--- /dev/null
+/*-
+ * Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FENV_H_
+#define _FENV_H_
+
+#include <sys/types.h>
+
+#ifndef __fenv_static
+#define __fenv_static static
+#endif
+
+typedef __uint32_t fenv_t;
+typedef __uint32_t fexcept_t;
+
+/* Exception flags */
+#ifdef SOFTFLOAT
+#define _FPUSW_SHIFT 16
+#define FE_INVALID 0x0001
+#define FE_DIVBYZERO 0x0002
+#define FE_OVERFLOW 0x0004
+#define FE_UNDERFLOW 0x0008
+#define FE_INEXACT 0x0010
+#else
+#define _FCSR_CAUSE_SHIFT 10
+#define FE_INVALID 0x0040
+#define FE_DIVBYZERO 0x0020
+#define FE_OVERFLOW 0x0010
+#define FE_UNDERFLOW 0x0008
+#define FE_INEXACT 0x0004
+#endif
+#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
+ FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
+
+/* Rounding modes */
+#define FE_TONEAREST 0x0000
+#define FE_TOWARDZERO 0x0001
+#define FE_UPWARD 0x0002
+#define FE_DOWNWARD 0x0003
+#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
+ FE_UPWARD | FE_TOWARDZERO)
+__BEGIN_DECLS
+
+/* Default floating-point environment */
+extern const fenv_t __fe_dfl_env;
+#define FE_DFL_ENV (&__fe_dfl_env)
+
+/* We need to be able to map status flag positions to mask flag positions */
+#define _ENABLE_SHIFT 5
+#define _ENABLE_MASK (FE_ALL_EXCEPT << _ENABLE_SHIFT)
+
+#ifndef SOFTFLOAT
+#define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r" (__fcsr))
+#define __ctc1(__fcsr) __asm __volatile("ctc1 %0, $31" :: "r" (__fcsr))
+#endif
+
+#ifdef SOFTFLOAT
+int feclearexcept(int __excepts);
+int fegetexceptflag(fexcept_t *__flagp, int __excepts);
+int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
+int feraiseexcept(int __excepts);
+int fetestexcept(int __excepts);
+int fegetround(void);
+int fesetround(int __round);
+int fegetenv(fenv_t *__envp);
+int feholdexcept(fenv_t *__envp);
+int fesetenv(const fenv_t *__envp);
+int feupdateenv(const fenv_t *__envp);
+#else
+__fenv_static inline int
+feclearexcept(int __excepts)
+{
+ fexcept_t fcsr;
+
+ __excepts &= FE_ALL_EXCEPT;
+ __cfc1(fcsr);
+ fcsr &= ~(__excepts | (__excepts << _FCSR_CAUSE_SHIFT));
+ __ctc1(fcsr);
+
+ return (0);
+}
+
+__fenv_static inline int
+fegetexceptflag(fexcept_t *__flagp, int __excepts)
+{
+ fexcept_t fcsr;
+
+ __excepts &= FE_ALL_EXCEPT;
+ __cfc1(fcsr);
+ *__flagp = fcsr & __excepts;
+
+ return (0);
+}
+
+__fenv_static inline int
+fesetexceptflag(const fexcept_t *__flagp, int __excepts)
+{
+ fexcept_t fcsr;
+
+ __excepts &= FE_ALL_EXCEPT;
+ __cfc1(fcsr);
+ fcsr &= ~__excepts;
+ fcsr |= *__flagp & __excepts;
+ __ctc1(fcsr);
+
+ return (0);
+}
+
+__fenv_static inline int
+feraiseexcept(int __excepts)
+{
+ fexcept_t fcsr;
+
+ __excepts &= FE_ALL_EXCEPT;
+ __cfc1(fcsr);
+ fcsr |= __excepts | (__excepts << _FCSR_CAUSE_SHIFT);
+ __ctc1(fcsr);
+
+ return (0);
+}
+
+__fenv_static inline int
+fetestexcept(int __excepts)
+{
+ fexcept_t fcsr;
+
+ __excepts &= FE_ALL_EXCEPT;
+ __cfc1(fcsr);
+
+ return (fcsr & __excepts);
+}
+
+__fenv_static inline int
+fegetround(void)
+{
+ fexcept_t fcsr;
+
+ __cfc1(fcsr);
+
+ return (fcsr & _ROUND_MASK);
+}
+
+__fenv_static inline int
+fesetround(int __round)
+{
+ fexcept_t fcsr;
+
+ if (__round & ~_ROUND_MASK)
+ return (-1);
+
+ __cfc1(fcsr);
+ fcsr &= ~_ROUND_MASK;
+ fcsr |= __round;
+ __ctc1(fcsr);
+
+ return (0);
+}
+
+__fenv_static inline int
+fegetenv(fenv_t *__envp)
+{
+
+ __cfc1(*__envp);
+
+ return (0);
+}
+
+__fenv_static inline int
+feholdexcept(fenv_t *__envp)
+{
+ fexcept_t fcsr;
+
+ __cfc1(fcsr);
+ *__envp = fcsr;
