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Macros | Functions
float.h File Reference
#include <crtdefs.h>
Include dependency graph for float.h:

Go to the source code of this file.

Macros

#define _MCW_EM   0x0008001F /* Error masks */
 
#define _MCW_IC   0x00040000 /* Infinity */
 
#define _MCW_RC   0x00000300 /* Rounding */
 
#define _MCW_PC   0x00030000 /* Precision */
 
#define _MCW_DN   0x03000000 /* Denormal */
 
#define _EM_INVALID   0x00000010
 
#define _EM_DENORMAL   0x00080000
 
#define _EM_ZERODIVIDE   0x00000008
 
#define _EM_OVERFLOW   0x00000004
 
#define _EM_UNDERFLOW   0x00000002
 
#define _EM_INEXACT   0x00000001
 
#define _IC_AFFINE   0x00040000
 
#define _IC_PROJECTIVE   0x00000000
 
#define _RC_CHOP   0x00000300
 
#define _RC_UP   0x00000200
 
#define _RC_DOWN   0x00000100
 
#define _RC_NEAR   0x00000000
 
#define _PC_24   0x00020000
 
#define _PC_53   0x00010000
 
#define _PC_64   0x00000000
 
#define _DN_SAVE   0x00000000
 
#define _DN_FLUSH   0x01000000
 
#define _DN_FLUSH_OPERANDS_SAVE_RESULTS   0x02000000
 
#define _DN_SAVE_OPERANDS_FLUSH_RESULTS   0x03000000
 
#define __MINGW_FPCLASS_DEFINED   1
 
#define _FPCLASS_SNAN   0x0001 /* Signaling "Not a Number" */
 
#define _FPCLASS_QNAN   0x0002 /* Quiet "Not a Number" */
 
#define _FPCLASS_NINF   0x0004 /* Negative Infinity */
 
#define _FPCLASS_NN   0x0008 /* Negative Normal */
 
#define _FPCLASS_ND   0x0010 /* Negative Denormal */
 
#define _FPCLASS_NZ   0x0020 /* Negative Zero */
 
#define _FPCLASS_PZ   0x0040 /* Positive Zero */
 
#define _FPCLASS_PD   0x0080 /* Positive Denormal */
 
#define _FPCLASS_PN   0x0100 /* Positive Normal */
 
#define _FPCLASS_PINF   0x0200 /* Positive Infinity */
 
#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 _SW_DENORMAL   0x00080000 /* denormal status bit */
 
#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 */
 
#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 /* raise( SIGFPE ); */
 
#define _clear87   _clearfp
 
#define _status87   _statusfp
 
#define _fpecode   (*(__fpecode()))
 

Functions

__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _controlfp (_In_ unsigned int unNew, _In_ unsigned int unMask)
 
__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _control87 (_In_ unsigned int unNew, _In_ unsigned int unMask)
 
__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _clearfp (void)
 
__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _statusfp (void)
 
__MINGW_NOTHROW void __cdecl _fpreset (void)
 
__MINGW_NOTHROW void __cdecl fpreset (void)
 
__MINGW_NOTHROW _CRTIMP int *__cdecl __fpecode (void)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _chgsign (_In_ double)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _copysign (_In_ double, _In_ double)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _logb (_In_ double)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _nextafter (_In_ double, _In_ double)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _scalb (_In_ double, _In_ long)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP int __cdecl _finite (_In_ double)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP int __cdecl _fpclass (_In_ double)
 
_Check_return_ __MINGW_NOTHROW _CRTIMP int __cdecl _isnan (_In_ double)
 

Macro Definition Documentation

◆ __MINGW_FPCLASS_DEFINED

#define __MINGW_FPCLASS_DEFINED   1

Definition at line 71 of file float.h.

◆ _clear87

#define _clear87   _clearfp

Definition at line 139 of file float.h.

◆ _DN_FLUSH

#define _DN_FLUSH   0x01000000

Definition at line 63 of file float.h.

◆ _DN_FLUSH_OPERANDS_SAVE_RESULTS

#define _DN_FLUSH_OPERANDS_SAVE_RESULTS   0x02000000

Definition at line 64 of file float.h.

◆ _DN_SAVE

#define _DN_SAVE   0x00000000

Definition at line 62 of file float.h.

◆ _DN_SAVE_OPERANDS_FLUSH_RESULTS

#define _DN_SAVE_OPERANDS_FLUSH_RESULTS   0x03000000

Definition at line 65 of file float.h.

◆ _EM_DENORMAL

#define _EM_DENORMAL   0x00080000

Definition at line 48 of file float.h.

◆ _EM_INEXACT

#define _EM_INEXACT   0x00000001

Definition at line 52 of file float.h.

◆ _EM_INVALID

#define _EM_INVALID   0x00000010

Definition at line 47 of file float.h.

◆ _EM_OVERFLOW

#define _EM_OVERFLOW   0x00000004

Definition at line 50 of file float.h.

◆ _EM_UNDERFLOW

#define _EM_UNDERFLOW   0x00000002

Definition at line 51 of file float.h.

◆ _EM_ZERODIVIDE

#define _EM_ZERODIVIDE   0x00000008

Definition at line 49 of file float.h.

◆ _FPCLASS_ND

#define _FPCLASS_ND   0x0010 /* Negative Denormal */

Definition at line 76 of file float.h.

◆ _FPCLASS_NINF

#define _FPCLASS_NINF   0x0004 /* Negative Infinity */

Definition at line 74 of file float.h.

◆ _FPCLASS_NN

#define _FPCLASS_NN   0x0008 /* Negative Normal */

Definition at line 75 of file float.h.

◆ _FPCLASS_NZ

#define _FPCLASS_NZ   0x0020 /* Negative Zero */

Definition at line 77 of file float.h.

◆ _FPCLASS_PD

#define _FPCLASS_PD   0x0080 /* Positive Denormal */

Definition at line 79 of file float.h.

◆ _FPCLASS_PINF

#define _FPCLASS_PINF   0x0200 /* Positive Infinity */

Definition at line 81 of file float.h.

◆ _FPCLASS_PN

#define _FPCLASS_PN   0x0100 /* Positive Normal */

Definition at line 80 of file float.h.

◆ _FPCLASS_PZ

#define _FPCLASS_PZ   0x0040 /* Positive Zero */

Definition at line 78 of file float.h.

◆ _FPCLASS_QNAN

#define _FPCLASS_QNAN   0x0002 /* Quiet "Not a Number" */

Definition at line 73 of file float.h.

◆ _FPCLASS_SNAN

#define _FPCLASS_SNAN   0x0001 /* Signaling "Not a Number" */

Definition at line 72 of file float.h.

◆ _FPE_DENORMAL

#define _FPE_DENORMAL   0x82

Definition at line 100 of file float.h.

◆ _FPE_EXPLICITGEN

#define _FPE_EXPLICITGEN   0x8c /* raise( SIGFPE ); */

Definition at line 109 of file float.h.

◆ _FPE_INEXACT

#define _FPE_INEXACT   0x86

Definition at line 104 of file float.h.

◆ _FPE_INVALID

#define _FPE_INVALID   0x81

Definition at line 99 of file float.h.

◆ _FPE_OVERFLOW

#define _FPE_OVERFLOW   0x84

Definition at line 102 of file float.h.

◆ _FPE_SQRTNEG

#define _FPE_SQRTNEG   0x88

Definition at line 106 of file float.h.

◆ _FPE_STACKOVERFLOW

#define _FPE_STACKOVERFLOW   0x8a

Definition at line 107 of file float.h.

◆ _FPE_STACKUNDERFLOW

#define _FPE_STACKUNDERFLOW   0x8b

Definition at line 108 of file float.h.

◆ _FPE_UNDERFLOW

#define _FPE_UNDERFLOW   0x85

Definition at line 103 of file float.h.

◆ _FPE_UNEMULATED

#define _FPE_UNEMULATED   0x87

Definition at line 105 of file float.h.

◆ _FPE_ZERODIVIDE

#define _FPE_ZERODIVIDE   0x83

Definition at line 101 of file float.h.

◆ _fpecode

#define _fpecode   (*(__fpecode()))

Definition at line 157 of file float.h.

◆ _IC_AFFINE

#define _IC_AFFINE   0x00040000

Definition at line 53 of file float.h.

◆ _IC_PROJECTIVE

#define _IC_PROJECTIVE   0x00000000

Definition at line 54 of file float.h.

◆ _MCW_DN

#define _MCW_DN   0x03000000 /* Denormal */

Definition at line 44 of file float.h.

◆ _MCW_EM

#define _MCW_EM   0x0008001F /* Error masks */

Definition at line 40 of file float.h.

◆ _MCW_IC

#define _MCW_IC   0x00040000 /* Infinity */

Definition at line 41 of file float.h.

◆ _MCW_PC

#define _MCW_PC   0x00030000 /* Precision */

Definition at line 43 of file float.h.

