1 | #ifndef _FENV_H |
---|---|
2 | #include <math/fenv.h> |
3 | |
4 | #ifndef _ISOMAC |
5 | # include <stdbool.h> |
6 | /* Now define the internal interfaces. */ |
7 | |
8 | extern int __feclearexcept (int __excepts); |
9 | extern int __fegetexcept (void); |
10 | extern int __fegetexceptflag (fexcept_t *__flagp, int __excepts); |
11 | extern int __feraiseexcept (int __excepts); |
12 | extern int __fesetexceptflag (const fexcept_t *__flagp, int __excepts); |
13 | extern int __fegetenv (fenv_t *__envp); |
14 | extern int __fesetenv (const fenv_t *__envp); |
15 | extern int __feupdateenv (const fenv_t *__envp); |
16 | extern __typeof (fegetround) __fegetround __attribute_pure__; |
17 | extern __typeof (feholdexcept) __feholdexcept; |
18 | extern __typeof (fesetround) __fesetround; |
19 | |
20 | libm_hidden_proto (feraiseexcept) |
21 | libm_hidden_proto (__feraiseexcept) |
22 | libm_hidden_proto (fegetenv) |
23 | libm_hidden_proto (__fegetenv) |
24 | libm_hidden_proto (fegetround) |
25 | libm_hidden_proto (__fegetround) |
26 | libm_hidden_proto (fesetenv) |
27 | libm_hidden_proto (__fesetenv) |
28 | libm_hidden_proto (fesetround) |
29 | libm_hidden_proto (__fesetround) |
30 | libm_hidden_proto (feholdexcept) |
31 | libm_hidden_proto (__feholdexcept) |
32 | libm_hidden_proto (feupdateenv) |
33 | libm_hidden_proto (__feupdateenv) |
34 | libm_hidden_proto (fetestexcept) |
35 | libm_hidden_proto (feclearexcept) |
36 | |
37 | /* Rounding mode context. This allows functions to set/restore rounding mode |
38 | only when the desired rounding mode is different from the current rounding |
39 | mode. */ |
40 | struct rm_ctx |
41 | { |
42 | fenv_t env; |
43 | bool updated_status; |
44 | }; |
45 | |
46 | /* Track whether rounding mode macros were defined, since |
47 | get-rounding-mode.h may define default versions if they weren't. |
48 | FE_TONEAREST must always be defined (even if no changes of rounding |
49 | mode are supported, glibc requires it to be defined to represent |
50 | the default rounding mode). */ |
51 | # ifndef FE_TONEAREST |
52 | # error "FE_TONEAREST not defined" |
53 | # endif |
54 | # if defined FE_DOWNWARD || defined FE_TOWARDZERO || defined FE_UPWARD |
55 | # define FE_HAVE_ROUNDING_MODES 1 |
56 | # else |
57 | # define FE_HAVE_ROUNDING_MODES 0 |
58 | # endif |
59 | |
60 | #endif |
61 | |
62 | #endif |
63 |