about summary refs log tree commit diff
path: root/sysdeps/m68k/fpu
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/m68k/fpu')
-rw-r--r--sysdeps/m68k/fpu/__math.h76
-rw-r--r--sysdeps/m68k/fpu/e_pow.c49
-rw-r--r--sysdeps/m68k/fpu/s_sincos.c39
-rw-r--r--sysdeps/m68k/fpu/s_sincosf.c3
-rw-r--r--sysdeps/m68k/fpu/s_sincosl.c3
5 files changed, 138 insertions, 32 deletions
diff --git a/sysdeps/m68k/fpu/__math.h b/sysdeps/m68k/fpu/__math.h
index 68a6d90e32..92487f9b04 100644
--- a/sysdeps/m68k/fpu/__math.h
+++ b/sysdeps/m68k/fpu/__math.h
@@ -274,6 +274,14 @@ __m81_defun (float_type, __CONCAT(__nearbyint,s), (float_type __x))	  \
   __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs.  */		  \
 		      : "dmi" (__ctrl_reg));				  \
   return __result;							  \
+}									  \
+									  \
+__m81_inline void							  \
+__m81_u(__CONCAT(__sincos,s))(float_type __x, float_type *__sinx,	  \
+			      float_type *__cosx)			  \
+{									  \
+  __asm ("fsincos%.x %2,%1:%0"						  \
+	 : "=f" (*__sinx), "=f" (*__cosx) : "f" (__x));			  \
 }
 
 /* This defines the three variants of the inline functions.  */
@@ -324,6 +332,10 @@ __inline_forward_c(int,ilogb, (double __value), (__value))
 #ifdef __USE_ISOC9X
 __inline_forward_c(double,nearbyint, (double __value), (__value))
 #endif
+#ifdef __USE_GNU
+__inline_forward(void,sincos, (double __x, double *__sinx, double *__cosx),
+		 (__x, __sinx, __cosx))
+#endif
 
 #if defined __USE_MISC || defined __USE_ISOC9X
 
@@ -341,6 +353,10 @@ __inline_forward_c(int,ilogbf, (float __value), (__value))
 #ifdef __USE_ISOC9X
 __inline_forward_c(float,nearbyintf, (float __value), (__value))
 #endif
+#ifdef __USE_GNU
+__inline_forward(void,sincosf, (float __x, float *__sinx, float *__cosx),
+		 (__x, __sinx, __cosx))
+#endif
 
 __inline_forward(long double,frexpl, (long double __value, int *__expptr),
 		 (__value, __expptr))
@@ -358,12 +374,72 @@ __inline_forward_c(int,ilogbl, (long double __value), (__value))
 __inline_forward_c(long double,nearbyintl, (long double __value), (__value))
 __inline_forward_c(long int,rinttol, (long double __value), (__value))
 #endif
+#ifdef __USE_GNU
+__inline_forward(void,sincosl,
+		 (long double __x, long double *__sinx, long double *__cosx),
+		 (__x, __sinx, __cosx))
+#endif
 
 #endif /* Use misc or ISO C9X */
 
 #undef __inline_forward
 #undef __inline_forward_c
 
+#ifdef __USE_ISOC9X
+
+/* ISO C 9X defines some macros to perform unordered comparisons.  The
+   m68k FPU supports this with special opcodes and we should use them.
+   These must not be inline functions since we have to be able to handle
+   all floating-point types.  */
+#undef isgreater
+#define isgreater(x, y)					\
+   __extension__					\
+   ({ char __result;					\
+      __asm__ ("fcmp %2,%1; fsogt %0"			\
+	       : "=dm" (__result) : "f" (x), "f" (y));	\
+      (int) __result; })
+
+#undef isgreaterequal
+#define isgreaterequal(x, y)				\
+   __extension__					\
+   ({ char __result;					\
+      __asm__ ("fcmp %2,%1; fsoge %0"			\
+	       : "=dm" (__result) : "f" (x), "f" (y));	\
+      (int) __result; })
+
+#undef isless
+#define isless(x, y)					\
+   __extension__					\
+   ({ char __result;					\
+      __asm__ ("fcmp %2,%1; fsolt %0"			\
+	       : "=dm" (__result) : "f" (x), "f" (y));	\
+      (int) __result; })
+
+#undef islessequal
+#define islessequal(x, y)				\
+   __extension__					\
+   ({ char __result;					\
+      __asm__ ("fcmp %2,%1; fsole %0"			\
+	       : "=dm" (__result) : "f" (x), "f" (y));	\
+      (int) __result; })
+
+#undef islessgreater
+#define islessgreater(x, y)				\
+   __extension__					\
+   ({ char __result;					\
+      __asm__ ("fcmp %2,%1; fsogl %0"			\
+	       : "=dm" (__result) : "f" (x), "f" (y));	\
+      (int) __result; })
+
+#undef isunordered
+#define isunordered(x, y)				\
+   __extension__					\
+   ({ char __result;					\
+      __asm__ ("fcmp %2,%1; fsun %0"			\
+	       : "=dm" (__result) : "f" (x), "f" (y));	\
+      (int) __result; })
+#endif
+
 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
 
