXACT
+#define EM_PRECISION    _EM_INEXACT     /* WATCOM's name */
+
+#define MCW_IC          _MCW_IC
+#define IC_AFFINE       _IC_AFFINE
+#define IC_PROJECTIVE   _IC_PROJECTIVE
+
+#define MCW_RC          _MCW_RC
+#define RC_NEAR         _RC_NEAR
+#define RC_DOWN         _RC_DOWN
+#define RC_UP           _RC_UP
+#define RC_CHOP         _RC_CHOP
+
+#define MCW_PC          _MCW_PC
+#define PC_24           _PC_24
+#define PC_53           _PC_53
+#define PC_64           _PC_64
+
+/* 80(x)87 Status Word bit definitions */
+
+#define SW_INVALID          _SW_INVALID
+#define SW_DENORMAL         _SW_DENORMAL
+#define SW_ZERODIVIDE       _SW_ZERODIVIDE
+#define SW_OVERFLOW         _SW_OVERFLOW
+#define SW_UNDERFLOW        _SW_UNDERFLOW
+#define SW_INEXACT          _SW_INEXACT
+/* the following are generated by software */
+#define SW_UNEMULATED       _SW_UNEMULATED
+#define SW_SQRTNEG          _SW_SQRTNEG
+#define SW_STACKOVERFLOW    _SW_STACKOVERFLOW
+#define SW_STACKUNDERFLOW   _SW_STACKUNDERFLOW
+
+/* Floating-point error codes */
+
+#define FPE_INVALID         _FPE_INVALID
+#define FPE_DENORMAL        _FPE_DENORMAL
+#define FPE_ZERODIVIDE      _FPE_ZERODIVIDE
+#define FPE_OVERFLOW        _FPE_OVERFLOW
+#define FPE_UNDERFLOW       _FPE_UNDERFLOW
+#define FPE_INEXACT         _FPE_INEXACT
+#define FPE_UNEMULATED      _FPE_UNEMULATED
+#define FPE_SQRTNEG         _FPE_SQRTNEG
+#define FPE_STACKOVERFLOW   _FPE_STACKOVERFLOW
+#define FPE_STACKUNDERFLOW  _FPE_STACKUNDERFLOW
+#define FPE_EXPLICITGEN     _FPE_EXPLICITGEN
+#define FPE_IOVERFLOW       _FPE_IOVERFLOW
+#define FPE_LOGERR          _FPE_LOGERR
+#define FPE_MODERR          _FPE_MODERR
+
+_WMRTLINK extern unsigned _clear87(void);
+_WCRTLINK extern unsigned _control87(unsigned,unsigned);
+_WCRTLINK extern unsigned _controlfp(unsigned,unsigned);
+_WCRTLINK extern void     _fpreset(void);
+_WMRTLINK extern unsigned _status87(void);
+_WMRTLINK extern int      _finite(double);
+
+/* Floating-point Infinity and NaN constants */
+
+_WMRTDATA extern const float        __f_infinity;
+_WMRTDATA extern const float        __f_posqnan;
+_WMRTDATA extern const double       __d_infinity;
+_WMRTDATA extern const double       __d_posqnan;
+_WMRTDATA extern const long double  __ld_infinity;
+_WMRTDATA extern const long double  __ld_posqnan;
+
+#define _INFF      __f_infinity
+#define _INFINITYF __f_infinity
+#define _INF       __d_infinity
+#define _INFINITY  __d_infinity
+#define _INFL      __ld_infinity
+#define _INFINITYL __ld_infinity
+#define _NANF      __f_posqnan
+#define _NAN       __d_posqnan
+#define _NANL      __ld_posqnan
+
+#endif /* extensions enabled */
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif