[glibc.git] / sysdeps / m68k / fpu / bits / mathinline.h

/* Definitions of inline math functions implemented by the m68881/2.
   Copyright (C) 1991, 92, 93, 94, 96, 97 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.  */

#ifdef	__GNUC__

#include <sys/cdefs.h>

#ifdef	__LIBC_M81_MATH_INLINES
/* This is used when defining the functions themselves.  Define them with
   __ names, and with `static inline' instead of `extern inline' so the
   bodies will always be used, never an external function call.  */
#define	__m81_u(x)	__CONCAT(__,x)
#define __m81_inline	static __inline
#else
#define	__m81_u(x)	x
#define __m81_inline	extern __inline
#define	__M81_MATH_INLINES	1
#endif

/* Define a const math function.  */
#define __m81_defun(rettype, func, args)				      \
  __m81_inline rettype __attribute__((__const__))			      \
  __m81_u(func) args

/* Define the three variants of a math function that has a direct
   implementation in the m68k fpu.  FUNC is the name for C (which will be
   suffixed with f and l for the float and long double version, resp).  OP
   is the name of the fpu operation (without leading f).  */

#if defined __USE_MISC || defined __USE_ISOC9X
#define	__inline_mathop(func, op)			\
  __inline_mathop1(double, func, op)			\
  __inline_mathop1(float, __CONCAT(func,f), op)		\
  __inline_mathop1(long double, __CONCAT(func,l), op)
#else
#define	__inline_mathop(func, op)			\
  __inline_mathop1(double, func, op)
#endif

#define __inline_mathop1(float_type,func, op)				      \
  __m81_defun (float_type, func, (float_type __mathop_x))		      \
  {									      \
    float_type __result;						      \
    __asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
    return __result;							      \
  }

#ifdef __LIBC_M81_MATH_INLINES
/* ieee style elementary functions */
/* These are internal to the implementation of libm.  */
__inline_mathop(__ieee754_acos, acos)
__inline_mathop(__ieee754_asin, asin)
__inline_mathop(__ieee754_cosh, cosh)
__inline_mathop(__ieee754_sinh, sinh)
__inline_mathop(__ieee754_exp, etox)
__inline_mathop(__ieee754_log10, log10)
__inline_mathop(__ieee754_log, logn)
__inline_mathop(__ieee754_sqrt, sqrt)
__inline_mathop(__ieee754_atanh, atanh)
#endif

__inline_mathop(__atan, atan)
__inline_mathop(__cos, cos)
__inline_mathop(__sin, sin)
__inline_mathop(__tan, tan)
__inline_mathop(__tanh, tanh)
__inline_mathop(__fabs, abs)

__inline_mathop(__rint, int)
__inline_mathop(__expm1, etoxm1)
__inline_mathop(__log1p, lognp1)
__inline_mathop(__significand, getman)

__inline_mathop(__log2, log2)
__inline_mathop(__exp2, twotox)
__inline_mathop(__trunc, intrz)

#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__

__inline_mathop(atan, atan)
__inline_mathop(cos, cos)
__inline_mathop(sin, sin)
__inline_mathop(tan, tan)
__inline_mathop(tanh, tanh)

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
__inline_mathop(rint, int)
__inline_mathop(expm1, etoxm1)
__inline_mathop(log1p, lognp1)
#endif

#ifdef __USE_MISC
__inline_mathop(significand, getman)
#endif

#ifdef __USE_ISOC9X
__inline_mathop(log2, log2)
__inline_mathop(exp2, twotox)
__inline_mathop(trunc, intrz)
#endif

#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */

/* This macro contains the definition for the rest of the inline
   functions, using __FLOAT_TYPE as the domain type and __S as the suffix
   for the function names.  */

#ifdef __LIBC_M81_MATH_INLINES
/* Internally used functions.  */
#define __internal_inline_functions(float_type, s)			     \
__m81_defun (float_type, __CONCAT(__ieee754_remainder,s),		     \
	     (float_type __x, float_type __y))				     \
{									     \
  float_type __result;							     \
  __asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));	     \
  return __result;							     \
}									     \
									     \
__m81_defun (float_type, __CONCAT(__ieee754_fmod,s),			     \
	     (float_type __x, float_type __y))				     \
{									     \
  float_type __result;							     \
  __asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));	     \
  return __result;							     \
}

__internal_inline_functions (double,)
__internal_inline_functions (float,f)
__internal_inline_functions (long double,l)
#undef __internal_inline_functions

/* Get the m68881 condition codes, to quickly check multiple conditions.  */
static __inline__ unsigned long
__m81_test (long double __val)
{
  unsigned long __fpsr;
  __asm ("ftst%.x %1; fmove%.l %/fpsr,%0" : "=dm" (__fpsr) : "f" (__val));
  return __fpsr;
}

/* Bit values returned by __m81_test.  */
#define __M81_COND_NAN (1 << 24)
#define __M81_COND_INF (2 << 24)
#define __M81_COND_ZERO (4 << 24)
#define __M81_COND_NEG (8 << 24)

#endif /* __LIBC_M81_MATH_INLINES */

/* The rest of the functions are available to the user.  */

#define __inline_functions(float_type, s)				  \
__m81_inline float_type							  \
__m81_u(__CONCAT(__frexp,s))(float_type __value, int *__expptr)		  \
{									  \
  float_type __mantissa, __exponent;					  \
  int __iexponent;							  \
  unsigned long __fpsr;							  \
  __asm("ftst%.x %1\n"							  \
	"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));	  \
  if (__fpsr & (7 << 24))						  \
    {									  \
      /* Not finite or zero.  */					  \
      *__expptr = 0;							  \
      return __value;							  \
    }									  \
  __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value));	  \
  __iexponent = (int) __exponent + 1;					  \
  *__expptr = __iexponent;						  \
  __asm("fscale%.l %2, %0" : "=f" (__mantissa)				  \
	: "0" (__value), "dmi" (-__iexponent));				  \
  return __mantissa;							  \
}									  \
									  \
__m81_defun (float_type, __CONCAT(__floor,s), (float_type __x))		  \
{									  \
  float_type __result;							  \
  unsigned long int __ctrl_reg;						  \
  __asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));		  \
  /* Set rounding towards negative infinity.  */			  \
  __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs.  */		  \
		      : "dmi" ((__ctrl_reg & ~0x10) | 0x20));		  \
  /* Convert X to an integer, using -Inf rounding.  */			  \
  __asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));	  \
  /* Restore the previous rounding mode.  */				  \
  __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs.  */		  \
		      : "dmi" (__ctrl_reg));				  \
  return __result;							  \
}									  \
									  \
__m81_defun (float_type, __CONCAT(__ceil,s), (float_type __x))		  \
{									  \
  float_type __result;							  \
  unsigned long int __ctrl_reg;						  \
  __asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));		  \
  /* Set rounding towards positive infinity.  */			  \
  __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs.  */		  \
		      : "dmi" (__ctrl_reg | 0x30));			  \
  /* Convert X to an integer, using +Inf rounding.  */			  \
  __asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));	  \
  /* Restore the previous rounding mode.  */				  \
  __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs.  */		  \
		      : "dmi" (__ctrl_reg));				  \
  return __result;							  \
}									  \
									  \
__m81_defun (int, __CONCAT(__isinf,s), (float_type __value))		  \
{									  \
  /* There is no branch-condition for infinity,				  \
     so we must extract and examine the condition codes manually.  */	  \
  unsigned long int __fpsr;						  \
  __asm("ftst%.x %1\n"							  \
	"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));	  \
  return (__fpsr & (2 << 24)) ? (__fpsr & (8 << 24) ? -1 : 1) : 0;	  \
}									  \
									  \
__m81_defun (int, __CONCAT(__isnan,s), (float_type __value))		  \
{									  \
  char __result;							  \
  __asm("ftst%.x %1\n"							  \
	"fsun %0" : "=dm" (__result) : "f" (__value));			  \
  return __result;							  \
}									  \
									  \
__m81_defun (int, __CONCAT(__finite,s), (float_type __value))		  \
{									  \
  /* There is no branch-condition for infinity, so we must extract and	  \
     examine the condition codes manually.  */				  \
  unsigned long int __fpsr;						  \
  __asm ("ftst%.x %1\n"							  \
	 "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));	  \
  return (__fpsr & (3 << 24)) == 0;					  \
}									  \
									  \
__m81_defun (int, __CONCAT(__signbit,s), (float_type __value))		  \
{									  \
  /* There is no branch-condition for the sign bit, so we must extract	  \
     and examine the condition codes manually.  */			  \
  unsigned long int __fpsr;						  \
  __asm ("ftst%.x %1\n"							  \
	 "fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));	  \
  return (__fpsr >> 27) & 1;						  \
}									  \
									  \
__m81_defun (int, __CONCAT(__ilogb,s), (float_type __x))		  \
{									  \
  float_type __result;							  \
  if (__m81_u(__CONCAT(__isnan,s)) (__x))				  \
    /* The stupid standard requires us to return a specific value where	  \
       it would depend on the bitpattern of the NaN.  */		  \
    return 0x7fffffff;							  \
  __asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x));		  \
  return (int) __result;						  \
}									  \
									  \
__m81_defun (float_type, __CONCAT(__scalbn,s),				  \
	     (float_type __x, long int __n))				  \
{									  \
  float_type __result;							  \
  __asm ("fscale%.l %1, %0" : "=f" (__result) : "dmi" (__n), "0" (__x));  \
  return __result;							  \
}									  \
									  \
__m81_defun (float_type, __CONCAT(__nearbyint,s), (float_type __x))	  \
{									  \
  float_type __result;							  \
  unsigned long int __ctrl_reg;						  \
  __asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));		  \
  /* Temporarily disable the inexact exception.  */			  \
  __asm __volatile__ ("fmove%.l %0, %!" : /* No outputs.  */		  \
		      : "dmi" (__ctrl_reg & ~0x200));			  \
  __asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__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.  */
__inline_functions (double,)
__inline_functions (float,f)
__inline_functions (long double,l)
#undef __inline_functions

__m81_defun (long int, __lrint, (long double __x))
{
  long int __result;
  __asm ("fmove%.l %1, %0" : "=dm" (__result) : "f" (__x));
  return __result;
}

#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__

/* Define inline versions of the user visible functions.  */

#define __inline_forward_c(rettype, name, args1, args2)	\
extern __inline rettype __attribute__((__const__))	\
name args1						\
{							\
  return __CONCAT(__,name) args2;			\
}

#define __inline_forward(rettype, name, args1, args2)	\
extern __inline rettype name args1			\
{							\
  return __CONCAT(__,name) args2;			\
}

__inline_forward(double,frexp, (double __value, int *__expptr),
		 (__value, __expptr))
__inline_forward_c(double,floor, (double __x), (__x))
__inline_forward_c(double,ceil, (double __x), (__x))
#ifdef __USE_MISC
__inline_forward_c(int,isinf, (double __value), (__value))
__inline_forward_c(int,finite, (double __value), (__value))
__inline_forward_c(double,scalbn, (double __x, long int __n), (__x, __n))
#endif
#if defined __USE_MISC || defined __USE_XOPEN
#ifndef __USE_ISOC9X /* Conflict with macro of same name.  */
__inline_forward_c(int,isnan, (double __value), (__value))
#endif
__inline_forward_c(int,ilogb, (double __value), (__value))
#endif
#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

__inline_forward(float,frexpf, (float __value, int *__expptr),
		 (__value, __expptr))
__inline_forward_c(float,floorf, (float __x), (__x))
__inline_forward_c(float,ceilf, (float __x), (__x))
#ifdef __USE_MISC
__inline_forward_c(int,isinff, (float __value), (__value))
__inline_forward_c(int,finitef, (float __value), (__value))
__inline_forward_c(float,scalbnf, (float __x, long int __n), (__x, __n))
__inline_forward_c(int,isnanf, (float __value), (__value))
__inline_forward_c(int,ilogbf, (float __value), (__value))
#endif
#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))
__inline_forward_c(long double,floorl, (long double __x), (__x))
__inline_forward_c(long double,ceill, (long double __x), (__x))
#ifdef __USE_MISC
__inline_forward_c(int,isinfl, (long double __value), (__value))
__inline_forward_c(int,finitel, (long double __value), (__value))
__inline_forward_c(long double,scalbnl, (long double __x, long int __n),
		   (__x, __n))
__inline_forward_c(int,isnanl, (long double __value), (__value))
__inline_forward_c(int,ilogbl, (long double __value), (__value))
#endif
#ifdef __USE_ISOC9X
__inline_forward_c(long double,nearbyintl, (long double __value), (__value))
__inline_forward_c(long int,lrint, (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%.x %2,%1; fsogt %0"		\
	       : "=dm" (__result) : "f" (x), "f" (y));	\
      (int) __result; })

#undef isgreaterequal
#define isgreaterequal(x, y)				\
   __extension__					\
   ({ char __result;					\
      __asm__ ("fcmp%.x %2,%1; fsoge %0"		\
	       : "=dm" (__result) : "f" (x), "f" (y));	\
      (int) __result; })

