diff options
Diffstat (limited to 'sysdeps/libm-ieee754')
21 files changed, 261 insertions, 256 deletions
diff --git a/sysdeps/libm-ieee754/e_gamma_r.c b/sysdeps/libm-ieee754/e_gamma_r.c new file mode 100644 index 0000000000..eb80809843 --- /dev/null +++ b/sysdeps/libm-ieee754/e_gamma_r.c @@ -0,0 +1,47 @@ +/* Implementation of gamma function according to ISO C. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + 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. */ + +#include <math.h> +#include <math_private.h> + + +double +__ieee754_gamma_r (double x, int *signgamp) +{ + /* We don't have a real gamma implementation now. We'll use lgamma + and the exp function. But due to the required boundary + conditions we must check some values separately. */ + int32_t hx; + u_int32_t lx; + + EXTRACT_WORDS (hx, lx, x); + + if ((hx & 0x7fffffff | lx) == 0) + /* Return value for x == 0 is NaN with invalid exception. */ + return x / x; + if (hx < 0 && (u_int32_t) hx < 0xfff00000 && __rint (x) == x) + { + /* Return value for integer x < 0 is NaN with invalid exception. */ + return (x - x) / (x - x); + } + + /* XXX FIXME. */ + return __ieee754_exp (__ieee754_lgamma_r (x, signgamp)); +} diff --git a/sysdeps/libm-ieee754/e_gammaf_r.c b/sysdeps/libm-ieee754/e_gammaf_r.c new file mode 100644 index 0000000000..bf79ffeb57 --- /dev/null +++ b/sysdeps/libm-ieee754/e_gammaf_r.c @@ -0,0 +1,46 @@ +/* Implementation of gamma function according to ISO C. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + 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. */ + +#include <math.h> +#include <math_private.h> + + +float +__ieee754_gammaf_r (float x, int *signgamp) +{ + /* We don't have a real gamma implementation now. We'll use lgamma + and the exp function. But due to the required boundary + conditions we must check some values separately. */ + int32_t hx; + + GET_FLOAT_WORD (hx, x); + + if ((hx & 0x7fffffff) == 0) + /* Return value for x == 0 is NaN with invalid exception. */ + return x / x; + if (hx < 0 && (u_int32_t) hx < 0xff800000 && __rintf (x) == x) + { + /* Return value for integer x < 0 is NaN with invalid exception. */ + return (x - x) / (x - x); + } + + /* XXX FIXME. */ + return __ieee754_expf (__ieee754_lgammaf_r (x, signgamp)); +} diff --git a/sysdeps/libm-ieee754/e_gammal_r.c b/sysdeps/libm-ieee754/e_gammal_r.c new file mode 100644 index 0000000000..4fd49886d1 --- /dev/null +++ b/sysdeps/libm-ieee754/e_gammal_r.c @@ -0,0 +1,46 @@ +/* Implementation of gamma function according to ISO C. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + 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. */ + +#include <math.h> +#include <math_private.h> + + +long double +__ieee754_gammal_r (long double x, int *signgamp) +{ + /* We don't have a real gamma implementation now. We'll use lgamma + and the exp function. But due to the required boundary + conditions we must check some values separately. */ + u_int32_t es, hx, lx; + + GET_LDOUBLE_WORDS (es, hx, lx, x); + + if (((es & 0x7fff) | hx | lx) == 0) + /* Return value for x == 0 is NaN with invalid exception. */ + return x / x; + if ((hx & 0x8000) != 0 && (hx & 0x7fff) != 0x7fff && __rintl (x) == x) + { + /* Return value for integer x < 0 is NaN with invalid exception. */ + return (x - x) / (x - x); + } + + /* XXX FIXME. */ + return __ieee754_expl (__ieee754_lgammal_r (x, signgamp)); +} diff --git a/sysdeps/libm-ieee754/e_lgamma_r.c b/sysdeps/libm-ieee754/e_lgamma_r.c index 1be4ddad8f..92e9556568 100644 --- a/sysdeps/libm-ieee754/e_lgamma_r.c +++ b/sysdeps/libm-ieee754/e_lgamma_r.c @@ -5,7 +5,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -15,12 +15,12 @@ static char rcsid[] = "$NetBSD: e_lgamma_r.c,v 1.7 1995/05/10 20:45:42 jtc Exp $ #endif /* __ieee754_lgamma_r(x, signgamp) - * Reentrant version of the logarithm of the Gamma function - * with user provide pointer for the sign of Gamma(x). + * Reentrant version of the logarithm of the Gamma function + * with user provide pointer for the sign of Gamma(x). * * Method: * 1. Argument Reduction for 0 < x <= 8 - * Since gamma(1+s)=s*gamma(s), for x in [0,8], we may + * Since gamma(1+s)=s*gamma(s), for x in [0,8], we may * reduce x to a number in [1.5,2.5] by * lgamma(1+s) = log(s) + lgamma(s) * for example, @@ -58,36 +58,36 @@ static char rcsid[] = "$NetBSD: e_lgamma_r.c,v 1.7 1995/05/10 20:45:42 jtc Exp $ * by * 3 5 11 * w = w0 + w1*z + w2*z + w3*z + ... + w6*z - * where + * where * |w - f(z)| < 2**-58.74 - * + * * 4. For negative x, since (G is gamma function) * -x*G(-x)*G(x) = pi/sin(pi*x), * we have * G(x) = pi/(sin(pi*x)*(-x)*G(-x)) * since G(-x) is positive, sign(G(x)) = sign(sin(pi*x)) for x<0 - * Hence, for x<0, signgam = sign(sin(pi*x)) and + * Hence, for x<0, signgam = sign(sin(pi*x)) and * lgamma(x) = log(|Gamma(x)|) * = log(pi/(|x*sin(pi*x)|)) - lgamma(-x); - * Note: one should avoid compute pi*(-x) directly in the + * Note: one should avoid compute pi*(-x) directly in the * computation of sin(pi*(-x)). - * + * * 5. Special Cases * lgamma(2+s) ~ s*(1-Euler) for tiny s * lgamma(1)=lgamma(2)=0 * lgamma(x) ~ -log(x) for tiny x * lgamma(0) = lgamma(inf) = inf * lgamma(-integer) = +-inf - * + * */ #include "math.h" #include "math_private.h" #ifdef __STDC__ -static const double +static const double #else -static double +static double #endif two52= 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ half= 5.00000000000000000000e-01, /* 0x3FE00000, 0x00000000 */ @@ -200,9 +200,9 @@ static double zero= 0.00000000000000000000e+00; } switch (n) { case 0: y = __kernel_sin(pi*y,zero,0); break; - case 1: + case 1: case 2: y = __kernel_cos(pi*(0.5-y),zero); break; - case 3: + case 3: case 4: y = __kernel_sin(pi*(one-y),zero,0); break; case 5: case 6: y = -__kernel_cos(pi*(y-1.5),zero); break; @@ -226,9 +226,11 @@ static double zero= 0.00000000000000000000e+00; /* purge off +-inf, NaN, +-0, and negative arguments */ *signgamp = 1; + if ((unsigned int) hx==0xfff00000&&lx==0) + return x-x; ix = hx&0x7fffffff; if(ix>=0x7ff00000) return x*x; - if((ix|lx)==0) return one/zero; + if((ix|lx)==0) return one/fabs(x); if(ix<0x3b900000) { /* |x|<2**-70, return -log(|x|) */ if(hx<0) { *signgamp = -1; @@ -237,9 +239,9 @@ static double zero= 0.00000000000000000000e+00; } if(hx<0) { if(ix>=0x43300000) /* |x|>=2**52, must be -integer */ - return one/zero; + return x/zero; t = sin_pi(x); - if(t==zero) return one/zero; /* -integer */ + if(t==zero) return one/fabsf(t); /* -integer */ nadj = __ieee754_log(pi/fabs(t*x)); if(t<zero) *signgamp = -1; x = -x; @@ -275,7 +277,7 @@ static double zero= 0.00000000000000000000e+00; p3 = t2+w*(t5+w*(t8+w*(t11+w*t14))); p = z*p1-(tt-w*(p2+y*p3)); r += (tf + p); break; - case 2: + case 2: p1 = y*(u0+y*(u1+y*(u2+y*(u3+y*(u4+y*u5))))); p2 = one+y*(v1+y*(v2+y*(v3+y*(v4+y*v5)))); r += (-0.5*y + p1/p2); @@ -304,7 +306,7 @@ static double zero= 0.00000000000000000000e+00; y = z*z; w = w0+z*(w1+y*(w2+y*(w3+y*(w4+y*(w5+y*w6))))); r = (x-half)*(t-one)+w; - } else + } else /* 2**58 <= x <= inf */ r = x*(__ieee754_log(x)-one); if(hx<0) r = nadj - r; diff --git a/sysdeps/libm-ieee754/e_lgammaf_r.c b/sysdeps/libm-ieee754/e_lgammaf_r.c index 1d0122dbb2..f744d5320e 100644 --- a/sysdeps/libm-ieee754/e_lgammaf_r.c +++ b/sysdeps/libm-ieee754/e_lgammaf_r.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -21,9 +21,9 @@ static char rcsid[] = "$NetBSD: e_lgammaf_r.c,v 1.3 1995/05/10 20:45:47 jtc Exp #include "math_private.h" #ifdef __STDC__ -static const float +static const float #else -static float +static float #endif two23= 8.3886080000e+06, /* 0x4b000000 */ half= 5.0000000000e-01, /* 0x3f000000 */ @@ -136,9 +136,9 @@ static float zero= 0.0000000000e+00; } switch (n) { case 0: y = __kernel_sinf(pi*y,zero,0); break; - case 1: + case 1: case 2: y = __kernel_cosf(pi*((float)0.5-y),zero); break; - case 3: + case 3: case 4: y = __kernel_sinf(pi*(one-y),zero,0); break; case 5: case 6: y = -__kernel_cosf(pi*(y-(float)1.5),zero); break; @@ -162,9 +162,11 @@ static float zero= 0.0000000000e+00; /* purge off +-inf, NaN, +-0, and negative arguments */ *signgamp = 1; + if ((unsigned int)hx==0xff800000) + return x-x; ix = hx&0x7fffffff; if(ix>=0x7f800000) return x*x; - if(ix==0) return one/zero; + if(ix==0) return one/fabsf(x); if(ix<0x1c800000) { /* |x|<2**-70, return -log(|x|) */ if(hx<0) { *signgamp = -1; @@ -173,9 +175,9 @@ static float zero= 0.0000000000e+00; } if(hx<0) { if(ix>=0x4b000000) /* |x|>=2**23, must be -integer */ - return one/zero; + return x/zero; t = sin_pif(x); - if(t==zero) return one/zero; /* -integer */ + if(t==zero) return one/fabsf(t); /* -integer */ nadj = __ieee754_logf(pi/fabsf(t*x)); if(t<zero) *signgamp = -1; x = -x; @@ -211,7 +213,7 @@ static float zero= 0.0000000000e+00; p3 = t2+w*(t5+w*(t8+w*(t11+w*t14))); p = z*p1-(tt-w*(p2+y*p3)); r += (tf + p); break; - case 2: + case 2: p1 = y*(u0+y*(u1+y*(u2+y*(u3+y*(u4+y*u5))))); p2 = one+y*(v1+y*(v2+y*(v3+y*(v4+y*v5)))); r += (-(float)0.5*y + p1/p2); @@ -240,7 +242,7 @@ static float zero= 0.0000000000e+00; y = z*z; w = w0+z*(w1+y*(w2+y*(w3+y*(w4+y*(w5+y*w6))))); r = (x-half)*(t-one)+w; - } else + } else /* 2**58 <= x <= inf */ r = x*(__ieee754_logf(x)-one); if(hx<0) r = nadj - r; diff --git a/sysdeps/libm-ieee754/s_rinttoll.c b/sysdeps/libm-ieee754/s_llrint.c index b2fccd17b7..faae106ece 100644 --- a/sysdeps/libm-ieee754/s_rinttoll.c +++ b/sysdeps/libm-ieee754/s_llrint.c @@ -33,7 +33,7 @@ static long double two52[2] = long long int -__rinttoll (long double x) +__llrint (long double x) { int32_t j0,sx; u_int32_t i0, i1, i; @@ -141,7 +141,7 @@ static long double two63[2] = long long int -__rinttoll (long double x) +__llrint (long double x) { int32_t se,j0,sx; u_int32_t i0, i1, i; @@ -239,4 +239,4 @@ __rinttoll (long double x) } #endif -weak_alias (__rinttoll, rinttoll) +weak_alias (__llrint, llrint) diff --git a/sysdeps/libm-ieee754/s_roundtoll.c b/sysdeps/libm-ieee754/s_llround.c index 49167236a6..aee0e31fc0 100644 --- a/sysdeps/libm-ieee754/s_roundtoll.c +++ b/sysdeps/libm-ieee754/s_llround.c @@ -27,7 +27,7 @@ /* The `long double' is in fact the IEEE `double' type. */ long long int -__roundtoll (long double x) +__llround (long double x) { int32_t j0; u_int32_t i1, i0; @@ -103,7 +103,7 @@ __roundtoll (long double x) } #else long long int -__roundtoll (long double x) +__llround (long double x) { int32_t j0; u_int32_t se, i1, i0; @@ -176,4 +176,4 @@ __roundtoll (long double x) return se & 0x8000 ? -result : result; } #endif -weak_alias (__roundtoll, roundtoll) +weak_alias (__llround, llround) diff --git a/sysdeps/libm-ieee754/s_rinttol.c b/sysdeps/libm-ieee754/s_lrint.c index 257bdc744c..6779f974bd 100644 --- a/sysdeps/libm-ieee754/s_rinttol.c +++ b/sysdeps/libm-ieee754/s_lrint.c @@ -33,7 +33,7 @@ static long double two52[2] = long int -__rinttol (long double x) +__lrint (long double x) { int32_t j0,sx; u_int32_t i0,i1,i; @@ -141,7 +141,7 @@ static long double two63[2] = long int -__rinttol (long double x) +__lrint (long double x) { int32_t se,j0,sx; u_int32_t i0,i1,i; @@ -239,4 +239,4 @@ __rinttol (long double x) } #endif -weak_alias (__rinttol, rinttol) +weak_alias (__lrint, lrint) diff --git a/sysdeps/libm-ieee754/s_roundtol.c b/sysdeps/libm-ieee754/s_lround.c index bc0ceae0f8..0f91280a79 100644 --- a/sysdeps/libm-ieee754/s_roundtol.c +++ b/sysdeps/libm-ieee754/s_lround.c @@ -27,7 +27,7 @@ /* The `long double' is in fact the IEEE `double' type. */ long int -__roundtol (long double x) +__lround (long double x) { int32_t j0; u_int32_t i1, i0; @@ -101,7 +101,7 @@ __roundtol (long double x) } #else long int -__roundtol (long double x) +__lround (long double x) { int32_t j0; u_int32_t se, i1, i0; @@ -174,4 +174,4 @@ __roundtol (long double x) return se & 0x8000 ? -result : result; } #endif -weak_alias (__roundtol, roundtol) +weak_alias (__lround, lround) diff --git a/sysdeps/libm-ieee754/s_remquo.c b/sysdeps/libm-ieee754/s_remquo.c index f0a32130a2..39f6ceab2e 100644 --- a/sysdeps/libm-ieee754/s_remquo.c +++ b/sysdeps/libm-ieee754/s_remquo.c @@ -82,6 +82,7 @@ __remquo (double x, double y, int *quo) if (x + x > y) { x -= y; + ++cquo; if (x + x >= y) { x -= y; @@ -95,6 +96,7 @@ __remquo (double x, double y, int *quo) if (x > y_half) { x -= y; + ++cquo; if (x >= y_half) { x -= y; diff --git a/sysdeps/libm-ieee754/s_remquof.c b/sysdeps/libm-ieee754/s_remquof.c index 6fa02e47b3..b3870f4b02 100644 --- a/sysdeps/libm-ieee754/s_remquof.c +++ b/sysdeps/libm-ieee754/s_remquof.c @@ -81,6 +81,7 @@ __remquof (float x, float y, int *quo) if (x + x > y) { x -= y; + ++cquo; if (x + x >= y) { x -= y; @@ -94,6 +95,7 @@ __remquof (float x, float y, int *quo) if (x > y_half) { x -= y; + ++cquo; if (x >= y_half) { x -= y; diff --git a/sysdeps/libm-ieee754/s_remquol.c b/sysdeps/libm-ieee754/s_remquol.c index 9ef424901b..b7835e6dc7 100644 --- a/sysdeps/libm-ieee754/s_remquol.c +++ b/sysdeps/libm-ieee754/s_remquol.c @@ -82,6 +82,7 @@ __remquol (long double x, long double p, int *quo) if (x + x > p) { x -= p; + ++cquo; if (x + x >= p) { x -= p; @@ -95,6 +96,7 @@ __remquol (long double x, long double p, int *quo) if (x > p_half) { x -= p; + ++cquo; if (x >= p_half) { x -= p; diff --git a/sysdeps/libm-ieee754/s_scalbn.c b/sysdeps/libm-ieee754/s_scalbn.c index 439b966e69..0ce0ffdf2f 100644 --- a/sysdeps/libm-ieee754/s_scalbn.c +++ b/sysdeps/libm-ieee754/s_scalbn.c @@ -35,10 +35,10 @@ huge = 1.0e+300, tiny = 1.0e-300; #ifdef __STDC__ - double __scalbn (double x, int n) + double __scalbn (double x, long int n) #else double __scalbn (x,n) - double x; int n; + double x; long int n; #endif { int32_t k,hx,lx; @@ -49,17 +49,16 @@ tiny = 1.0e-300; x *= two54; GET_HIGH_WORD(hx,x); k = ((hx&0x7ff00000)>>20) - 54; - if (n< -50000) return tiny*x; /*underflow*/ } if (k==0x7ff) return x+x; /* NaN or Inf */ k = k+n; - if (k > 0x7fe) return huge*__copysign(huge,x); /* overflow */ + if (n> 50000 || k > 0x7fe) + return huge*__copysign(huge,x); /* overflow */ + if (n< -50000) return tiny*__copysign(tiny,x); /*underflow*/ if (k > 0) /* normal result */ {SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x;} if (k <= -54) - if (n > 50000) /* in case integer overflow in n+k */ - return huge*__copysign(huge,x); /*overflow*/ - else return tiny*__copysign(tiny,x); /*underflow*/ + return tiny*__copysign(tiny,x); /*underflow*/ k += 54; /* subnormal result */ SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x*twom54; diff --git a/sysdeps/libm-ieee754/s_scalbnf.c b/sysdeps/libm-ieee754/s_scalbnf.c index 3a83e54c56..4799c825c9 100644 --- a/sysdeps/libm-ieee754/s_scalbnf.c +++ b/sysdeps/libm-ieee754/s_scalbnf.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -31,10 +31,10 @@ huge = 1.0e+30, tiny = 1.0e-30; #ifdef __STDC__ - float __scalbnf (float x, int n) + float __scalbnf (float x, long int n) #else float __scalbnf (x,n) - float x; int n; + float x; long int n; #endif { int32_t k,ix; @@ -44,18 +44,18 @@ tiny = 1.0e-30; if ((ix&0x7fffffff)==0) return x; /* +-0 */ x *= two25; GET_FLOAT_WORD(ix,x); - k = ((ix&0x7f800000)>>23) - 25; - if (n< -50000) return tiny*x; /*underflow*/ + k = ((ix&0x7f800000)>>23) - 25; } if (k==0xff) return x+x; /* NaN or Inf */ - k = k+n; - if (k > 0xfe) return huge*copysignf(huge,x); /* overflow */ + k = k+n; + if (n> 50000 || k > 0xfe) + return huge*copysignf(huge,x); /* overflow */ + if (n< -50000) + return tiny*copysignf(tiny,x); /*underflow*/ if (k > 0) /* normal result */ {SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x;} if (k <= -25) - if (n > 50000) /* in case integer overflow in n+k */ - return huge*copysignf(huge,x); /*overflow*/ - else return tiny*copysignf(tiny,x); /*underflow*/ + return tiny*copysignf(tiny,x); /*underflow*/ k += 25; /* subnormal result */ SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x*twom25; diff --git a/sysdeps/libm-ieee754/s_scalbnl.c b/sysdeps/libm-ieee754/s_scalbnl.c index 6825e9c7b3..3e80d85136 100644 --- a/sysdeps/libm-ieee754/s_scalbnl.c +++ b/sysdeps/libm-ieee754/s_scalbnl.c @@ -33,16 +33,16 @@ static const long double #else static long double #endif -two54 = 1.80143985094819840000e+16, /* 0x4035, 0x00000000, 0x00000000 */ -twom54 = 5.55111512312578270212e-17, /* 0x3FC9, 0x00000000, 0x00000000 */ +two63 = 4.50359962737049600000e+15, +twom63 = 1.08420217248550443400e-19; huge = 1.0e+4900L, tiny = 1.0e-4900L; #ifdef __STDC__ - long double __scalbnl (long double x, int n) + long double __scalbnl (long double x, long int n) #else long double __scalbnl (x,n) - long double x; int n; + long double x; long int n; #endif { int32_t k,es,hx,lx; @@ -50,22 +50,22 @@ tiny = 1.0e-4900L; k = es&0x7fff; /* extract exponent */ if (k==0) { /* 0 or subnormal x */ if ((lx|(hx&0x7fffffff))==0) return