◆ _MCW_RC

#define _MCW_RC   0x00000300 /* Rounding */

Definition at line 42 of file float.h.

◆ _PC_24

#define _PC_24   0x00020000

Definition at line 59 of file float.h.

◆ _PC_53

#define _PC_53   0x00010000

Definition at line 60 of file float.h.

◆ _PC_64

#define _PC_64   0x00000000

Definition at line 61 of file float.h.

◆ _RC_CHOP

#define _RC_CHOP   0x00000300

Definition at line 55 of file float.h.

◆ _RC_DOWN

#define _RC_DOWN   0x00000100

Definition at line 57 of file float.h.

◆ _RC_NEAR

#define _RC_NEAR   0x00000000

Definition at line 58 of file float.h.

◆ _RC_UP

#define _RC_UP   0x00000200

Definition at line 56 of file float.h.

◆ _status87

#define _status87   _statusfp

Definition at line 140 of file float.h.

◆ _SW_DENORMAL

#define _SW_DENORMAL   0x00080000 /* denormal status bit */

Definition at line 90 of file float.h.

◆ _SW_INEXACT

#define _SW_INEXACT   0x00000001 /* inexact (precision) */

Definition at line 85 of file float.h.

◆ _SW_INVALID

#define _SW_INVALID   0x00000010 /* invalid */

Definition at line 89 of file float.h.

◆ _SW_OVERFLOW

#define _SW_OVERFLOW   0x00000004 /* overflow */

Definition at line 87 of file float.h.

◆ _SW_SQRTNEG

#define _SW_SQRTNEG   0x0080 /* square root of a neg number */

Definition at line 94 of file float.h.

◆ _SW_STACKOVERFLOW

#define _SW_STACKOVERFLOW   0x0200 /* FP stack overflow */

Definition at line 95 of file float.h.

◆ _SW_STACKUNDERFLOW

#define _SW_STACKUNDERFLOW   0x0400 /* FP stack underflow */

Definition at line 96 of file float.h.

◆ _SW_UNDERFLOW

#define _SW_UNDERFLOW   0x00000002 /* underflow */

Definition at line 86 of file float.h.

◆ _SW_UNEMULATED

#define _SW_UNEMULATED   0x0040 /* unemulated instruction */

Definition at line 93 of file float.h.

◆ _SW_ZERODIVIDE

#define _SW_ZERODIVIDE   0x00000008 /* zero divide */

Definition at line 88 of file float.h.

Function Documentation

◆ __fpecode()

__MINGW_NOTHROW _CRTIMP int* __cdecl __fpecode ( void  )

Definition at line 16 of file fpecode.c.

17 {
18  return &msvcrt_get_thread_data()->fpecode;
19 }
msvcrt_get_thread_data
thread_data_t * msvcrt_get_thread_data(void)
Definition: tls.c:31

◆ _chgsign()

_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _chgsign ( _In_ double  )

Referenced by _chgsignf().

◆ _clearfp()

__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _clearfp ( void  )

Definition at line 11 of file _clearfp.c.

12 {
13  unsigned int retval;
14 
15  /* Get current status value */
16  retval = _statusfp();
17 
18  /* Clear the exception mask */
19  _mm_setcsr(_mm_getcsr() & ~_MM_EXCEPT_MASK);
20 
21  /* Return the previous state */
22  return retval;
23 }
_statusfp
__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _statusfp(void)
Definition: _statusfp.c:11
_mm_getcsr
unsigned int _mm_getcsr(void)
Definition: xmmintrin.h:535
_mm_setcsr
void _mm_setcsr(unsigned int a)
Definition: xmmintrin.h:542
_MM_EXCEPT_MASK
#define _MM_EXCEPT_MASK
Definition: xmmintrin.h:93

Referenced by main(), and Test_exceptions().

◆ _control87()

__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _control87 ( _In_ unsigned int  unNew,
_In_ unsigned int  unMask 
)

◆ _controlfp()

__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _controlfp ( _In_ unsigned int  unNew,
_In_ unsigned int  unMask 
)

Referenced by __declspec(), main(), START_TEST(), Test_controlfp(), and Test_exceptions().

◆ _copysign()

_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _copysign ( _In_ double  ,
_In_ double   
)

Referenced by _copysignf().

◆ _finite()

_Check_return_ __MINGW_NOTHROW _CRTIMP int __cdecl _finite ( _In_ double  )

Referenced by _j0(), _j1(), _y0(), _y1(), _yn(), format_float(), MSVCRT_I10_OUTPUT(), rpn_exp(), rpn_exp10(), rpn_exp2(), rpn_exp3(), rpn_fact(), rpn_pow_f(), rpn_sqr_f(), run_operator(), and test_finite().