#undef isless
#define isless(x, y)					\
   __extension__					\
   ({ char __result;					\
      __asm__ ("fcmp%.x %2,%1; fsolt %0"		\
	       : "=dm" (__result) : "f" (x), "f" (y));	\
      (int) __result; })

#undef islessequal
#define islessequal(x, y)				\
   __extension__					\
   ({ char __result;					\
      __asm__ ("fcmp%.x %2,%1; fsole %0"		\
	       : "=dm" (__result) : "f" (x), "f" (y));	\
      (int) __result; })

#undef islessgreater
#define islessgreater(x, y)				\
   __extension__					\
   ({ char __result;					\
      __asm__ ("fcmp%.x %2,%1; fsogl %0"		\
	       : "=dm" (__result) : "f" (x), "f" (y));	\
      (int) __result; })

#undef isunordered
#define isunordered(x, y)				\
   __extension__					\
   ({ char __result;					\
      __asm__ ("fcmp%.x %2,%1; fsun %0"			\
	       : "=dm" (__result) : "f" (x), "f" (y));	\
      (int) __result; })
#endif

#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */

#endif	/* GCC.  */
Commit	Line	Data
377a515b UD	1	/* Definitions of inline math functions implemented by the m68881/2.
	2	Copyright (C) 1991, 92, 93, 94, 96, 97 Free Software Foundation, Inc.
	3	This file is part of the GNU C Library.
28f540f4	4
377a515b UD	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Library General Public License as
	7	published by the Free Software Foundation; either version 2 of the
	8	License, or (at your option) any later version.
28f540f4	9
377a515b UD	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Library General Public License for more details.
28f540f4	14
377a515b UD	15	You should have received a copy of the GNU Library General Public
	16	License along with the GNU C Library; see the file COPYING.LIB. If not,
	17	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	18	Boston, MA 02111-1307, USA. */
28f540f4 RM	19
	20	#ifdef __GNUC__
	21
	22	#include <sys/cdefs.h>
	23
377a515b	24	#ifdef __LIBC_M81_MATH_INLINES
28f540f4 RM	25	/* This is used when defining the functions themselves. Define them with
	26	__ names, and with `static inline' instead of `extern inline' so the
	27	bodies will always be used, never an external function call. */
	28	#define __m81_u(x) __CONCAT(__,x)
	29	#define __m81_inline static __inline
	30	#else
	31	#define __m81_u(x) x
7176f4e4	32	#define __m81_inline extern __inline
569c558c	33	#define __M81_MATH_INLINES 1
28f540f4 RM	34	#endif
28f540f4 RM	35
6025c399 RM	36	/* Define a const math function. */
6025c399 RM	37	#define __m81_defun(rettype, func, args) \
377a515b	38	__m81_inline rettype __attribute__((__const__)) \
6025c399 RM	39	__m81_u(func) args
6025c399 RM	40
ec4b0518 UD	41	/* Define the three variants of a math function that has a direct
	42	implementation in the m68k fpu. FUNC is the name for C (which will be
	43	suffixed with f and l for the float and long double version, resp). OP
	44	is the name of the fpu operation (without leading f). */
377a515b	45
4cca6b86	46	#if defined __USE_MISC \|\| defined __USE_ISOC9X
377a515b UD	47	#define __inline_mathop(func, op) \
	48	__inline_mathop1(double, func, op) \
	49	__inline_mathop1(float, __CONCAT(func,f), op) \
	50	__inline_mathop1(long double, __CONCAT(func,l), op)
	51	#else
	52	#define __inline_mathop(func, op) \
	53	__inline_mathop1(double, func, op)
	54	#endif
	55
	56	#define __inline_mathop1(float_type,func, op) \
	57	__m81_defun (float_type, func, (float_type __mathop_x)) \
8f30ca23	58	{ \
377a515b	59	float_type __result; \
8f30ca23 RM	60	__asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
	61	return __result; \
	62	}
ec4b0518	63
377a515b	64	#ifdef __LIBC_M81_MATH_INLINES
6025c399	65	/* ieee style elementary functions */
377a515b	66	/* These are internal to the implementation of libm. */
6025c399 RM	67	__inline_mathop(__ieee754_acos, acos)
	68	__inline_mathop(__ieee754_asin, asin)
	69	__inline_mathop(__ieee754_cosh, cosh)
	70	__inline_mathop(__ieee754_sinh, sinh)
	71	__inline_mathop(__ieee754_exp, etox)
	72	__inline_mathop(__ieee754_log10, log10)
	73	__inline_mathop(__ieee754_log, logn)
	74	__inline_mathop(__ieee754_sqrt, sqrt)
	75	__inline_mathop(__ieee754_atanh, atanh)
377a515b	76	#endif
6025c399	77
6025c399 RM	78	__inline_mathop(__atan, atan)
	79	__inline_mathop(__cos, cos)
	80	__inline_mathop(__sin, sin)
	81	__inline_mathop(__tan, tan)
	82	__inline_mathop(__tanh, tanh)
	83	__inline_mathop(__fabs, abs)
6025c399 RM	84
	85	__inline_mathop(__rint, int)
	86	__inline_mathop(__expm1, etoxm1)
	87	__inline_mathop(__log1p, lognp1)
6025c399 RM	88	__inline_mathop(__significand, getman)
6025c399 RM	89
4cca6b86 UD	90	__inline_mathop(__log2, log2)
4cca6b86 UD	91	__inline_mathop(__exp2, twotox)
22d57dd3	92	__inline_mathop(__trunc, intrz)
4cca6b86	93
377a515b UD	94	#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
	95
	96	__inline_mathop(atan, atan)
	97	__inline_mathop(cos, cos)
	98	__inline_mathop(sin, sin)
	99	__inline_mathop(tan, tan)
	100	__inline_mathop(tanh, tanh)
377a515b	101
4cca6b86	102	#if defined __USE_MISC \|\| defined __USE_XOPEN_EXTENDED \|\| defined __USE_ISOC9X
377a515b UD	103	__inline_mathop(rint, int)
	104	__inline_mathop(expm1, etoxm1)
	105	__inline_mathop(log1p, lognp1)
377a515b UD	106	#endif
	107
	108	#ifdef __USE_MISC
	109	__inline_mathop(significand, getman)
	110	#endif
	111
4cca6b86 UD	112	#ifdef __USE_ISOC9X
	113	__inline_mathop(log2, log2)
	114	__inline_mathop(exp2, twotox)
22d57dd3	115	__inline_mathop(trunc, intrz)
4cca6b86 UD	116	#endif
4cca6b86 UD	117
377a515b UD	118	#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
377a515b UD	119
ec4b0518 UD	120	/* This macro contains the definition for the rest of the inline
	121	functions, using __FLOAT_TYPE as the domain type and __S as the suffix
	122	for the function names. */
	123
377a515b UD	124	#ifdef __LIBC_M81_MATH_INLINES
	125	/* Internally used functions. */
	126	#define __internal_inline_functions(float_type, s) \
	127	__m81_defun (float_type, __CONCAT(__ieee754_remainder,s), \
	128	(float_type __x, float_type __y)) \
ec4b0518	129	{ \
377a515b	130	float_type __result; \
ec4b0518 UD	131	__asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); \
	132	return __result; \
	133	} \
	134	\
377a515b UD	135	__m81_defun (float_type, __CONCAT(__ieee754_fmod,s), \
377a515b UD	136	(float_type __x, float_type __y)) \
ec4b0518	137	{ \
377a515b	138	float_type __result; \
ec4b0518 UD	139	__asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); \
ec4b0518 UD	140	return __result; \
377a515b UD	141	}
	142
	143	__internal_inline_functions (double,)
	144	__internal_inline_functions (float,f)
	145	__internal_inline_functions (long double,l)
	146	#undef __internal_inline_functions
	147
51702635 UD	148	/* Get the m68881 condition codes, to quickly check multiple conditions. */
	149	static __inline__ unsigned long
	150	__m81_test (long double __val)
	151	{
	152	unsigned long __fpsr;
	153	__asm ("ftst%.x %1; fmove%.l %/fpsr,%0" : "=dm" (__fpsr) : "f" (__val));
	154	return __fpsr;
	155	}
	156
	157	/* Bit values returned by __m81_test. */
	158	#define __M81_COND_NAN (1 << 24)
	159	#define __M81_COND_INF (2 << 24)
	160	#define __M81_COND_ZERO (4 << 24)
	161	#define __M81_COND_NEG (8 << 24)
	162
377a515b UD	163	#endif /* __LIBC_M81_MATH_INLINES */
	164
	165	/* The rest of the functions are available to the user. */
	166
22d57dd3 UD	167	#define __inline_functions(float_type, s) \
	168	__m81_inline float_type \
	169	__m81_u(__CONCAT(__frexp,s))(float_type __value, int *__expptr) \
