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#ifndef _IEEE_FP_H_
#define _IEEE_FP_H_
 
#include "_ansi.h"
 
#include <machine/ieeefp.h>
 
_BEGIN_STD_C
 
/* FIXME FIXME FIXME:
   Neither of __ieee_{float,double}_shape_tape seem to be used anywhere
   except in libm/test.  If that is the case, please delete these from here.
   If that is not the case, please insert documentation here describing why
   they're needed.  */
 
#ifdef __IEEE_BIG_ENDIAN
 
typedef union
{
  double value;
  struct
  {
    unsigned int sign : 1;
    unsigned int exponent: 11;
    unsigned int fraction0:4;
    unsigned int fraction1:16;
    unsigned int fraction2:16;
    unsigned int fraction3:16;
 
  } number;
  struct
  {
    unsigned int sign : 1;
    unsigned int exponent: 11;
    unsigned int quiet:1;
    unsigned int function0:3;
    unsigned int function1:16;
    unsigned int function2:16;
    unsigned int function3:16;
  } nan;
  struct
  {
    unsigned long msw;
    unsigned long lsw;
  } parts;
    long aslong[2];
} __ieee_double_shape_type;
 
#endif
 
#ifdef __IEEE_LITTLE_ENDIAN
 
typedef union
{
  double value;
  struct
  {
#ifdef __SMALL_BITFIELDS
    unsigned int fraction3:16;
    unsigned int fraction2:16;
    unsigned int fraction1:16;
    unsigned int fraction0: 4;
#else
    unsigned int fraction1:32;
    unsigned int fraction0:20;
#endif
    unsigned int exponent :11;
    unsigned int sign     : 1;
  } number;
  struct
  {
#ifdef __SMALL_BITFIELDS
    unsigned int function3:16;
    unsigned int function2:16;
    unsigned int function1:16;
    unsigned int function0:3;
#else
    unsigned int function1:32;
    unsigned int function0:19;
#endif
    unsigned int quiet:1;
    unsigned int exponent: 11;
    unsigned int sign : 1;
  } nan;
  struct
  {
    unsigned long lsw;
    unsigned long msw;
  } parts;
 
  long aslong[2];
 
} __ieee_double_shape_type;
 
#endif
 
#ifdef __IEEE_BIG_ENDIAN
 
typedef union
{
  float value;
  struct
  {
    unsigned int sign : 1;
    unsigned int exponent: 8;
    unsigned int fraction0: 7;
    unsigned int fraction1: 16;
  } number;
  struct
  {
    unsigned int sign:1;
    unsigned int exponent:8;
    unsigned int quiet:1;
    unsigned int function0:6;
    unsigned int function1:16;
  } nan;
  long p1;
 
} __ieee_float_shape_type;
 
#endif
 
#ifdef __IEEE_LITTLE_ENDIAN
 
typedef union
{
  float value;
  struct
  {
    unsigned int fraction0: 7;
    unsigned int fraction1: 16;
    unsigned int exponent: 8;
    unsigned int sign : 1;
  } number;
  struct
  {
    unsigned int function1:16;
    unsigned int function0:6;
    unsigned int quiet:1;
    unsigned int exponent:8;
    unsigned int sign:1;
  } nan;
  long p1;
 
} __ieee_float_shape_type;
 
#endif
 
 
 
 
 
/* FLOATING ROUNDING */
 
typedef int fp_rnd;
#define FP_RN 0         /* Round to nearest             */
#define FP_RM 1         /* Round down                   */
#define FP_RP 2         /* Round up                     */
#define FP_RZ 3         /* Round to zero (trunate)      */
 
fp_rnd _EXFUN(fpgetround,(void));
fp_rnd _EXFUN(fpsetround, (fp_rnd));
 
/* EXCEPTIONS */
 
typedef int fp_except;
#define FP_X_INV 0x10   /* Invalid operation            */
#define FP_X_DX  0x80   /* Divide by zero               */
#define FP_X_OFL 0x04   /* Overflow exception           */
#define FP_X_UFL 0x02   /* Underflow exception          */
#define FP_X_IMP 0x01   /* imprecise exception          */
 
fp_except _EXFUN(fpgetmask,(void));
fp_except _EXFUN(fpsetmask,(fp_except));
fp_except _EXFUN(fpgetsticky,(void));
fp_except _EXFUN(fpsetsticky, (fp_except));
 
/* INTEGER ROUNDING */
 
typedef int fp_rdi;
#define FP_RDI_TOZ 0    /* Round to Zero                */
#define FP_RDI_RD  1    /* Follow float mode            */
 
fp_rdi _EXFUN(fpgetroundtoi,(void));
fp_rdi _EXFUN(fpsetroundtoi,(fp_rdi));
 
#undef isnan
#undef isinf
 
int _EXFUN(isnan, (double));
int _EXFUN(isinf, (double));
int _EXFUN(finite, (double));
 
 
 
int _EXFUN(isnanf, (float));
int _EXFUN(isinff, (float));
int _EXFUN(finitef, (float));
 
#define __IEEE_DBL_EXPBIAS 1023
#define __IEEE_FLT_EXPBIAS 127
 
#define __IEEE_DBL_EXPLEN 11
#define __IEEE_FLT_EXPLEN 8
 
 
#define __IEEE_DBL_FRACLEN (64 - (__IEEE_DBL_EXPLEN + 1))
#define __IEEE_FLT_FRACLEN (32 - (__IEEE_FLT_EXPLEN + 1))
 
#define __IEEE_DBL_MAXPOWTWO    ((double)(1L << 32 - 2) * (1L << (32-11) - 32 + 1))
#define __IEEE_FLT_MAXPOWTWO    ((float)(1L << (32-8) - 1))
 
#define __IEEE_DBL_NAN_EXP 0x7ff
#define __IEEE_FLT_NAN_EXP 0xff
 
#ifndef __ieeefp_isnanf
#define __ieeefp_isnanf(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) && \
                            ((*(long *)&(x) & 0x007fffffL)!=0000000000L))
#endif
#define isnanf(x)       __ieeefp_isnanf(x)
 
#ifndef __ieeefp_isinff
#define __ieeefp_isinff(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) && \
                            ((*(long *)&(x) & 0x007fffffL)==0000000000L))
#endif
#define isinff(x)       __ieeefp_isinff(x)
 
#ifndef __ieeefp_finitef
#define __ieeefp_finitef(x) (((*(long *)&(x) & 0x7f800000L)!=0x7f800000L))
#endif
#define finitef(x)      __ieeefp_finitef(x)
 
#ifdef _DOUBLE_IS_32BITS
#undef __IEEE_DBL_EXPBIAS
#define __IEEE_DBL_EXPBIAS __IEEE_FLT_EXPBIAS
 
#undef __IEEE_DBL_EXPLEN
#define __IEEE_DBL_EXPLEN __IEEE_FLT_EXPLEN
 
#undef __IEEE_DBL_FRACLEN
#define __IEEE_DBL_FRACLEN __IEEE_FLT_FRACLEN
 
#undef __IEEE_DBL_MAXPOWTWO
#define __IEEE_DBL_MAXPOWTWO __IEEE_FLT_MAXPOWTWO
 
#undef __IEEE_DBL_NAN_EXP
#define __IEEE_DBL_NAN_EXP __IEEE_FLT_NAN_EXP
 
#undef __ieee_double_shape_type
#define __ieee_double_shape_type __ieee_float_shape_type
 
#endif /* _DOUBLE_IS_32BITS */
 
_END_STD_C
 
#endif /* _IEEE_FP_H_ */

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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [include/] [ieeefp.h] - Blame information for rev 179

