fenv.c revision 25c28e83beb90e7c80452a7c818c5e6f73a07dc8
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER START
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You may not use this file except in compliance with the License.
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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Use is subject to license terms.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak fex_merge_flags = __fex_merge_flags
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak feholdexcept = __feholdexcept
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak feupdateenv = __feupdateenv
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak fegetenv = __fegetenv
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak fesetenv = __fesetenv
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak feholdexcept96 = __feholdexcept96
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak feupdateenv96 = __feupdateenv
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak fegetenv96 = __fegetenv
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma weak fesetenv96 = __fesetenv
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include "fenv_synonyms.h"
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <fenv.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <ucontext.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <thread.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include "fex_handler.h"
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include "fenv_inlines.h"
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisconst fenv_t __fenv_dfl_env = {
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis {
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis { FEX_NONSTOP, (void(*)())0 },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis },
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#ifdef __x86
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis 0x13000000
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#else
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis 0
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#endif
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis};
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint feholdexcept(fenv_t *p)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) fegetenv(p);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) feclearexcept(FE_ALL_EXCEPT);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return !fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint feholdexcept96(fenv_t *p)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) fegetenv(p);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) feclearexcept(FE_ALL_EXCEPT);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return fex_set_handling(FEX_ALL, FEX_NONSTOP, NULL);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint feupdateenv(const fenv_t *p)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis unsigned long fsr;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fenv_getfsr(&fsr);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) fesetenv(p);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) feraiseexcept((int)__fenv_get_ex(fsr));
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return 0;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint fegetenv(fenv_t *p)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis fex_getexcepthandler(&p->__handlers, FEX_ALL);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fenv_getfsr(&p->__fsr);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return 0;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint fesetenv(const fenv_t *p)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fenv_setfsr(&p->__fsr);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis fex_setexcepthandler(&p->__handlers, FEX_ALL);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return 0;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisvoid fex_merge_flags(const fenv_t *p)
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis unsigned long fsr;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fenv_getfsr(&fsr);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fenv_set_ex(fsr, __fenv_get_ex(fsr) | __fenv_get_ex(p->__fsr));
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fenv_setfsr(&fsr);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (fex_get_log())
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis __fex_update_te();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis}