diff options
Diffstat (limited to 'sysdeps/m68k/fpu/__math.h')
| -rw-r--r-- | sysdeps/m68k/fpu/__math.h | 775 |
1 files changed, 231 insertions, 544 deletions
diff --git a/sysdeps/m68k/fpu/__math.h b/sysdeps/m68k/fpu/__math.h index 4992aea561..0e3e2a3d8c 100644 --- a/sysdeps/m68k/fpu/__math.h +++ b/sysdeps/m68k/fpu/__math.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc. +/* Copyright (C) 1991, 92, 93, 94, 96 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 @@ -39,30 +39,30 @@ Cambridge, MA 02139, USA. */ __m81_inline rettype \ __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). */ #define __inline_mathop(func, op) \ __m81_defun (double, func, (double __mathop_x)) \ { \ double __result; \ __asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\ return __result; \ - } - -#define __inline_mathopf(func, op) \ - __m81_defun (float, func, (float __mathop_x)) \ + } \ + __m81_defun (float, func##f, (float __mathop_x)) \ { \ float __result; \ __asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\ return __result; \ - } - -#define __inline_mathopl(func, op) \ - __m81_defun (long double, func, (long double __mathop_x)) \ + } \ + __m81_defun (long double, func##l, (long double __mathop_x)) \ { \ long double __result; \ __asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\ return __result; \ } - + /* ieee style elementary functions */ __inline_mathop(__ieee754_acos, acos) __inline_mathop(__ieee754_asin, asin) @@ -74,28 +74,6 @@ __inline_mathop(__ieee754_log, logn) __inline_mathop(__ieee754_sqrt, sqrt) __inline_mathop(__ieee754_atanh, atanh) -/* ieee style elementary float functions */ -__inline_mathopf(__ieee754_acosf, acos) -__inline_mathopf(__ieee754_asinf, asin) -__inline_mathopf(__ieee754_coshf, cosh) -__inline_mathopf(__ieee754_sinhf, sinh) -__inline_mathopf(__ieee754_expf, etox) -__inline_mathopf(__ieee754_log10f, log10) -__inline_mathopf(__ieee754_logf, logn) -__inline_mathopf(__ieee754_sqrtf, sqrt) -__inline_mathopf(__ieee754_atanhf, atan) - -/* ieee style elementary long double functions */ -__inline_mathopl(__ieee754_acosl, acos) -__inline_mathopl(__ieee754_asinl, asin) -__inline_mathopl(__ieee754_coshl, cosh) -__inline_mathopl(__ieee754_sinhl, sinh) -__inline_mathopl(__ieee754_expl, etox) -__inline_mathopl(__ieee754_log10l, log10) -__inline_mathopl(__ieee754_logl, logn) -__inline_mathopl(__ieee754_sqrtl, sqrt) -__inline_mathopl(__ieee754_atanhl, atan) - __inline_mathop(__atan, atan) __inline_mathop(__cos, cos) __inline_mathop(__sin, sin) @@ -110,517 +88,226 @@ __inline_mathop(__log1p, lognp1) __inline_mathop(__logb, log2) __inline_mathop(__significand, getman) -__inline_mathopf(__atanf, atan) -__inline_mathopf(__cosf, cos) -__inline_mathopf(__sinf, sin) -__inline_mathopf(__tanf, tan) -__inline_mathopf(__tanhf, tanh) -__inline_mathopf(__fabsf, abs) -__inline_mathopf(__sqrtf, sqrt) - -__inline_mathopf(__rintf, int) -__inline_mathopf(__expm1f, etoxm1) -__inline_mathopf(__log1pf, lognp1) -__inline_mathopf(__logbf, log2) -__inline_mathopf(__significandf, getman) - -__inline_mathopl(__atanl, atan) -__inline_mathopl(__cosl, cos) -__inline_mathopl(__sinl, sin) -__inline_mathopl(__tanl, tan) -__inline_mathopl(__tanhl, tanh) -__inline_mathopl(__fabsl, abs) -__inline_mathopl(__sqrtl, sqrt) - -__inline_mathopl(__rintl, int) -__inline_mathopl(__expm1l, etoxm1) -__inline_mathopl(__log1pl, lognp1) -__inline_mathopl(__logbl, log2) -__inline_mathopl(__significandl, getman) - -__m81_defun (double, __ieee754_remainder, (double __x, double __y)) -{ - double __result; - __asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); - return __result; -} - -__m81_defun (double, __ldexp, (double __x, int __e)) -{ - double __result; - double __double_e = (double) __e; - __asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_e), "0" (__x)); - return __result; -} - -__m81_defun (double, __ieee754_fmod, (double __x, double __y)) -{ - double __result; - __asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); - return __result; -} - -__m81_inline double -__m81_u(__frexp)(double __value, int *__expptr) -{ - double __mantissa, __exponent; - __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); - __asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value)); - *__expptr = (int) __exponent; - return __mantissa; -} - -__m81_defun (double, __floor, (double __x)) -{ - double __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 (double, __ieee754_pow, (double __x, double __y)) -{ - double __result; - if (__x == 0.0) - { - if (__y <= 0.0) - __result = 0.0 / 0.0; - else - __result = 0.0; - } - else if (__y == 0.0 || __x == 1.0) - __result = 1.0; - else if (__y == 1.0) - __result = __x; - else if (__y == 2.0) - __result = __x * __x; - else if (__x == 10.0) - __asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y)); - else if (__x == 2.0) - __asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y)); - else if (__x < 0.0) - { - double __temp = __m81_u (__rint) (__y); - if (__y == __temp) - { - int i = (int) __y; - __result = __m81_u(__ieee754_exp)(__y * __m81_u(__ieee754_log)(-__x)); - if (i & 1) - __result = -__result; - } - else - __result = 0.0 / 0.0; - } - else - __result = __m81_u(__ieee754_exp)(__y * __m81_u(__ieee754_log)(__x)); - return __result; -} - -__m81_defun (double, __ceil, (double __x)) -{ - double __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_inline double -__m81_u(__modf)(double __value, double *__iptr) -{ - double __modf_int; - __asm ("fintrz%.x %1, %0" : "=f" (__modf_int) : "f" (__value)); - *__iptr = __modf_int; - return __value - __modf_int; -} - -__m81_defun (int, __isinf, (double __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, __isnan, (double __value)) -{ - char __result; - __asm("ftst%.x %1\n" - "fsun %0" : "=dm" (__result) : "f" (__value)); - return __result; -} - -__m81_defun (int, __finite, (double __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, __ilogb, (double __x)) -{ - double __result; - __asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x)); - return (int) __result; -} - -__m81_defun (double, __ieee754_scalb, (double __x, double __n)) -{ - double __result; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "0" (__x)); - return __result; -} - -__m81_defun (double, __scalbn, (double __x, int __n)) -{ - double __result; - double __double_n = (double) __n; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_n), "0" (__x)); - return __result; -} - -__m81_defun (float, __ieee754_remainderf, (float __x, float __y)) -{ - float __result; - __asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); - return __result; -} - -__m81_defun (float, __ldexpf, (float __x, int __e)) -{ - float __result; - float __float_e = (float) __e; - __asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__float_e), "0" (__x)); - return __result; -} - -__m81_defun (float, __ieee754_fmodf, (float __x, float __y)) -{ - float __result; - __asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); - return __result; -} - -__m81_inline float -__m81_u(__frexpf)(float __value, int *__expptr) -{ - float __mantissa, __exponent; - __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); - __asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value)); - *__expptr = (int) __exponent; - return __mantissa; -} - -__m81_defun (float, __floorf, (float __x)) -{ - float __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, __ieee754_powf, (float __x, float __y)) -{ - float __result; - if (__x == 0.0f) - { - if (__y <= 0.0f) - __result = 0.0f / 0.0f; - else - __result = 0.0f; - } - else if (__y == 0.0f || __x == 1.0f) - __result = 1.0; - else if (__y == 1.0f) - __result = __x; - else if (__y == 2.0f) - __result = __x * __x; - else if (__x == 10.0f) - __asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y)); - else if (__x == 2.0f) - __asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y)); - else if (__x < 0.0f) - { - float __temp = __m81_u(__rintf)(__y); - if (__y == __temp) - { - int i = (int) __y; - __result = __m81_u(__ieee754_expf)(__y * __m81_u(__ieee754_logf)(-__x)); - if (i & 1) - __result = -__result; - } - else - __result = 0.0f / 