	170	{ \
	171	float_type __mantissa, __exponent; \
	172	int __iexponent; \
51702635 UD	173	unsigned long __fpsr; \
	174	__asm("ftst%.x %1\n" \
	175	"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \
	176	if (__fpsr & (7 << 24)) \
22d57dd3	177	{ \
51702635	178	/* Not finite or zero. */ \
22d57dd3 UD	179	*__expptr = 0; \
	180	return __value; \
	181	} \
	182	__asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); \
	183	__iexponent = (int) __exponent + 1; \
	184	*__expptr = __iexponent; \
	185	__asm("fscale%.l %2, %0" : "=f" (__mantissa) \
	186	: "0" (__value), "dmi" (-__iexponent)); \
	187	return __mantissa; \
	188	} \
	189	\
	190	__m81_defun (float_type, __CONCAT(__floor,s), (float_type __x)) \
	191	{ \
	192	float_type __result; \
	193	unsigned long int __ctrl_reg; \
	194	__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg)); \
	195	/* Set rounding towards negative infinity. */ \
	196	__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \
	197	: "dmi" ((__ctrl_reg & ~0x10) \| 0x20)); \
	198	/* Convert X to an integer, using -Inf rounding. */ \
	199	__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); \
	200	/* Restore the previous rounding mode. */ \
	201	__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \
	202	: "dmi" (__ctrl_reg)); \
	203	return __result; \
	204	} \
	205	\
	206	__m81_defun (float_type, __CONCAT(__ceil,s), (float_type __x)) \
	207	{ \
	208	float_type __result; \
	209	unsigned long int __ctrl_reg; \
	210	__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg)); \
	211	/* Set rounding towards positive infinity. */ \
	212	__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \
	213	: "dmi" (__ctrl_reg \| 0x30)); \
	214	/* Convert X to an integer, using +Inf rounding. */ \
	215	__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); \
	216	/* Restore the previous rounding mode. */ \
	217	__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \
	218	: "dmi" (__ctrl_reg)); \
	219	return __result; \
	220	} \
	221	\
	222	__m81_defun (int, __CONCAT(__isinf,s), (float_type __value)) \
	223	{ \
	224	/* There is no branch-condition for infinity, \
	225	so we must extract and examine the condition codes manually. */ \
	226	unsigned long int __fpsr; \
	227	__asm("ftst%.x %1\n" \
	228	"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \
	229	return (__fpsr & (2 << 24)) ? (__fpsr & (8 << 24) ? -1 : 1) : 0; \
	230	} \
	231	\
	232	__m81_defun (int, __CONCAT(__isnan,s), (float_type __value)) \
	233	{ \
	234	char __result; \
	235	__asm("ftst%.x %1\n" \
	236	"fsun %0" : "=dm" (__result) : "f" (__value)); \
	237	return __result; \
	238	} \
	239	\
	240	__m81_defun (int, __CONCAT(__finite,s), (float_type __value)) \
	241	{ \
	242	/* There is no branch-condition for infinity, so we must extract and \
243	examine the condition codes manually. */ \
244	unsigned long int __fpsr; \
245	__asm ("ftst%.x %1\n" \
246	"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \
247	return (__fpsr & (3 << 24)) == 0; \
248	} \
249	\
250	__m81_defun (int, __CONCAT(__signbit,s), (float_type __value)) \
251	{ \
252	/* There is no branch-condition for the sign bit, so we must extract \
253	and examine the condition codes manually. */ \
254	unsigned long int __fpsr; \
255	__asm ("ftst%.x %1\n" \
256	"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value)); \
257	return (__fpsr >> 27) & 1; \
258	} \
259	\
260	__m81_defun (int, __CONCAT(__ilogb,s), (float_type __x)) \
261	{ \
262	float_type __result; \
478b92f0 UD	263	if (__m81_u(__CONCAT(__isnan,s)) (__x)) \
	264	/* The stupid standard requires us to return a specific value where \
	265	it would depend on the bitpattern of the NaN. */ \
	266	return 0x7fffffff; \
