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1.1 root 1: /***
2: *float.h - constants for floating point values
3: *
1.1.1.3 ! root 4: * Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved.
1.1 root 5: *
6: *Purpose:
7: * This file contains defines for a number of implementation dependent
8: * values which are commonly used by sophisticated numerical (floating
9: * point) programs.
10: * [ANSI]
11: *
12: ****/
13:
14: #ifndef _INC_FLOAT
15:
16: #ifdef __cplusplus
17: extern "C" {
18: #endif
19:
20:
1.1.1.3 ! root 21: /*
! 22: * Conditional macro definition for function calling type and variable type
! 23: * qualifiers.
! 24: */
! 25: #if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
! 26:
! 27: /*
! 28: * Definitions for MS C8-32 (386/486) compiler
! 29: */
! 30: #define _CRTAPI1 __cdecl
! 31: #define _CRTAPI2 __cdecl
! 32:
! 33: #elif ( _MSC_VER == 600 )
! 34:
! 35: /*
! 36: * Definitions for old MS C6-386 compiler
! 37: */
! 38: #define _CRTAPI1 _cdecl
! 39: #define _CRTAPI2 _cdecl
! 40: #define _M_IX86 300
! 41:
! 42: #else
! 43:
! 44: /*
! 45: * Other compilers (e.g., MIPS)
! 46: */
! 47: #define _CRTAPI1
! 48: #define _CRTAPI2
! 49:
1.1.1.2 root 50: #endif
1.1 root 51:
1.1.1.3 ! root 52:
1.1 root 53: #define DBL_DIG 15 /* # of decimal digits of precision */
54: #define DBL_EPSILON 2.2204460492503131e-016 /* smallest such that 1.0+DBL_EPSILON != 1.0 */
55: #define DBL_MANT_DIG 53 /* # of bits in mantissa */
56: #define DBL_MAX 1.7976931348623158e+308 /* max value */
57: #define DBL_MAX_10_EXP 308 /* max decimal exponent */
58: #define DBL_MAX_EXP 1024 /* max binary exponent */
59: #define DBL_MIN 2.2250738585072014e-308 /* min positive value */
60: #define DBL_MIN_10_EXP (-307) /* min decimal exponent */
61: #define DBL_MIN_EXP (-1021) /* min binary exponent */
62: #define _DBL_RADIX 2 /* exponent radix */
63: #define _DBL_ROUNDS 1 /* addition rounding: near */
64:
65: #define FLT_DIG 6 /* # of decimal digits of precision */
66: #define FLT_EPSILON 1.192092896e-07F /* smallest such that 1.0+FLT_EPSILON != 1.0 */
67: #define FLT_GUARD 0
68: #define FLT_MANT_DIG 24 /* # of bits in mantissa */
69: #define FLT_MAX 3.402823466e+38F /* max value */
70: #define FLT_MAX_10_EXP 38 /* max decimal exponent */
71: #define FLT_MAX_EXP 128 /* max binary exponent */
72: #define FLT_MIN 1.175494351e-38F /* min positive value */
73: #define FLT_MIN_10_EXP (-37) /* min decimal exponent */
74: #define FLT_MIN_EXP (-125) /* min binary exponent */
75: #define FLT_NORMALIZE 0
76: #define FLT_RADIX 2 /* exponent radix */
77: #define FLT_ROUNDS 1 /* addition rounding: near */
78:
79: #define LDBL_DIG DBL_DIG /* # of decimal digits of precision */
80: #define LDBL_EPSILON DBL_EPSILON /* smallest such that 1.0+LDBL_EPSILON != 1.0 */
81: #define LDBL_MANT_DIG DBL_MANT_DIG /* # of bits in mantissa */
82: #define LDBL_MAX DBL_MAX /* max value */
83: #define LDBL_MAX_10_EXP DBL_MAX_10_EXP /* max decimal exponent */
84: #define LDBL_MAX_EXP DBL_MAX_EXP /* max binary exponent */
85: #define LDBL_MIN DBL_MIN /* min positive value */
86: #define LDBL_MIN_10_EXP DBL_MIN_10_EXP /* min decimal exponent */
87: #define LDBL_MIN_EXP DBL_MIN_EXP /* min binary exponent */
88: #define _LDBL_RADIX DBL_RADIX /* exponent radix */
89: #define _LDBL_ROUNDS DBL_ROUNDS /* addition rounding: near */
90:
91:
92:
1.1.1.2 root 93:
94: /* function prototypes */
95:
1.1.1.3 ! root 96: unsigned int _CRTAPI1 _clearfp(void);
! 97: unsigned int _CRTAPI1 _controlfp(unsigned int,unsigned int);