◆ _fpclass()

_Check_return_ __MINGW_NOTHROW _CRTIMP int __cdecl _fpclass ( _In_ double  )

Referenced by _y0(), _y1(), and test_fpclass().

◆ _fpreset()

__MINGW_NOTHROW void __cdecl _fpreset ( void  )

Definition at line 10 of file _fpreset.c.

11 {
12  /* Mask everything */
13  _mm_setcsr(_MM_MASK_MASK);
14 }
_mm_setcsr
void _mm_setcsr(unsigned int a)
Definition: xmmintrin.h:542
_MM_MASK_MASK
#define _MM_MASK_MASK
Definition: xmmintrin.h:101

Referenced by START_TEST(), Test_controlfp(), and Test_exceptions().

◆ _isnan()

_Check_return_ __MINGW_NOTHROW _CRTIMP int __cdecl _isnan ( _In_ double  )

Referenced by _nextafter(), format_float(), ldexp(), MSVCRT_I10_OUTPUT(), rpn_acos(), rpn_acosh(), rpn_asin(), rpn_asinh(), rpn_atan(), rpn_atanh(), rpn_cosh(), rpn_pow_f(), rpn_sinh(), rpn_sqr_f(), rpn_tanh(), test_isnan(), and TRIO_ARGS1().

◆ _logb()

_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _logb ( _In_ double  )

◆ _nextafter()

_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _nextafter ( _In_ double  ,
_In_ double   
)

◆ _scalb()

_Check_return_ __MINGW_NOTHROW _CRTIMP double __cdecl _scalb ( _In_ double  ,
_In_ long   
)

Referenced by test_scalb().

◆ _statusfp()

__MINGW_NOTHROW _CRTIMP unsigned int __cdecl _statusfp ( void  )

Definition at line 11 of file _statusfp.c.

12 {
13  unsigned int mxcsr, status = 0;
14 
15  /* Get MXCSR */
16  mxcsr = _mm_getcsr();
17 
18  /* Convert to abstract status flags */
19  if (mxcsr & _MM_EXCEPT_INVALID)
20  status |= _SW_INVALID;
21  if (mxcsr & _MM_EXCEPT_DENORM)
22  status |= _SW_DENORMAL;
23  if (mxcsr & _MM_EXCEPT_DIV_ZERO)
24  status |= _SW_ZERODIVIDE;
25  if (mxcsr & _MM_EXCEPT_OVERFLOW)
26  status |= _SW_OVERFLOW;
27  if (mxcsr & _MM_EXCEPT_UNDERFLOW)
28  status |= _SW_UNDERFLOW;
29  if (mxcsr & _MM_EXCEPT_INEXACT)
30  status |= _SW_INEXACT;
31 
32  return status;
33 }
_mm_getcsr
unsigned int _mm_getcsr(void)
Definition: xmmintrin.h:535
_MM_EXCEPT_DIV_ZERO
#define _MM_EXCEPT_DIV_ZERO
Definition: xmmintrin.h:96
_MM_EXCEPT_DENORM
#define _MM_EXCEPT_DENORM
Definition: xmmintrin.h:95
_SW_DENORMAL
#define _SW_DENORMAL
Definition: float.h:90
_SW_INVALID
#define _SW_INVALID
Definition: float.h:89
_SW_UNDERFLOW
#define _SW_UNDERFLOW
Definition: float.h:86
_MM_EXCEPT_UNDERFLOW
#define _MM_EXCEPT_UNDERFLOW
Definition: xmmintrin.h:98
_MM_EXCEPT_INVALID
#define _MM_EXCEPT_INVALID
Definition: xmmintrin.h:94
_MM_EXCEPT_OVERFLOW
#define _MM_EXCEPT_OVERFLOW
Definition: xmmintrin.h:97
_SW_INEXACT
#define _SW_INEXACT
Definition: float.h:85
_MM_EXCEPT_INEXACT
#define _MM_EXCEPT_INEXACT
Definition: xmmintrin.h:99
_SW_OVERFLOW
#define _SW_OVERFLOW
Definition: float.h:87
_SW_ZERODIVIDE
#define _SW_ZERODIVIDE
Definition: float.h:88
status
static SERVICE_STATUS status
Definition: service.c:31
status
Definition: ps.c:97

Referenced by _clearfp(), START_TEST(), and Test_exceptions().

◆ fpreset()

__MINGW_NOTHROW void __cdecl fpreset ( void  )