mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-05 03:01:05 +00:00
27c70fd041
(isless, islessequal, islessgreater, isunordered) [GCC >= 3.1]: Use GCC builtins.
475 lines
16 KiB
C
475 lines
16 KiB
C
/* Definitions of inline math functions implemented by the m68881/2.
|
|
Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifdef __GNUC__
|
|
|
|
#ifdef __USE_ISOC99
|
|
|
|
# if __GNUC_PREREQ (3,1)
|
|
/* GCC 3.1 and up have builtins that actually can be used. */
|
|
# define isgreater(x, y) __builtin_isgreater (x, y)
|
|
# define isgreaterequal(x, y) __builtin_isgreaterequal (x, y)
|
|
# define isless(x, y) __builtin_isless (x, y)
|
|
# define islessequal(x, y) __builtin_islessequal (x, y)
|
|
# define islessgreater(x, y) __builtin_islessgreater (x, y)
|
|
# define isunordered(x, y) __builtin_isunordered (x, y)
|
|
# else
|
|
/* ISO C99 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. */
|
|
# define isgreater(x, y) \
|
|
__extension__ \
|
|
({ char __result; \
|
|
__asm__ ("fcmp%.x %2,%1; fsogt %0" \
|
|
: "=dm" (__result) : "f" (x), "f" (y)); \
|
|
__result != 0; })
|
|
|
|
# define isgreaterequal(x, y) \
|
|
__extension__ \
|
|
({ char __result; \
|
|
__asm__ ("fcmp%.x %2,%1; fsoge %0" \
|
|
: "=dm" (__result) : "f" (x), "f" (y)); \
|
|
__result != 0; })
|
|
|
|
# define isless(x, y) \
|
|
__extension__ \
|
|
({ char __result; \
|
|
__asm__ ("fcmp%.x %2,%1; fsolt %0" \
|
|
: "=dm" (__result) : "f" (x), "f" (y)); \
|
|
__result != 0; })
|
|
|
|
# define islessequal(x, y) \
|
|
__extension__ \
|
|
({ char __result; \
|
|
__asm__ ("fcmp%.x %2,%1; fsole %0" \
|
|
: "=dm" (__result) : "f" (x), "f" (y)); \
|
|
__result != 0; })
|
|
|
|
# define islessgreater(x, y) \
|
|
__extension__ \
|
|
({ char __result; \
|
|
__asm__ ("fcmp%.x %2,%1; fsogl %0" \
|
|
: "=dm" (__result) : "f" (x), "f" (y)); \
|
|
__result != 0; })
|
|
|
|
# define isunordered(x, y) \
|
|
__extension__ \
|
|
({ char __result; \
|
|
__asm__ ("fcmp%.x %2,%1; fsun %0" \
|
|
: "=dm" (__result) : "f" (x), "f" (y)); \
|
|
__result != 0; })
|
|
# endif /* GCC 3.1 */
|
|
#endif
|
|
|
|
|
|
#if (!defined __NO_MATH_INLINES && defined __OPTIMIZE__) \
|
|
|| defined __LIBC_INTERNAL_MATH_INLINES
|
|
|
|
#ifdef __LIBC_INTERNAL_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
|
|
# ifdef __cplusplus
|
|
# define __m81_inline __inline
|
|
# else
|
|
# define __m81_inline extern __inline
|
|
# endif
|
|
# 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_ISOC99
|
|
# 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)) __THROW \
|
|
{ \
|
|
float_type __result; \
|
|
__asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
|
|
return __result; \
|
|
}
|
|
|
|
__inline_mathop(__atan, atan)
|
|
__inline_mathop(__cos, cos)
|
|
__inline_mathop(__sin, sin)
|
|
__inline_mathop(__tan, tan)
|
|
__inline_mathop(__tanh, tanh)
|
|
__inline_mathop(__fabs, abs)
|
|
|
|
#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
|
|
__inline_mathop(__rint, int)
|
|
__inline_mathop(__expm1, etoxm1)
|
|
__inline_mathop(__log1p, lognp1)
|
|
#endif
|
|
|
|
#ifdef __USE_MISC
|
|
__inline_mathop(__significand, getman)
|
|
#endif
|
|
|
|
#ifdef __USE_ISOC99
|
|
__inline_mathop(__trunc, intrz)
|
|
#endif
|
|
|
|
#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_ISOC99
|
|
__inline_mathop(rint, int)
|