22d57dd3 UD	267	__asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x)); \
	268	return (int) __result; \
	269	} \
	270	\
478b92f0 UD	271	__m81_defun (float_type, __CONCAT(__scalbn,s), \
478b92f0 UD	272	(float_type __x, long int __n)) \
22d57dd3 UD	273	{ \
	274	float_type __result; \
	275	__asm ("fscale%.l %1, %0" : "=f" (__result) : "dmi" (__n), "0" (__x)); \
	276	return __result; \
	277	} \
	278	\
	279	__m81_defun (float_type, __CONCAT(__nearbyint,s), (float_type __x)) \
	280	{ \
	281	float_type __result; \
	282	unsigned long int __ctrl_reg; \
	283	__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg)); \
	284	/* Temporarily disable the inexact exception. */ \
	285	__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \
	286	: "dmi" (__ctrl_reg & ~0x200)); \
	287	__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x)); \
	288	__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */ \
	289	: "dmi" (__ctrl_reg)); \
	290	return __result; \
b4012b75 UD	291	} \
	292	\
	293	__m81_inline void \
	294	__m81_u(__CONCAT(__sincos,s))(float_type __x, float_type *__sinx, \
	295	float_type *__cosx) \
	296	{ \
	297	__asm ("fsincos%.x %2,%1:%0" \
	298	: "=f" (__sinx), "=f" (__cosx) : "f" (__x)); \
ec4b0518 UD	299	}
	300
	301	/* This defines the three variants of the inline functions. */
377a515b UD	302	__inline_functions (double,)
	303	__inline_functions (float,f)
	304	__inline_functions (long double,l)
ec4b0518	305	#undef __inline_functions
8f30ca23	306
d705269e	307	__m81_defun (long int, __lrint, (long double __x))
63551311 UD	308	{
	309	long int __result;
	310	__asm ("fmove%.l %1, %0" : "=dm" (__result) : "f" (__x));
	311	return __result;
	312	}
	313
377a515b UD	314	#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
	315
	316	/* Define inline versions of the user visible functions. */
	317
	318	#define __inline_forward_c(rettype, name, args1, args2) \
	319	extern __inline rettype __attribute__((__const__)) \
	320	name args1 \
	321	{ \
	322	return __CONCAT(__,name) args2; \
	323	}
	324
	325	#define __inline_forward(rettype, name, args1, args2) \
	326	extern __inline rettype name args1 \
	327	{ \
	328	return __CONCAT(__,name) args2; \
	329	}
	330
	331	__inline_forward(double,frexp, (double __value, int *__expptr),
	332	(__value, __expptr))
	333	__inline_forward_c(double,floor, (double __x), (__x))
	334	__inline_forward_c(double,ceil, (double __x), (__x))
377a515b UD	335	#ifdef __USE_MISC
	336	__inline_forward_c(int,isinf, (double __value), (__value))
	337	__inline_forward_c(int,finite, (double __value), (__value))
478b92f0	338	__inline_forward_c(double,scalbn, (double __x, long int __n), (__x, __n))
377a515b UD	339	#endif
377a515b UD	340	#if defined __USE_MISC \|\| defined __USE_XOPEN
4cca6b86	341	#ifndef __USE_ISOC9X /* Conflict with macro of same name. */
377a515b	342	__inline_forward_c(int,isnan, (double __value), (__value))
4cca6b86	343	#endif
377a515b UD	344	__inline_forward_c(int,ilogb, (double __value), (__value))
377a515b UD	345	#endif
22d57dd3 UD	346	#ifdef __USE_ISOC9X
	347	__inline_forward_c(double,nearbyint, (double __value), (__value))
	348	#endif
b4012b75 UD	349	#ifdef __USE_GNU
	350	__inline_forward(void,sincos, (double __x, double __sinx, double __cosx),
	351	(__x, __sinx, __cosx))
	352	#endif
377a515b	353
4cca6b86	354	#if defined __USE_MISC \|\| defined __USE_ISOC9X
377a515b UD	355
	356	__inline_forward(float,frexpf, (float __value, int *__expptr),
	357	(__value, __expptr))
	358	__inline_forward_c(float,floorf, (float __x), (__x))
	359	__inline_forward_c(float,ceilf, (float __x), (__x))
4cca6b86	360	#ifdef __USE_MISC
377a515b UD	361	__inline_forward_c(int,isinff, (float __value), (__value))
