+1997-04-17 16:55 Ulrich Drepper <drepper@cygnus.com>
+
+ * misc/libgen.h: Change prototype for of basename to XPG variant.
+ * stdlib/Makefile (routines): Add xpg_basename.
+ * stdlib/basename.c: New file.
+ * string/string.h: Don't declare basename function if basename
+ macro is available.
+
+1997-04-16 17:33 Miles Bader <miles@gnu.ai.mit.edu>
+
+ * login/utmp_file.c (proc_utmp_eq): Only use ut_id field if valid.
+
+1997-04-15 12:47 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ * sysdeps/m68k/fpu/fclrexcpt.c: New file.
+ * sysdeps/m68k/fpu/fenvbits.h: New file.
+ * sysdeps/m68k/fpu/fegetenv.c: New file.
+ * sysdeps/m68k/fpu/fegetround.c: New file.
+ * sysdeps/m68k/fpu/fesetenv.c: New file.
+ * sysdeps/m68k/fpu/fesetround.c: New file.
+ * sysdeps/m68k/fpu/feupdateenv.c: New file.
+ * sysdeps/m68k/fpu/fgetexcptflg.c: New file.
+ * sysdeps/m68k/fpu/fraiseexcpt.c: New file.
+ * sysdeps/m68k/fpu/fsetexcptflg.c: New file.
+ * sysdeps/m68k/fpu/ftestexcept.c: New file.
+ * sysdeps/m68k/fpu/mathbits.h: New file.
+
+ * sysdeps/m68k/fpu/s_remquo.c: New file.
+ * sysdeps/m68k/fpu/s_remquol.c: New file.
+ * sysdeps/m68k/fpu/s_remquof.c: New file.
+
+ * sysdeps/libm-ieee754/s_roundl.c: Restore integer bit when
+ mantissa overflows into exponent. Fix priority of >> vs +.
+
+ * math/libm-test.c (basic_tests): Use the appropriate isnan and
+ isinf function to test the value of the nan function.
+
+1997-04-15 13:40 Ulrich Drepper <drepper@cygnus.com>
+
+ * sysdeps/libm-i387/s_finite.S: Fix typo.
+
+ * sysdeps/i386/fpu/__math.h: Add optimized versions of isgreater,
+ isgreaterequal, isless, islessequal, islessgreater, and
+ isunordered.
+
1997-04-15 03:14 Ulrich Drepper <drepper@cygnus.com>
* wcsmbs/wcsstr.c: Add weak alias wcswcs for Unix98 compliance.
&&
#endif
#if _HAVE_UT_ID - 0
- strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
+ (entry->ut_id[0] && match->ut_id[0]
+ ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
+ : strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0)
#else
strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0
#endif
/*
And again with the value returned by the `nan' function.
*/
- check_bool ("isnan (NAN)", isnan (FUNC(nan) ("")));
- check_bool ("isnan (-NAN)", isnan (-FUNC(nan) ("")));
- check_bool ("!isinf (NAN)", !(isinf (FUNC(nan) (""))));
- check_bool ("!isinf (-NAN)", !(isinf (-FUNC(nan) (""))));
+ check_bool ("isnan (NAN)", FUNC(isnan) (FUNC(nan) ("")));
+ check_bool ("isnan (-NAN)", FUNC(isnan) (-FUNC(nan) ("")));
+ check_bool ("!isinf (NAN)", !(FUNC(isinf) (FUNC(nan) (""))));
+ check_bool ("!isinf (-NAN)", !(FUNC(isinf) (-FUNC(nan) (""))));
check_bool ("NAN != NAN", FUNC(nan) ("") != FUNC(nan) (""));
/* test if EPSILON is ok */
/* Return directory part of PATH or "." if none is available. */
extern char *dirname __P ((char *__path));
-/* Return filename part of PATH. */
-extern char *basename __P ((__const char *__path));
+/* Return final component of PATH.
+
+ This is the weird XPG version of this function. It sometimes will
+ modify its argument. Therefore we normally use the GNU version (in
+ <string.h>) and only if this header is included make the XPG
+ version available under the real name. */
+extern char *__xpg_basename __P ((char *__path));
+#define basename(path) __xpg_basename (path)
__END_DECLS
strtof strtod strtold \
system canonicalize \
a64l l64a \
- rpmatch strfmon strfmon_l getsubopt
+ rpmatch strfmon strfmon_l getsubopt xpg_basename
distribute := exit.h grouping.h abort-instr.h
tests := tst-strtol tst-strtod testmb testrand testsort testdiv \
--- /dev/null
+/* Return basename of given pathname according to the weird XPG specification.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <string.h>
+#include <libgen.h>
+
+
+char *
+__xpg_basename (char *filename)
+{
+ char *p;
+
+ if (filename == NULL || filename[0] == '\0')
+ /* We return a pointer to a static string containing ".". */
+ p = (char *) ".";
+ else
+ {
+ p = strrchr (filename, '/');
+
+ if (p == NULL)
+ /* There is no slash in the filename. Return the whole string. */
+ p = filename;
+ else
+ {
+ if (p[1] == '\0')
+ {
+ /* We must remove trailing '/'. */
+ while (p > filename && p[-1] == '/')
+ --p;
+
+ /* Now we can be in two situations:
+ a) the string only contains '/' characters, so we return
+ '/'
+ b) p points past the last component, but we have to remove
+ the trailing slash. */
+ if (p > filename)
+ {
+ *p-- = '\0';
+ while (p > filename && p[-1] != '/')
+ --p;
+ }
+ else
+ /* The last slash we already found is the right position
+ to return. */
+ while (p[1] != '\0')
+ ++p;
+ }
+ }
+ }
+
+ return p;
+}
extern __ptr_t memfrob __P ((__ptr_t __s, size_t __n));
#endif
-#ifdef __USE_MISC
-/* Return the file name within directory of FILENAME. */
+#if defined __USE_MISC || !defined basename
+/* Return the file name within directory of FILENAME. We don't
+ declare the function if the `basename' macro is available (defined
+ in <libgen.h>) which makes the XPG version of this function
+ available. */
extern char *basename __P ((__const char *__filename));
#endif
: "=q" (__result) : "0" (((int *) &__x)[1]));
return __result;
}
+
+
+/* ISO C 9X defines some macros to perform unordered comparisons. The
+ ix87 FPU supports this with special opcodes and we should use them.
+ This must not be inline functions since we have to be able to handle
+ all floating-point types. */
+#undef isgreater
+#define isgreater(x, y) \
+ ({ int result; \
+ __asm__ ("fucompp; fnstsw; andb $0x45, %%ah; setz %%al;" \
+ "andl $0xff, %0" \
+ : "=a" (result) : "t" (x), "u" (y) : "cc"); \
+ result; })
+
+#undef isgreaterequal
+#define isgreaterequal(x, y) \
+ ({ int result; \
+ __asm__ ("fucompp; fnstsw; testb $0x05, %%ah; setz %%al;" \
+ "andl $0xff, %0" \
+ : "=a" (result) : "t" (x), "u" (y) : "cc"); \
+ result; })
+
+#undef isless
+#define isless(x, y) \
+ ({ int result; \
+ __asm__ ("fucompp; fnstsw; xorb $0x01, %%ah; testb $0x45, %%ah;" \
+ "setz %%al; andl $0xff, %0" \
+ : "=a" (result) : "t" (x), "u" (y) : "cc"); \
+ result; })
+
+#undef islessequal
+#define islessequal(x, y) \
+ ({ int result; \
+ __asm__ ("fucompp; fnstsw; xorb $0x01, %%ah; testb $0x05, %%ah;" \
+ "setz %%al; andl $0xff, %0" \
+ : "=a" (result) : "t" (x), "u" (y) : "cc"); \
+ result; })
+
+#undef islessgreater
+#define islessgreater(x, y) \
+ ({ int result; \
+ __asm__ ("fucompp; fnstsw; testb $0x44, %%ah; setz %%al;" \
+ "andl $0xff, %0" \
+ : "=a" (result) : "t" (x), "u" (y) : "cc"); \
+ result; })
+
+#undef isunordered
+#define isunordered(x, y) \
+ ({ int result; \
+ __asm__ ("fucompp; fnstsw; sahf; setp %%al; andl $0xff, %0" \
+ : "=a" (result) : "t" (x), "u" (y) : "cc"); \
+ result; })