|
__inline_mathop(expm1, etoxm1)
|
|
__inline_mathop(log1p, lognp1)
|
|
# endif
|
|
|
|
# ifdef __USE_MISC
|
|
__inline_mathop(significand, getman)
|
|
# endif
|
|
|
|
# ifdef __USE_ISOC99
|
|
__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. */
|
|
|
|
#define __inline_functions(float_type, s) \
|
|
__m81_inline float_type \
|
|
__m81_u(__CONCAT(__frexp,s))(float_type __value, int *__expptr) __THROW \
|
|
{ \
|
|
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)) __THROW \
|
|
{ \
|
|
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)) __THROW \
|
|
{ \
|
|
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; \
|
|
}
|
|
|
|
__inline_functions(double,)
|
|
#if defined __USE_MISC || defined __USE_ISOC99
|
|
__inline_functions(float,f)
|
|
__inline_functions(long double,l)
|
|
#endif
|
|
#undef __inline_functions
|
|
|
|
#ifdef __USE_MISC
|
|
|
|
# define __inline_functions(float_type, s) \
|
|
__m81_defun (int, __CONCAT(__isinf,s), (float_type __value)) __THROW \
|
|
{ \
|
|
/* 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(__finite,s), (float_type __value)) __THROW \
|
|
{ \
|
|
/* 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 (float_type, __CONCAT(__scalbn,s), \
|
|
(float_type __x, int __n)) __THROW \
|
|
{ \
|
|
float_type __result; \
|
|
__asm ("fscale%.l %1, %0" : "=f" (__result) : "dmi" (__n), "0" (__x)); \
|
|
return __result; \
|
|
}
|
|
|
|
__inline_functions(double,)
|
|
__inline_functions(float,f)
|
|
__inline_functions(long double,l)
|
|
# undef __inline_functions
|
|
|
|
#endif /* Use misc. */
|
|
|
|
#if defined __USE_MISC || defined __USE_XOPEN
|
|
|
|
# define __inline_functions(float_type, s) \
|
|
__m81_defun (int, __CONCAT(__isnan,s), (float_type __value)) __THROW \
|
|
{ \
|
|
char __result; \
|
|
__asm("ftst%.x %1\n" \
|
|
"fsun %0" : "=dm" (__result) : "f" (__value)); \
|
|
return __result; \
|
|
}
|
|
|
|
__inline_functions(double,)
|
|
# ifdef __USE_MISC
|
|
__inline_functions(float,f)
|
|
__inline_functions(long double,l)
|
|
# endif
|
|
# undef __inline_functions
|
|
|
|
#endif
|
|
|
|
#ifdef __USE_ISOC99
|
|
|
|
# define __inline_functions(float_type, s) \
|
|
__m81_defun (int, __CONCAT(__signbit,s), (float_type __value)) __THROW \
|
|
{ \
|
|
/* 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 (float_type, __CONCAT(__scalbln,s), \
|
|
(float_type __x, long int __n)) __THROW \
|
|
{ \
|
|
return __CONCAT(__scalbn,s) (__x, __n); \
|
|
} \
|
|
\
|
|
__m81_defun (float_type, __CONCAT(__nearbyint,s), (float_type __x)) __THROW \
|
|
{ \
|
|
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_defun (long int, __CONCAT(__lrint,s), (float_type __x)) __THROW \
|
|
{ \
|
|
long int __result; \
|
|
__asm ("fmove%.l %1, %0" : "=dm" (__result) : "f" (__x)); \
|
|
return __result; \
|
|
} \
|
|
\
|
|
__m81_inline float_type \
|
|
__m81_u(__CONCAT(__fma,s))(float_type __x, float_type __y, \
|
|
float_type __z) __THROW \
|
|
{ \
|
|
return (__x * __y) + __z; \
|
|
}
|
|
|
|
__inline_functions (double,)
|
|
__inline_functions (float,f)
|
|
__inline_functions (long double,l)
|
|
# undef __inline_functions
|
|
|
|
#endif /* Use ISO C9x */
|
|
|
|
#ifdef __USE_GNU
|
|
|
|
# define __inline_functions(float_type, s) \
|
|
__m81_inline void \
|
|
__m81_u(__CONCAT(__sincos,s))(float_type __x, float_type *__sinx, \
|