+ fcsr &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
+ __ctc1(fcsr);
+
+ return (0);
+}
+
+__fenv_static inline int
+fesetenv(const fenv_t *__envp)
+{
+
+ __ctc1(*__envp);
+
+ return (0);
+}
+
+__fenv_static inline int
+feupdateenv(const fenv_t *__envp)
+{
+ fexcept_t fcsr;
+
+ __cfc1(fcsr);
+ fesetenv(__envp);
+ feraiseexcept(fcsr);
+
+ return (0);
+}
+#endif /* !SOFTFLOAT */
+
+#if __BSD_VISIBLE
+
+/* We currently provide no external definitions of the functions below. */
+
+#ifdef SOFTFLOAT
+int feenableexcept(int __mask);
+int fedisableexcept(int __mask);
+int fegetexcept(void);
+#else
+static inline int
+feenableexcept(int __mask)
+{
+ fenv_t __old_fcsr, __new_fcsr;
+
+ __cfc1(__old_fcsr);
+ __new_fcsr = __old_fcsr | (__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT;
+ __ctc1(__new_fcsr);
+
+ return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
+}
+
+static inline int
+fedisableexcept(int __mask)
+{
+ fenv_t __old_fcsr, __new_fcsr;
+
+ __cfc1(__old_fcsr);
+ __new_fcsr = __old_fcsr & ~((__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT);
+ __ctc1(__new_fcsr);
+
+ return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
+}
+
+static inline int
+fegetexcept(void)
+{
+ fexcept_t fcsr;
+
+ __cfc1(fcsr);
+
+ return ((fcsr & _ENABLE_MASK) >> _ENABLE_SHIFT);
+}
+
+#endif /* !SOFTFLOAT */
+
+#endif /* __BSD_VISIBLE */
+
+__END_DECLS
+
+#endif /* !_FENV_H_ */
--- /dev/null
+/*-
+ * Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#define __fenv_static
+#include "openlibm_fenv.h"
+
+#ifdef __GNUC_GNU_INLINE__
+#error "This file must be compiled with C99 'inline' semantics"
+#endif
+
+/*
+ * Hopefully the system ID byte is immutable, so it's valid to use
+ * this as a default environment.
+ */
+const fenv_t __fe_dfl_env = 0;
+
+#ifdef SOFTFLOAT
+#define __set_env(env, flags, mask, rnd) env = ((flags) \
+ | (mask)<<_FPUSW_SHIFT \
+ | (rnd) << 24)
+#define __env_flags(env) ((env) & FE_ALL_EXCEPT)
+#define __env_mask(env) (((env) >> _FPUSW_SHIFT) \
+ & FE_ALL_EXCEPT)
+#define __env_round(env) (((env) >> 24) & _ROUND_MASK)
+#include "fenv-softfloat.h"
+#endif
+
+extern inline int feclearexcept(int __excepts);
+extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
+extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
+extern inline int feraiseexcept(int __excepts);
+extern inline int fetestexcept(int __excepts);
+extern inline int fegetround(void);
+extern inline int fesetround(int __round);
+extern inline int fegetenv(fenv_t *__envp);
+extern inline int feholdexcept(fenv_t *__envp);
+extern inline int fesetenv(const fenv_t *__envp);
+extern inline int feupdateenv(const fenv_t *__envp);
+extern inline int feenableexcept(int __mask);
+extern inline int fedisableexcept(int __mask);
+extern inline int fegetexcept(void);
+
--- /dev/null
+/*-
+ * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+union IEEEl2bits {
+ long double e;
+ struct {
+#ifndef __MIPSEB__
+ unsigned int manl :32;
+ unsigned int manh :20;
+ unsigned int exp :11;
+ unsigned int sign :1;
+#else
+ unsigned int sign :1;
+ unsigned int exp :11;
+ unsigned int manh :20;
+ unsigned int manl :32;
+#endif
+ } bits;
+};
+
+#define LDBL_NBIT 0
+#define mask_nbit_l(u) ((void)0)
+#define LDBL_IMPLICIT_NBIT
+
+#define LDBL_MANH_SIZE 20
+#define LDBL_MANL_SIZE 32
+
+#define LDBL_TO_ARRAY32(u, a) do { \
+ (a)[0] = (uint32_t)(u).bits.manl; \
+ (a)[1] = (uint32_t)(u).bits.manh; \
+} while(0)
+
projects / openlibm.git / commitdiff