#endif
+
#ifdef __USE_MISC
__MATH_INLINE double coshm1 (double __x);
__MATH_INLINE double
#include <machine/asm.h>
ENTRY(__finite)
- movl 8(%esp)
+ movl 8(%esp),%eax
movl $0xFFEFFFFF,%ecx
subl %eax,%ecx
- xorl %ecx,%eax,%eax
+ xorl %ecx,%eax
shrl $31, %eax
ret
END (__finite)
{
/* Imaginary part is finite. */
double exp_val = __ieee754_exp (__real__ x);
+ double sinix, cosix;
+
+ __sincos (__imag__ x, &sinix, &cosix);
if (isfinite (exp_val))
{
- __real__ retval = exp_val * __cos (__imag__ x);
- __imag__ retval = exp_val * __sin (__imag__ x);
+ __real__ retval = exp_val * cosix;
+ __imag__ retval = exp_val * sinix;
}
else
{
- __real__ retval = __copysign (exp_val, __cos (__imag__ x));
- __imag__ retval = __copysign (exp_val, __sin (__imag__ x));
+ __real__ retval = __copysign (exp_val, cosix);
+ __imag__ retval = __copysign (exp_val, sinix);
}
}
else
}
else
{
- __real__ retval = __copysign (value, __cos (__imag__ x));
- __imag__ retval = __copysign (value, __sin (__imag__ x));
+ double sinix, cosix;
+
+ __sincos (__imag__ x, &sinix, &cosix);
+
+ __real__ retval = __copysign (value, cosix);
+ __imag__ retval = __copysign (value, sinix);
}
}
else if (signbit (__real__ x) == 0)
if (huge + x > 0.0)
{
se &= 0x8000;
- if (j0 == -1)
- se |= 0x3fff;
i0 = i1 = 0;
+ if (j0 == -1)
+ {
+ se |= 0x3fff;
+ i0 = 0x80000000;
+ }
}
}
else
if (huge + x > 0.0)
{
/* Raise inexact if x != 0. */
- u_int32_t j = i0 + 0x40000000 >> j0;
+ u_int32_t j = i0 + (0x40000000 >> j0);
if (j < i0)
se += 1;
i0 = (j & ~i) | 0x80000000;
{
u_int32_t k = i0 + 1;
if (k < i0)
- se += 1;
+ {
+ se += 1;
+ k |= 0x80000000;
+ }
i0 = k;
}
i1 = j;
--- /dev/null
+/* Clear given exceptions in current floating-point environment.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+void
+feclearexcept (int excepts)
+{
+ fexcept_t fpsr;
+
+ /* Mask out unsupported bits/exceptions. */
+ excepts &= FE_ALL_EXCEPT;
+
+ /* Fetch the fpu status register. */
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
+
+ /* Clear the relevant bits. */
+ fpsr &= ~excepts;
+
+ /* Put the new data in effect. */
+ __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
+}
--- /dev/null
+/* Store current floating-point environment.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+void
+fegetenv (fenv_t *envp)
+{
+ __asm__ ("fmovem%.l %/fpcr/%/fpsr,%0" : "=m" (*envp));
+}
--- /dev/null
+/* Return current rounding direction.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+int
+fegetround (void)
+{
+ int fpcr;
+
+ __asm__ ("fmove%.l %!,%0" : "=dm" (fpcr));
+
+ return fpcr & FE_UPWARD;
+}
--- /dev/null
+/* Store current floating-point environment and clear exceptions.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+int
+feholdexcept (fenv_t *envp)
+{
+ fexcept_t fpcr, fpsr;
+
+ /* Store the environment. */
+ __asm__ ("fmovem%.l %/fpcr/%/fpsr,%0" : "=m" (*envp));
+
+ /* Now clear all exceptions. */
+ fpsr = envp->status_register & ~FE_ALL_EXCEPT;
+ __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
+ /* And set all exceptions to non-stop. */
+ fpcr = envp->control_register & ~(FE_ALL_EXCEPT << 5);
+ __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
+
+ return 1;
+}
--- /dev/null
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* This file should never be included directly. */
+
+#ifndef _FENVBITS_H
+#define _FENVBITS_H 1
+
+/* Define bits representing the exception. We use the bit positions of
+ the appropriate bits in the FPSR Accrued Exception Byte. */
+enum
+ {
+ FE_INEXACT = 1 << 3,
+#define FE_INEXACT FE_INEXACT
+ FE_DIVBYZERO = 1 << 4,
+#define FE_DIVBYZERO FE_DIVBYZERO
+ FE_UNDERFLOW = 1 << 5,
+#define FE_UNDERFLOW FE_UNDERFLOW
+ FE_OVERFLOW = 1 << 6,
+#define FE_OVERFLOW FE_OVERFLOW
+ FE_INVALID = 1 << 7