! 98: unsigned int _CRTAPI1 _statusfp(void);
! 99: void _CRTAPI1 _fpreset(void);
1.1.1.2 root 100:
101: #define _clear87 _clearfp
102: #define _status87 _statusfp
103:
1.1 root 104: /*
1.1.1.2 root 105: * Abstract User Control Word Mask and bit definitions
1.1 root 106: */
107:
1.1.1.2 root 108: #define _MCW_EM 0x0008001f /* interrupt Exception Masks */
109: #define _EM_INEXACT 0x00000001 /* inexact (precision) */
110: #define _EM_UNDERFLOW 0x00000002 /* underflow */
111: #define _EM_OVERFLOW 0x00000004 /* overflow */
112: #define _EM_ZERODIVIDE 0x00000008 /* zero divide */
113: #define _EM_INVALID 0x00000010 /* invalid */
114:
115: #define _MCW_RC 0x00000300 /* Rounding Control */
116: #define _RC_NEAR 0x00000000 /* near */
117: #define _RC_DOWN 0x00000100 /* down */
118: #define _RC_UP 0x00000200 /* up */
119: #define _RC_CHOP 0x00000300 /* chop */
1.1 root 120:
1.1.1.2 root 121: /*
122: * Abstract User Status Word bit definitions
1.1 root 123: */
124:
1.1.1.2 root 125: #define _SW_INEXACT 0x00000001 /* inexact (precision) */
126: #define _SW_UNDERFLOW 0x00000002 /* underflow */
127: #define _SW_OVERFLOW 0x00000004 /* overflow */
128: #define _SW_ZERODIVIDE 0x00000008 /* zero divide */
129: #define _SW_INVALID 0x00000010 /* invalid */
1.1 root 130:
131:
1.1.1.2 root 132: /*
133: * i386 specific definitions
134: */
1.1 root 135:
1.1.1.2 root 136: #define _MCW_PC 0x00030000 /* Precision Control */
137: #define _PC_64 0x00000000 /* 64 bits */
138: #define _PC_53 0x00010000 /* 53 bits */
139: #define _PC_24 0x00020000 /* 24 bits */
140:
141: #define _MCW_IC 0x00040000 /* Infinity Control */
142: #define _IC_AFFINE 0x00040000 /* affine */
143: #define _IC_PROJECTIVE 0x00000000 /* projective */
1.1 root 144:
1.1.1.2 root 145: #define _EM_DENORMAL 0x00080000 /* denormal exception mask (_control87 only) */
1.1 root 146:
1.1.1.2 root 147: #define _SW_DENORMAL 0x00080000 /* denormal status bit */
1.1 root 148:
149:
1.1.1.3 ! root 150: unsigned int _CRTAPI1 _control87(unsigned int,unsigned int);
1.1 root 151:
152:
1.1.1.2 root 153: /*
154: * MIPS R4000 specific definitions
155: */
156:
157: #define _MCW_DN 0x01000000 /* Denormal Control (R4000) */
158: #define _DN_FLUSH 0x01000000 /* flush to zero */
159: #define _DN_SAVE 0x00000000 /* save */
1.1 root 160:
161:
1.1.1.2 root 162: /* initial Control Word value */
163:
1.1.1.3 ! root 164: #ifdef _M_IX86
1.1.1.2 root 165:
166: #define _CW_DEFAULT ( _RC_NEAR + _PC_64 + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
167:
1.1.1.3 ! root 168: #elif ( defined(_M_RX000) || defined(M_MRX000) || defined(MIPS) || defined(MIPS) )
1.1.1.2 root 169:
170: #define _CW_DEFAULT ( _RC_NEAR + _DN_FLUSH + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
171:
172: #endif
173:
1.1 root 174: /* Global variable holding floating point error code */
175:
176: #ifdef _MT
1.1.1.3 ! root 177: extern int * _CRTAPI1 __fpecode(void);
1.1 root 178: #define _fpecode (*__fpecode())
179: #else
180: extern int _fpecode;
181: #endif
182:
1.1.1.2 root 183: /* invalid subconditions (_SW_INVALID also set) */
184:
185: #define _SW_UNEMULATED 0x0040 /* unemulated instruction */
186: #define _SW_SQRTNEG 0x0080 /* square root of a neg number */
187: #define _SW_STACKOVERFLOW 0x0200 /* FP stack overflow */
188: #define _SW_STACKUNDERFLOW 0x0400 /* FP stack underflow */
1.1 root 189:
190: /* Floating point error signals and return codes */
191:
192: #define _FPE_INVALID 0x81
193: #define _FPE_DENORMAL 0x82
194: #define _FPE_ZERODIVIDE 0x83
195: #define _FPE_OVERFLOW 0x84
196: #define _FPE_UNDERFLOW 0x85
197: #define _FPE_INEXACT 0x86
198:
199: #define _FPE_UNEMULATED 0x87
200: #define _FPE_SQRTNEG 0x88
201: #define _FPE_STACKOVERFLOW 0x8a
202: #define _FPE_STACKUNDERFLOW 0x8b
203:
204: #define _FPE_EXPLICITGEN 0x8c /* raise( SIGFPE ); */
205:
206:
1.1.1.2 root 207: /* IEEE recommended functions */
208:
1.1.1.3 ! root 209: double _CRTAPI1 _copysign (double, double);
! 210: double _CRTAPI1 _chgsign (double);
! 211: double _CRTAPI1 _scalb(double, long);
! 212: double _CRTAPI1 _logb(double);
! 213: double _CRTAPI1 _nextafter(double, double);
! 214: int _CRTAPI1 _finite(double);
! 215: int _CRTAPI1 _isnan(double);
! 216: int _CRTAPI1 _fpclass(double);
1.1.1.2 root 217:
218: #define _FPCLASS_SNAN 0x0001 /* signaling NaN */
219: #define _FPCLASS_QNAN 0x0002 /* quiet NaN */
220: #define _FPCLASS_NINF 0x0004 /* negative infinity */
221: #define _FPCLASS_NN 0x0008 /* negative normal */
222: #define _FPCLASS_ND 0x0010 /* negative denormal */
223: #define _FPCLASS_NZ 0x0020 /* -0 */
224: #define _FPCLASS_PZ 0x0040 /* +0 */
225: #define _FPCLASS_PD 0x0080 /* positive denormal */
226: #define _FPCLASS_PN 0x0100 /* positive normal */
227: #define _FPCLASS_PINF 0x0200 /* positive infinity */
1.1 root 228:
229:
230: #if !__STDC__
231: /* Non-ANSI names for compatibility */
232:
1.1.1.2 root 233: #define clear87 _clear87
234: #define status87 _status87
235: #define control87 _control87
236: #define fpreset _fpreset
237:
1.1 root 238: #define DBL_RADIX _DBL_RADIX
239: #define DBL_ROUNDS _DBL_ROUNDS
240:
241: #define LDBL_RADIX _LDBL_RADIX
242: #define LDBL_ROUNDS _LDBL_ROUNDS
243:
244: #define MCW_EM _MCW_EM
245: #define EM_INVALID _EM_INVALID
246: #define EM_DENORMAL _EM_DENORMAL
247: #define EM_ZERODIVIDE _EM_ZERODIVIDE
248: #define EM_OVERFLOW _EM_OVERFLOW
249: #define EM_UNDERFLOW _EM_UNDERFLOW
250: #define EM_INEXACT _EM_INEXACT
251:
252: #define MCW_IC _MCW_IC
253: #define IC_AFFINE _IC_AFFINE
254: #define IC_PROJECTIVE _IC_PROJECTIVE
255:
256: #define MCW_RC _MCW_RC
257: #define RC_CHOP _RC_CHOP
258: #define RC_UP _RC_UP
259: #define RC_DOWN _RC_DOWN
260: #define RC_NEAR _RC_NEAR
261:
262: #define MCW_PC _MCW_PC
263: #define PC_24 _PC_24
264: #define PC_53 _PC_53
265: #define PC_64 _PC_64
266:
267: #define CW_DEFAULT _CW_DEFAULT
268:
269: #define SW_INVALID _SW_INVALID
270: #define SW_DENORMAL _SW_DENORMAL
271: #define SW_ZERODIVIDE _SW_ZERODIVIDE
272: #define SW_OVERFLOW _SW_OVERFLOW
273: #define SW_UNDERFLOW _SW_UNDERFLOW
274: #define SW_INEXACT _SW_INEXACT
275:
276: #define SW_UNEMULATED _SW_UNEMULATED
277: #define SW_SQRTNEG _SW_SQRTNEG
278: #define SW_STACKOVERFLOW _SW_STACKOVERFLOW
279: #define SW_STACKUNDERFLOW _SW_STACKUNDERFLOW
280:
281: #define FPE_INVALID _FPE_INVALID
282: #define FPE_DENORMAL _FPE_DENORMAL
283: #define FPE_ZERODIVIDE _FPE_ZERODIVIDE
284: #define FPE_OVERFLOW _FPE_OVERFLOW
285: #define FPE_UNDERFLOW _FPE_UNDERFLOW
286: #define FPE_INEXACT _FPE_INEXACT
287:
288: #define FPE_UNEMULATED _FPE_UNEMULATED
289: #define FPE_SQRTNEG _FPE_SQRTNEG
290: #define FPE_STACKOVERFLOW _FPE_STACKOVERFLOW
291: #define FPE_STACKUNDERFLOW _FPE_STACKUNDERFLOW
292:
293: #define FPE_EXPLICITGEN _FPE_EXPLICITGEN
294:
295:
1.1.1.2 root 296: #endif /* __STDC__ */
1.1 root 297:
298: #ifdef __cplusplus
299: }
300: #endif
301:
302: #define _INC_FLOAT
303: #endif /* _INC_FLOAT */
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