377a515b UD	362	__inline_forward_c(int,finitef, (float __value), (__value))
478b92f0	363	__inline_forward_c(float,scalbnf, (float __x, long int __n), (__x, __n))
377a515b UD	364	__inline_forward_c(int,isnanf, (float __value), (__value))
377a515b UD	365	__inline_forward_c(int,ilogbf, (float __value), (__value))
4cca6b86	366	#endif
22d57dd3 UD	367	#ifdef __USE_ISOC9X
	368	__inline_forward_c(float,nearbyintf, (float __value), (__value))
	369	#endif
b4012b75 UD	370	#ifdef __USE_GNU
	371	__inline_forward(void,sincosf, (float __x, float __sinx, float __cosx),
	372	(__x, __sinx, __cosx))
	373	#endif
377a515b UD	374
	375	__inline_forward(long double,frexpl, (long double __value, int *__expptr),
	376	(__value, __expptr))
	377	__inline_forward_c(long double,floorl, (long double __x), (__x))
	378	__inline_forward_c(long double,ceill, (long double __x), (__x))
4cca6b86	379	#ifdef __USE_MISC
377a515b UD	380	__inline_forward_c(int,isinfl, (long double __value), (__value))
377a515b UD	381	__inline_forward_c(int,finitel, (long double __value), (__value))
478b92f0	382	__inline_forward_c(long double,scalbnl, (long double __x, long int __n),
377a515b UD	383	(__x, __n))
	384	__inline_forward_c(int,isnanl, (long double __value), (__value))
	385	__inline_forward_c(int,ilogbl, (long double __value), (__value))
4cca6b86	386	#endif
22d57dd3 UD	387	#ifdef __USE_ISOC9X
22d57dd3 UD	388	__inline_forward_c(long double,nearbyintl, (long double __value), (__value))
d705269e	389	__inline_forward_c(long int,lrint, (long double __value), (__value))
22d57dd3	390	#endif
b4012b75 UD	391	#ifdef __USE_GNU
	392	__inline_forward(void,sincosl,
	393	(long double __x, long double __sinx, long double __cosx),
	394	(__x, __sinx, __cosx))
	395	#endif
377a515b	396
4cca6b86	397	#endif /* Use misc or ISO C9X */
377a515b UD	398
	399	#undef __inline_forward
	400	#undef __inline_forward_c
	401
b4012b75 UD	402	#ifdef __USE_ISOC9X
	403
	404	/* ISO C 9X defines some macros to perform unordered comparisons. The
	405	m68k FPU supports this with special opcodes and we should use them.
	406	These must not be inline functions since we have to be able to handle
	407	all floating-point types. */
	408	#undef isgreater
	409	#define isgreater(x, y) \
	410	__extension__ \
	411	({ char __result; \
5649a1d6	412	__asm__ ("fcmp%.x %2,%1; fsogt %0" \
b4012b75 UD	413	: "=dm" (__result) : "f" (x), "f" (y)); \
	414	(int) __result; })
	415
	416	#undef isgreaterequal
	417	#define isgreaterequal(x, y) \
	418	__extension__ \
	419	({ char __result; \
5649a1d6	420	__asm__ ("fcmp%.x %2,%1; fsoge %0" \
b4012b75 UD	421	: "=dm" (__result) : "f" (x), "f" (y)); \
	422	(int) __result; })
	423
	424	#undef isless
	425	#define isless(x, y) \
	426	__extension__ \
	427	({ char __result; \
5649a1d6	428	__asm__ ("fcmp%.x %2,%1; fsolt %0" \
b4012b75 UD	429	: "=dm" (__result) : "f" (x), "f" (y)); \
	430	(int) __result; })
	431
	432	#undef islessequal
	433	#define islessequal(x, y) \
	434	__extension__ \
	435	({ char __result; \
5649a1d6	436	__asm__ ("fcmp%.x %2,%1; fsole %0" \
b4012b75 UD	437	: "=dm" (__result) : "f" (x), "f" (y)); \
	438	(int) __result; })
	439
	440	#undef islessgreater
	441	#define islessgreater(x, y) \
	442	__extension__ \
	443	({ char __result; \
5649a1d6	444	__asm__ ("fcmp%.x %2,%1; fsogl %0" \
b4012b75 UD	445	: "=dm" (__result) : "f" (x), "f" (y)); \
	446	(int) __result; })
	447
	448	#undef isunordered
	449	#define isunordered(x, y) \
	450	__extension__ \
	451	({ char __result; \
5649a1d6	452	__asm__ ("fcmp%.x %2,%1; fsun %0" \
b4012b75 UD	453	: "=dm" (__result) : "f" (x), "f" (y)); \
	454	(int) __result; })
	455	#endif
	456
377a515b UD	457	#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
377a515b UD	458
28f540f4	459	#endif /* GCC. */