|
float_type *__cosx) __THROW \
|
|
{ \
|
|
__asm ("fsincos%.x %2,%1:%0" \
|
|
: "=f" (*__sinx), "=f" (*__cosx) : "f" (__x)); \
|
|
}
|
|
|
|
__inline_functions (double,)
|
|
__inline_functions (float,f)
|
|
__inline_functions (long double,l)
|
|
# undef __inline_functions
|
|
|
|
#endif
|
|
|
|
#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
|
|
|
|
/* Define inline versions of the user visible functions. */
|
|
|
|
/* Note that there must be no whitespace before the argument passed for
|
|
NAME, to make token pasting work correctly with -traditional. */
|
|
# define __inline_forward_c(rettype, name, args1, args2) \
|
|
extern __inline rettype __attribute__((__const__)) \
|
|
name args1 __THROW \
|
|
{ \
|
|
return __CONCAT(__,name) args2; \
|
|
}
|
|
|
|
# define __inline_forward(rettype, name, args1, args2) \
|
|
extern __inline rettype name args1 __THROW \
|
|
{ \
|
|
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
|
|
# ifndef __USE_ISOC99 /* Conflict with macro of same name. */
|
|
__inline_forward_c(int,isinf, (double __value), (__value))
|
|
# endif
|
|
__inline_forward_c(int,finite, (double __value), (__value))
|
|
__inline_forward_c(double,scalbn, (double __x, int __n), (__x, __n))
|
|
# endif
|
|
# if defined __USE_MISC || defined __USE_XOPEN
|
|
# ifndef __USE_ISOC99 /* Conflict with macro of same name. */
|
|
__inline_forward_c(int,isnan, (double __value), (__value))
|
|
# endif
|
|
# endif
|
|
# ifdef __USE_ISOC99
|
|
__inline_forward_c(double,scalbln, (double __x, long int __n), (__x, __n))
|
|
__inline_forward_c(double,nearbyint, (double __value), (__value))
|
|
__inline_forward_c(long int,lrint, (double __value), (__value))
|
|
__inline_forward_c(double,fma, (double __x, double __y, double __z),
|
|
(__x, __y, __z))
|
|
# endif
|
|
# ifdef __USE_GNU
|
|
__inline_forward(void,sincos, (double __x, double *__sinx, double *__cosx),
|
|
(__x, __sinx, __cosx))
|
|
# endif
|
|
|
|
# if defined __USE_MISC || defined __USE_ISOC99
|
|
|
|
__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, int __n), (__x, __n))
|
|
__inline_forward_c(int,isnanf, (float __value), (__value))
|
|
# endif
|
|
# ifdef __USE_ISOC99
|
|
__inline_forward_c(float,scalblnf, (float __x, long int __n), (__x, __n))
|
|
__inline_forward_c(float,nearbyintf, (float __value), (__value))
|
|
__inline_forward_c(long int,lrintf, (float __value), (__value))
|
|
__inline_forward_c(float,fmaf, (float __x, float __y, float __z),
|
|
(__x, __y, __z))
|
|
# 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, int __n), (__x, __n))
|
|
__inline_forward_c(int,isnanl, (long double __value), (__value))
|
|
# endif
|
|
# ifdef __USE_ISOC99
|
|
__inline_forward_c(long double,scalblnl, (long double __x, long int __n),
|
|
(__x, __n))
|
|
__inline_forward_c(long double,nearbyintl, (long double __value), (__value))
|
|
__inline_forward_c(long int,lrintl, (long double __value), (__value))
|
|
__inline_forward_c(long double,fmal,
|
|
(long double __x, long double __y, long double __z),
|
|
(__x, __y, __z))
|
|
# 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 C99 */
|
|
|
|
#undef __inline_forward
|
|
#undef __inline_forward_c
|
|
|
|
#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
|
|
|
|
#endif
|
|
#endif /* GCC. */
|