mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
m68k specific math inline functions.
This commit is contained in:
Ulrich Drepper
parent
b3539abf29
commit
ef8a52eeee
464
sysdeps/m68k/fpu/bits/mathinline.h
Normal file
464
sysdeps/m68k/fpu/bits/mathinline.h
Normal file
@ -0,0 +1,464 @@
|
||||
/* 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; \
|
||||
} \
|
||||
\
|
||||
__m81_defun (float_type, __CONCAT(__ieee754_scalb,s), \
|
||||
(float_type __x, float_type __n)) \
|
||||
{ \
|
||||
float_type __result; \
|
||||
__asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "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 (__x == 0.0) \
|
||||
return 0x80000001; \
|
||||
__asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x)); \
|
||||
return (int) __result; \
|
||||
} \
|
||||
\
|
||||
__m81_defun (float_type, __CONCAT(__scalbn,s), (float_type __x, 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, 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, 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, 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. */
|
||||
Loading…
Reference in New Issue
Block a user