0.0f; - } - else - __result = __m81_u(__ieee754_expf)(__y * __m81_u(__ieee754_logf)(__x)); - return __result; -} - -__m81_defun (float, __ceilf, (float __x)) -{ - float __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_inline float -__m81_u(__modff)(float __value, float *__iptr) -{ - float __modf_int; - __asm ("fintrz%.x %1, %0" : "=f" (__modf_int) : "f" (__value)); - *__iptr = __modf_int; - return __value - __modf_int; -} - -__m81_defun (int, __isinff, (float __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, __isnanf, (float __value)) -{ - char __result; - __asm("ftst%.x %1\n" - "fsun %0" : "=dm" (__result) : "f" (__value)); - return __result; -} - -__m81_defun (int, __finitef, (float __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, __ilogbf, (float __x)) -{ - float __result; - __asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x)); - return (int) __result; -} - -__m81_defun (float, __ieee754_scalbf, (float __x, float __n)) -{ - float __result; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "0" (__x)); - return __result; -} - -__m81_defun (float, __scalbnf, (float __x, int __n)) -{ - float __result; - float __float_n = (float) __n; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__float_n), "0" (__x)); - return __result; -} - -__m81_defun (long double, __ieee754_remainderl, (long double __x, - long double __y)) -{ - long double __result; - __asm ("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); - return __result; -} - -__m81_defun (long double, __ldexpl, (long double __x, int __e)) -{ - long double __result; - long double __float_e = (long double) __e; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__float_e), "0" (__x)); - return __result; -} - -__m81_defun (long double, __ieee754_fmodl, (long double __x, long double __y)) -{ - long double __result; - __asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); - return __result; -} - -__m81_inline long double -__m81_u(__frexpl)(long double __value, int *__expptr) -{ - long double __mantissa, __exponent; - __asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value)); - __asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value)); - *__expptr = (int) __exponent; - return __mantissa; -} - -__m81_defun (long double, __floorl, (long double __x)) -{ - long double __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 (long double, __ieee754_powl, (long double __x, long double __y)) -{ - long double __result; - if (__x == 0.0l) - { - if (__y <= 0.0l) - __result = 0.0l / 0.0l; - else - __result = 0.0l; - } - else if (__y == 0.0l || __x == 1.0l) - __result = 1.0; - else if (__y == 1.0l) - __result = __x; - else if (__y == 2.0l) - __result = __x * __x; - else if (__x == 10.0l) - __asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y)); - else if (__x == 2.0l) - __asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y)); - else if (__x < 0.0l) - { - long double __temp = __m81_u(__rintl)(__y); - if (__y == __temp) - { - int i = (int) __y; - __result - = __m81_u(__ieee754_expl)(__y * __m81_u(__ieee754_logl)(-__x)); - if (i & 1) - __result = -__result; - } - else - __result = 0.0l / 0.0l; - } - else - __result = __m81_u(__ieee754_expl)(__y * __m81_u(__ieee754_logl)(__x)); - return __result; -} - -__m81_defun (long double, __ceill, (long double __x)) -{ - long double __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_inline long double -__m81_u(__modfl)(long double __value, long double *__iptr) -{ - long double __modf_int; - __asm ("fintrz%.x %1, %0" : "=f" (__modf_int) : "f" (__value)); - *__iptr = __modf_int; - return __value - __modf_int; -} - -__m81_defun (int, __isinfl, (long double __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, __isnanl, (long double __value)) -{ - char __result; - __asm("ftst%.x %1\n" - "fsun %0" : "=dm" (__result) : "f" (__value)); - return __result; -} - -__m81_defun (int, __finitel, (long double __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, __ilogbl, (long double __x)) -{ - long double __result; - __asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x)); - return (int) __result; -} - -__m81_defun (long double, __ieee754_scalbl, (long double __x, long double __n)) -{ - long double __result; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "0" (__x)); - return __result; -} - -__m81_defun (long double, __scalbnl, (long double __x, int __n)) -{ - long double __result; - long double __float_n = (long double) __n; - __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__float_n), "0" (__x)); - return __result; -} +/* 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, \ + __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, \ + __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, \ + __ieee754_atan2##__s, (__float_type __y, __float_type __x)) \ +{ \ + __float_type __pi, __pi_2; \ + \ + __asm ("fmovecr%.x %#0, %0" : "=f" (__pi)); \ + __asm ("fscale%.w %#-1, %0" : "=f" (__pi_2) : "0" (__pi)); \ + if (__x > 0) \ + { \ + if (__y > 0) \ + { \ + if (__x > __y) \ + return __m81_u(__atan##__s) (__y / __x); \ + else \ + return __pi_2 - __m81_u(__atan##__s) (__x / __y); \ + } \ + else \ + { \ + if (__x > -__y) \ + return __m81_u(__atan##__s) (__y / __x); \ + else \ + return -__pi_2 - __m81_u(__atan##__s) (__x / __y); \ + } \ + } \ + else \ + { \ + if (__y > 0) \ + { \ + if (-__x < __y) \ + return __pi + __m81_u(__atan##__s) (__y / __x); \ + else \ + return __pi_2 - __m81_u(__atan##__s) (__x / __y); \ + } \ + else \ + { \ + if (-__x > -__y) \ + return -__pi + __m81_u(__atan##__s) (__y / __x); \ + else \ + return -__pi_2 - __m81_u(__atan##__s) (__x / __y); \ + } \ + } \ +} \ + \ +__m81_inline __float_type \ +__m81_u(__frexp##__s)(__float_type __value, int *__expptr) \ +{ \ + __float_type __mantissa, __exponent; \ + int __iexponent; \ + if (__value == 0.0) \ + { \ + *__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, __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, \ + __ieee754_pow##__s, (__float_type __x, __float_type __y)) \ +{ \ + __float_type __result; \ + if (__x == 0.0) \ + { \ + if (__y <= 0.0) \ + __result = 0.0 / 0.0; \ + else \ + __result = 0.0; \ + } \ + else if (__y == 0.0 || __x == 1.0) \ + __result = 1.0; \ + else if (__y == 1.0) \ + __result = __x; \ + else if (__y == 2.0) \ + __result = __x * __x; \ + else if (__x == 10.0) \ + __asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y)); \ + else if (__x == 2.0) \ + __asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y)); \ + else if (__x < 0.0) \ + { \ + __float_type __temp = __m81_u (__rint##__s) (__y); \ + if (__y == __temp) \ + { \ + int __i = (int) __y; \ + __result = (__m81_u(__ieee754_exp##__s) \ + (__y * __m81_u(__ieee754_log##__s) (-__x))); \ + if (__i & 1) \ + __result = -__result; \ + } \ + else \ + __result = 0.0 / 0.0; \ + } \ + else \ + __result = (__m81_u(__ieee754_exp##__s) \ + (__y * __m81_u(__ieee754_log##__s) (__x))); \ + return __result; \ +} \ + \ +__m81_defun (__float_type, __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_inline __float_type \ +__m81_u(__modf##__s)(__float_type __value, __float_type *__iptr) \ +{ \ + __float_type __modf_int; \ + __asm ("fintrz%.x %1, %0" : "=f" (__modf_int) : "f" (__value)); \ + *__iptr = __modf_int; \ + return __value - __modf_int; \ +} \ + \ +__m81_defun (int, __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, __isnan##__s, (__float_type __value)) \ +{ \ + char __result; \ + __asm("ftst%.x %1\n" \ + "fsun %0" : "=dm" (__result) : "f" (__value)); \ + return __result; \ +} \ + \ +__m81_defun (int, __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, __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, \ + __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; \ +} \ + \ +__m81_defun (__float_type, __scalbn##__s, (__float_type __x, int __n)) \ +{ \ + __float_type __result; \ + __asm ("fscale%.l %1, %0" : "=f" (__result) : "dmi" (__n), "0" (__x)); \ + return __result; \ +} + +/* This defines the three variants of the inline functions. */ +__inline_functions (double, ) +__inline_functions (float, f) +__inline_functions (long double, l) +#undef __inline_functions #endif /* GCC. */ |