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Diffstat (limited to 'sysdeps/m68k/fpu/bits/mathinline.h')
| -rw-r--r-- | sysdeps/m68k/fpu/bits/mathinline.h | 445 |
1 files changed, 445 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/bits/mathinline.h b/sysdeps/m68k/fpu/bits/mathinline.h new file mode 100644 index 0000000000..acbac47aac --- /dev/null +++ b/sysdeps/m68k/fpu/bits/mathinline.h @@ -0,0 +1,445 @@ +/* Definitions of inline math functions implemented by the m68881/2. + Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002, 2003, 2004 + 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 +/* GCC 3.1 and up have builtins that actually can be used. */ +# if !__GNUC_PREREQ (3,1) +/* 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. */ +# undef isgreater +# undef isgreaterequal +# undef isless +# undef islessequal +# undef islessgreater +# undef isunordered +# 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)) \ + { \ + 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_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; \ +} + +__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)) \ +{ \ + /* 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)) \ +{ \ + /* 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)) \ +{ \ + 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)) \ +{ \ + 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)) \ +{ \ + /* 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)) \ +{ \ + return __CONCAT(__scalbn,s) (__x, __n); \ +} \ + \ +__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_defun (long int, __CONCAT(__lrint,s), (float_type __x)) \ +{ \ + 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) \ +{ \ + 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) \ +{ \ + __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 \ +{ \ + return __CONCAT(__,name) args2; \ +} + +# define __inline_forward(rettype, name, args1, args2) \ +extern __inline rettype name args1 \ +{ \ + return __CONCAT(__,name) args2; \ +} + +__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_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_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. */ |