+#define FE_INVALID FE_INVALID
+ };
+
+#define FE_ALL_EXCEPT \
+ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+/* The m68k FPU supports all of the four defined rounding modes. We use
+ the bit positions in the FPCR Mode Control Byte as the values for the
+ appropriate macros. */
+enum
+ {
+ FE_TONEAREST = 0,
+#define FE_TONEAREST FE_TONEAREST
+ FE_TOWARDSZERO = 1 << 4,
+#define FE_TOWARDSZERO FE_TOWARDSZERO
+ FE_DOWNWARD = 2 << 4,
+#define FE_DOWNWARD FE_DOWNWARD
+ FE_UPWARD = 3 << 4
+#define FE_UPWARD FE_UPWARD
+ };
+
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+
+/* Type representing floating-point environment. This structure
+ corresponds to the layout of the block written by `fmovem'. */
+typedef struct
+ {
+ fexcept_t control_register;
+ fexcept_t status_register;
+ }
+fenv_t;
+
+/* If the default argument is used we use this value. */
+#define FE_DFL_ENV ((fenv_t *) -1)
+
+#ifdef __USE_GNU
+/* Floating-point environment where none of the exceptions are masked. */
+# define FE_NOMASK_ENV ((fenv_t *) -2)
+#endif
+
+#endif /* fenvbits.h */
--- /dev/null
+/* Install given floating-point environment.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+void
+fesetenv (const fenv_t *envp)
+{
+ fenv_t temp;
+
+ /* Install the environment specified by ENVP. But there are a few
+ values which we do not want to come from the saved environment.
+ Therefore, we get the current environment and replace the values
+ we want to use from the environment specified by the parameter. */
+ __asm__ ("fmovem%.l %/fpcr/%/fpsr,%0" : "=m" (*&temp));
+
+ temp.status_register &= ~FE_ALL_EXCEPT;
+ temp.control_register &= ~((FE_ALL_EXCEPT << 5) | FE_UPWARD);
+ if (envp == FE_DFL_ENV)
+ ;
+ else if (envp == FE_NOMASK_ENV)
+ temp.control_register |= FE_ALL_EXCEPT << 5;
+ else
+ {
+ temp.control_register |= (envp->control_register
+ & ((FE_ALL_EXCEPT << 5) | FE_UPWARD));
+ temp.status_register |= envp->status_register & FE_ALL_EXCEPT;
+ }
+
+ __asm__ __volatile__ ("fmovem%.l %0,%/fpcr/%/fpsr" : : "m" (temp));
+}
--- /dev/null
+/* Set current rounding direction.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+int
+fesetround (int round)
+{
+ fexcept_t fpcr;
+
+ if (round & ~FE_UPWARD)
+ /* ROUND is no valid rounding mode. */
+ return 0;
+
+ __asm__ ("fmove%.l %!,%0" : "=dm" (fpcr));
+ fpcr &= ~FE_UPWARD;
+ fpcr |= round;
+ __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
+
+ return 1;
+}
--- /dev/null
+/* Install given floating-point environment and raise exceptions.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+void
+feupdateenv (const fenv_t *envp)
+{
+ fexcept_t fpsr;
+
+ /* Save current exceptions. */
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
+ fpsr &= FE_ALL_EXCEPT;
+
+ /* Install new environment. */
+ fesetenv (envp);
+
+ /* Raise the saved exception. Incidently for us the implementation
+ defined format of the values in objects of type fexcept_t is the
+ same as the ones specified using the FE_* constants. */
+ feraiseexcept ((int) fpsr);
+}
--- /dev/null
+/* Store current representation for exceptions.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+void
+fegetexceptflag (fexcept_t *flagp, int excepts)
+{
+ fexcept_t fpsr;
+
+ /* Get the current exceptions. */
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
+
+ *flagp = fpsr & excepts & FE_ALL_EXCEPT;
+}
--- /dev/null
+/* Raise given exceptions.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+#include <math.h>
+
+void
+feraiseexcept (int excepts)
+{
+ /* Raise exceptions represented by EXCEPTS. But we must raise only one
+ signal at a time. It is important that if the overflow/underflow
+ exception and the divide by zero exception are given at the same