Line No.	Rev	Author	Line
1	148	jeremybenn	`#ifndef _IEEE_FP_H_`
2			`#define _IEEE_FP_H_`
3
4			`#include "_ansi.h"`
5
6			`#include <machine/ieeefp.h>`
7
8			`_BEGIN_STD_C`
9
10			`/* FIXME FIXME FIXME:`
11			`Neither of __ieee_{float,double}_shape_tape seem to be used anywhere`
12			`except in libm/test. If that is the case, please delete these from here.`
13			`If that is not the case, please insert documentation here describing why`
14			`they're needed. */`
15
16			`#ifdef __IEEE_BIG_ENDIAN`
17
18			`typedef union`
19			`{`
20			`double value;`
21			`struct`
22			`{`
23			`unsigned int sign : 1;`
24			`unsigned int exponent: 11;`
25			`unsigned int fraction0:4;`
26			`unsigned int fraction1:16;`
27			`unsigned int fraction2:16;`
28			`unsigned int fraction3:16;`
29
30			`} number;`
31			`struct`
32			`{`
33			`unsigned int sign : 1;`
34			`unsigned int exponent: 11;`
35			`unsigned int quiet:1;`
36			`unsigned int function0:3;`
37			`unsigned int function1:16;`
38			`unsigned int function2:16;`
39			`unsigned int function3:16;`
40			`} nan;`
41			`struct`
42			`{`
43			`unsigned long msw;`
44			`unsigned long lsw;`
45			`} parts;`
46			`long aslong[2];`
47			`} __ieee_double_shape_type;`
48
49			`#endif`
50
51			`#ifdef __IEEE_LITTLE_ENDIAN`
52
53			`typedef union`
54			`{`
55			`double value;`
56			`struct`
57			`{`
58			`#ifdef __SMALL_BITFIELDS`
59			`unsigned int fraction3:16;`
60			`unsigned int fraction2:16;`
61			`unsigned int fraction1:16;`
62			`unsigned int fraction0: 4;`
63			`#else`
64			`unsigned int fraction1:32;`
65			`unsigned int fraction0:20;`
66			`#endif`
67			`unsigned int exponent :11;`
68			`unsigned int sign : 1;`
69			`} number;`
70			`struct`
71			`{`
72			`#ifdef __SMALL_BITFIELDS`
73			`unsigned int function3:16;`
74			`unsigned int function2:16;`
75			`unsigned int function1:16;`
76			`unsigned int function0:3;`
77			`#else`
78			`unsigned int function1:32;`
79			`unsigned int function0:19;`
80			`#endif`
81			`unsigned int quiet:1;`
82			`unsigned int exponent: 11;`
83			`unsigned int sign : 1;`
84			`} nan;`
85			`struct`
86			`{`
87			`unsigned long lsw;`
88			`unsigned long msw;`
89			`} parts;`
90
91			`long aslong[2];`
92
93			`} __ieee_double_shape_type;`
94
95			`#endif`
96
97			`#ifdef __IEEE_BIG_ENDIAN`
98
99			`typedef union`
100			`{`
101			`float value;`
102			`struct`
103			`{`
104			`unsigned int sign : 1;`
105			`unsigned int exponent: 8;`
106			`unsigned int fraction0: 7;`
107			`unsigned int fraction1: 16;`
108			`} number;`
109			`struct`
110			`{`
111			`unsigned int sign:1;`
112			`unsigned int exponent:8;`
113			`unsigned int quiet:1;`
114			`unsigned int function0:6;`
115			`unsigned int function1:16;`
116			`} nan;`
117			`long p1;`
118
119			`} __ieee_float_shape_type;`
120
121			`#endif`
122
123			`#ifdef __IEEE_LITTLE_ENDIAN`
124
125			`typedef union`
126			`{`
127			`float value;`
128			`struct`
129			`{`
130			`unsigned int fraction0: 7;`
131			`unsigned int fraction1: 16;`
132			`unsigned int exponent: 8;`
133			`unsigned int sign : 1;`
134			`} number;`
135			`struct`
136			`{`
137			`unsigned int function1:16;`
138			`unsigned int function0:6;`
139			`unsigned int quiet:1;`
140			`unsigned int exponent:8;`
141			`unsigned int sign:1;`
142			`} nan;`
143			`long p1;`
144
145			`} __ieee_float_shape_type;`
146