 #endif	/* GCC.  */
diff --git a/sysdeps/m68k/fpu/e_pow.c b/sysdeps/m68k/fpu/e_pow.c
index 284f1bf294..a39b63d342 100644
--- a/sysdeps/m68k/fpu/e_pow.c
+++ b/sysdeps/m68k/fpu/e_pow.c
@@ -80,51 +80,36 @@ s(__ieee754_pow) (float_type x, float_type y)
 	z = 1 / z;
       if (m81(__signbit) (x))
 	{
-	  float_type temp = m81(__rint) (y);
-	  if (y != temp)
+	  if (y != m81(__rint) (y))
 	    {
 	      if (x == -1)
 		z = 0.0/0.0;
 	    }
 	  else
-	    {
-	      if (sizeof (float_type) == sizeof (float))
-		{
-		  long i = (long) y;
-		  if (i & 1)
-		    z = -z;
-		}
-	      else
-		{
-		  long long i = (long long) y;
-		  if ((float_type) i == y && i & 1)
-		    z = -z;
-		}
-	    }
+	    goto maybe_negate;
 	}
       return z;
     }
 
   if (x < 0.0)
     {
-      float_type temp = m81(__rint) (y);
-      if (y == temp)
+      if (y == m81(__rint) (y))
 	{
-	  long long i = (long long) y;
 	  z = m81(__ieee754_exp) (y * m81(__ieee754_log) (-x));
-	  if (sizeof (float_type) == sizeof (float))
-	    {
-	      long i = (long) y;
-	      if (i & 1)
-		z = -z;
-	    }
-	  else
-	    {
-	      /* If the conversion to long long was inexact assume that y
-		 is an even integer.  */
-	      if ((float_type) i == y && i & 1)
-		z = -z;
-	    }
+	maybe_negate:
+	  /* We always use the long double format, since y is already in
+	     this format and rounding won't change the result.  */
+	  {
+	    int32_t exponent;
+	    u_int32_t i0, i1;
+	    GET_LDOUBLE_WORDS (exponent, i0, i1, y);
+	    exponent = (exponent & 0x7fff) - 0x3fff;
+	    if (exponent <= 31
+		? i0 & (1 << (31 - exponent))
+		: (exponent <= 63
+		   && i1 & (1 << (63 - exponent))))
+	      z = -z;
+	  }
 	}
       else
 	z = 0.0/0.0;
diff --git a/sysdeps/m68k/fpu/s_sincos.c b/sysdeps/m68k/fpu/s_sincos.c
new file mode 100644
index 0000000000..ada21d0fb1
--- /dev/null
+++ b/sysdeps/m68k/fpu/s_sincos.c
@@ -0,0 +1,39 @@
+/* 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.  */
+
+#define __LIBC_M81_MATH_INLINES
+#include <math.h>
+
+#ifndef FUNC
+#define FUNC sincos
+#endif
+#ifndef float_type
+#define float_type double
+#endif
+
+#define CONCATX(a,b) __CONCAT(a,b)
+
+void
+CONCATX(__,FUNC) (x, sinx, cosx)
+     float_type x, *sinx, *cosx;
+{
+  __m81_u(CONCATX(__,FUNC))(x, sinx, cosx);
+}
+
+#define weak_aliasx(a,b) weak_alias(a,b)
+weak_aliasx (CONCATX(__,FUNC), FUNC)
diff --git a/sysdeps/m68k/fpu/s_sincosf.c b/sysdeps/m68k/fpu/s_sincosf.c
new file mode 100644
index 0000000000..7ee2ec6600
--- /dev/null
+++ b/sysdeps/m68k/fpu/s_sincosf.c
@@ -0,0 +1,3 @@
+#define FUNC sincosf
+#define float_type float
+#include <s_sincos.c>
diff --git a/sysdeps/m68k/fpu/s_sincosl.c b/sysdeps/m68k/fpu/s_sincosl.c
new file mode 100644
index 0000000000..f998cc0977
--- /dev/null
+++ b/sysdeps/m68k/fpu/s_sincosl.c
@@ -0,0 +1,3 @@
+#define FUNC sincosl
+#define float_type long double
+#include <s_sincos.c>
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-22 01:08:40 +0000