+ time, the overflow/underflow exception follows the divide by zero
+ exception. */
+
+ /* First: invalid exception. */
+ if (excepts & FE_INVALID)
+ {
+ /* One example of a invalid operation is 0 * Infinity. */
+ double d = 0.0 * HUGE_VAL;
+ /* Now force the exception. */
+ __asm__ __volatile__ ("fnop" : : "f" (d));
+ }
+
+ /* Next: division by zero. */
+ if (excepts & FE_DIVBYZERO)
+ {
+ double d = 1.0;
+ __asm__ __volatile__ ("fdiv%.s %#0r0,%0; fnop" : "=f" (d) : "0" (d));
+ }
+
+ /* Next: overflow. */
+ if (excepts & FE_OVERFLOW)
+ {
+ long double d = LDBL_MAX * LDBL_MAX;
+ /* Now force the exception. */
+ __asm__ __volatile__ ("fnop" : : "f" (d));
+ }
+
+ /* Next: underflow. */
+ if (excepts & FE_UNDERFLOW)
+ {
+ long double d = LDBL_MIN / 16.0;
+ /* Now force the exception. */
+ __asm__ __volatile__ ("fnop" : : "f" (d));
+ }
+
+ /* Last: inexact. */
+ if (excepts & FE_INEXACT)
+ {
+ long double d1, d2 = 1.0;
+ __asm__ __volatile__ ("fmovecr %#0,%0\n\t"
+ "fdiv%.x %1,%0\n\t"
+ "fnop"
+ : "=&f" (d1) : "f" (d2));
+ }
+}
--- /dev/null
+/* Set floating-point environment exception handling.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+#include <math.h>
+
+void
+fesetexceptflag (const fexcept_t *flagp, int excepts)
+{
+ fexcept_t fpsr;
+
+ /* Get the current status register. */
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
+
+ /* Install the new exception bits in the Accrued Exception Byte. */
+ fpsr &= ~(excepts & FE_ALL_EXCEPT);
+ fpsr |= *flagp & excepts & FE_ALL_EXCEPT;
+
+ /* Store the new status register. */
+ __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
+}
--- /dev/null
+/* Test exception in current environment.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fenv.h>
+
+int
+fetestexcept (int excepts)
+{
+ fexcept_t fpsr;
+
+ /* Get current exceptions. */
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
+
+ return fpsr & excepts & FE_ALL_EXCEPT;
+}
--- /dev/null
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _MATHBITS_H
+#define _MATHBITS_H 1
+
+/* The m68k FPUs evaluate all values in the 96 bit floating-point format
+ which is also available for the user as `long double'. Therefore we
+ define: */
+typedef long double float_t; /* `float' expressions are evaluated as
+ `long double'. */
+typedef long double double_t; /* `double' expressions are evaluated as
+ `long double'. */
+
+/* Signal that both types are `long double'. */
+#define FLT_EVAL_METHOD 2
+
+/* Define `INFINITY' as value of type `float_t'. */
+#define INFINITY HUGE_VALL
+
+#endif /* mathbits.h */
--- /dev/null
+/* Compute remainder and a congruent to the quotient. m68k fpu version
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#define __LIBC_M81_MATH_INLINES
+#include <math.h>
+
+#ifndef SUFF
+#define SUFF
+#endif
+#ifndef float_type
+#define float_type double
+#endif
+
+#define CONCATX(a,b) __CONCAT(a,b)
+#define s(name) CONCATX(name,SUFF)
+
+float_type
+s(__remquo) (float_type x, float_type y, int *quo)
+{
+ float_type result;
+ int cquo, fpsr;
+
+ /* FIXME: Which of frem and fmod is correct? */
+#if 1
+ __asm ("frem%.x %2,%0\n\tfmove%.l %/fpsr,%1"
+ : "=f" (result), "=dm" (fpsr) : "f" (y), "0" (x));
+ cquo = (fpsr >> 16) & 0x7f;
+ if ((result > 0) != (x > 0))
+ cquo--;
+#else
+ __asm ("fmod%.x %2,%0\n\tfmove%.l %/fpsr,%1"
+ : "=f" (result), "=dm" (fpsr) : "f" (y), "0" (x));
+ cquo = (fpsr >> 16) & 0x7f;
+#endif
+ if (fpsr & (1 << 23))
+ cquo = -cquo;
+ *quo = cquo;
+ return result;
+}
+#define weak_aliasx(a,b) weak_alias(a,b)
+weak_aliasx (s(__remquo), s(remquo))
--- /dev/null
+#define SUFF f
+#define float_type float
+#include <s_remquo.c>
--- /dev/null
+#define SUFF l
+#define float_type long double
+#include <s_remquo.c>
projects / thirdparty / glibc.git / commitdiff