147			`#endif`
148
149
150
151
152
153			`/* FLOATING ROUNDING */`
154
155			`typedef int fp_rnd;`
156			`#define FP_RN 0 /* Round to nearest */`
157			`#define FP_RM 1 /* Round down */`
158			`#define FP_RP 2 /* Round up */`
159			`#define FP_RZ 3 /* Round to zero (trunate) */`
160
161			`fp_rnd _EXFUN(fpgetround,(void));`
162			`fp_rnd _EXFUN(fpsetround, (fp_rnd));`
163
164			`/* EXCEPTIONS */`
165
166			`typedef int fp_except;`
167			`#define FP_X_INV 0x10 /* Invalid operation */`
168			`#define FP_X_DX 0x80 /* Divide by zero */`
169			`#define FP_X_OFL 0x04 /* Overflow exception */`
170			`#define FP_X_UFL 0x02 /* Underflow exception */`
171			`#define FP_X_IMP 0x01 /* imprecise exception */`
172
173			`fp_except _EXFUN(fpgetmask,(void));`
174			`fp_except _EXFUN(fpsetmask,(fp_except));`
175			`fp_except _EXFUN(fpgetsticky,(void));`
176			`fp_except _EXFUN(fpsetsticky, (fp_except));`
177
178			`/* INTEGER ROUNDING */`
179
180			`typedef int fp_rdi;`
181			`#define FP_RDI_TOZ 0 /* Round to Zero */`
182			`#define FP_RDI_RD 1 /* Follow float mode */`
183
184			`fp_rdi _EXFUN(fpgetroundtoi,(void));`
185			`fp_rdi _EXFUN(fpsetroundtoi,(fp_rdi));`
186
187			`#undef isnan`
188			`#undef isinf`
189
190			`int _EXFUN(isnan, (double));`
191			`int _EXFUN(isinf, (double));`
192			`int _EXFUN(finite, (double));`
193
194
195
196			`int _EXFUN(isnanf, (float));`
197			`int _EXFUN(isinff, (float));`
198			`int _EXFUN(finitef, (float));`
199
200			`#define __IEEE_DBL_EXPBIAS 1023`
201			`#define __IEEE_FLT_EXPBIAS 127`
202
203			`#define __IEEE_DBL_EXPLEN 11`
204			`#define __IEEE_FLT_EXPLEN 8`
205
206
207			`#define __IEEE_DBL_FRACLEN (64 - (__IEEE_DBL_EXPLEN + 1))`
208			`#define __IEEE_FLT_FRACLEN (32 - (__IEEE_FLT_EXPLEN + 1))`
209
210			`#define __IEEE_DBL_MAXPOWTWO ((double)(1L << 32 - 2) * (1L << (32-11) - 32 + 1))`
211			`#define __IEEE_FLT_MAXPOWTWO ((float)(1L << (32-8) - 1))`
212
213			`#define __IEEE_DBL_NAN_EXP 0x7ff`
214			`#define __IEEE_FLT_NAN_EXP 0xff`
215
216			`#ifndef __ieeefp_isnanf`
217			`#define __ieeefp_isnanf(x) ((((long )&(x) & 0x7f800000L)==0x7f800000L) && \`
218			`(((long )&(x) & 0x007fffffL)!=0000000000L))`
219			`#endif`
220			`#define isnanf(x) __ieeefp_isnanf(x)`
221
222			`#ifndef __ieeefp_isinff`
223			`#define __ieeefp_isinff(x) ((((long )&(x) & 0x7f800000L)==0x7f800000L) && \`
224			`(((long )&(x) & 0x007fffffL)==0000000000L))`
225			`#endif`
226			`#define isinff(x) __ieeefp_isinff(x)`
227
228			`#ifndef __ieeefp_finitef`
229			`#define __ieeefp_finitef(x) ((((long )&(x) & 0x7f800000L)!=0x7f800000L))`
230			`#endif`
231			`#define finitef(x) __ieeefp_finitef(x)`
232
233			`#ifdef _DOUBLE_IS_32BITS`
234			`#undef __IEEE_DBL_EXPBIAS`
235			`#define __IEEE_DBL_EXPBIAS __IEEE_FLT_EXPBIAS`
236
237			`#undef __IEEE_DBL_EXPLEN`
238			`#define __IEEE_DBL_EXPLEN __IEEE_FLT_EXPLEN`
239
240			`#undef __IEEE_DBL_FRACLEN`
241			`#define __IEEE_DBL_FRACLEN __IEEE_FLT_FRACLEN`
242
243			`#undef __IEEE_DBL_MAXPOWTWO`
244			`#define __IEEE_DBL_MAXPOWTWO __IEEE_FLT_MAXPOWTWO`
245
246			`#undef __IEEE_DBL_NAN_EXP`
247			`#define __IEEE_DBL_NAN_EXP __IEEE_FLT_NAN_EXP`
248
249			`#undef __ieee_double_shape_type`
250			`#define __ieee_double_shape_type __ieee_float_shape_type`
251
252			`#endif /* _DOUBLE_IS_32BITS */`
253
254			`_END_STD_C`
255
256			`#endif /* _IEEE_FP_H_ */`