x; /* +-0 */ - x *= two54; - GET_HIGH_WORD(hx,x); - k = ((hx&0x7ff00000)>>20) - 54; - if (n< -50000) return tiny*x; /*underflow*/ + x *= two63; + GET_LDOUBLE_EXP(es,x); + k = (hx&0x7fff) - 63; } - if (k==0x7ff) return x+x; /* NaN or Inf */ + if (k==0x7fff) return x+x; /* NaN or Inf */ k = k+n; - if (k > 0x7fe) return huge*__copysign(huge,x); /* overflow */ + if (n> 50000 || k > 0x7ffe) + return huge*__copysignl(huge,x); /* overflow */ + if (n< -50000) + return tiny*__copysignl(tiny,x); if (k > 0) /* normal result */ - {SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); return x;} - if (k <= -54) - if (n > 50000) /* in case integer overflow in n+k */ - return huge*__copysign(huge,x); /*overflow*/ - else return tiny*__copysign(tiny,x); /*underflow*/ + {SET_LDOUBLE_EXP(x,(es&0x8000)|k); return x;} + if (k <= -63) + return tiny*__copysignl(tiny,x); /*underflow*/ k += 54; /* subnormal result */ - SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20)); - return x*twom54; + SET_LDOUBLE_EXP(x,(es&0x8000)|k); + return x*twom63; } weak_alias (__scalbnl, scalbnl) diff --git a/sysdeps/libm-ieee754/w_gamma.c b/sysdeps/libm-ieee754/w_gamma.c index 49e4bcf3c3..87a3408c3f 100644 --- a/sysdeps/libm-ieee754/w_gamma.c +++ b/sysdeps/libm-ieee754/w_gamma.c @@ -15,16 +15,13 @@ static char rcsid[] = "$NetBSD: w_gamma.c,v 1.7 1995/11/20 22:06:43 jtc Exp $"; #endif /* double gamma(double x) - * Return the logarithm of the Gamma function of x. - * - * Method: call gamma_r + * Return the logarithm of the Gamma function of x or the Gamma function of x, + * depending on the library mode. */ #include "math.h" #include "math_private.h" -extern int signgam; - #ifdef __STDC__ double __gamma(double x) #else @@ -32,12 +29,19 @@ extern int signgam; double x; #endif { + int signgam; + double y; + if (_LIB_VERSION == _SVID_) + y = __ieee754_lgamma_r(x,&signgam); + else + { + y = __ieee754_gamma_r(x,&signgam); + if (signgam < 0) y = -y; #ifdef _IEEE_LIBM - return __ieee754_lgamma_r(x,&signgam); + return y; #else - double y; - y = __ieee754_lgamma_r(x,&signgam); - if(_LIB_VERSION == _IEEE_) return y; + if(_LIB_VERSION == _IEEE_) return y; + } if(!__finite(y)&&__finite(x)) { if(__floor(x)==x&&x<=0.0) return __kernel_standard(x,x,41); /* gamma pole */ diff --git a/sysdeps/libm-ieee754/w_gamma_r.c b/sysdeps/libm-ieee754/w_gamma_r.c deleted file mode 100644 index f9efc8cf2e..0000000000 --- a/sysdeps/libm-ieee754/w_gamma_r.c +++ /dev/null @@ -1,51 +0,0 @@ -/* @(#)wr_gamma.c 5.1 93/09/24 */ -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: w_gamma_r.c,v 1.7 1995/11/20 22:06:45 jtc Exp $"; -#endif - -/* - * wrapper double gamma_r(double x, int *signgamp) - */ - -#include "math.h" -#include "math_private.h" - - -#ifdef __STDC__ - double __gamma_r(double x, int *signgamp) /* wrapper lgamma_r */ -#else - double __gamma_r(x,signgamp) /* wrapper lgamma_r */ - double x; int *signgamp; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_lgamma_r(x,signgamp); -#else - double y; - y = __ieee754_lgamma_r(x,signgamp); - if(_LIB_VERSION == _IEEE_) return y; - if(!__finite(y)&&__finite(x)) { - if(__floor(x)==x&&x<=0.0) - return __kernel_standard(x,x,41); /* gamma pole */ - else - return __kernel_standard(x,x,40); /* gamma overflow */ - } else - return y; -#endif -} -weak_alias (__gamma_r, gamma_r) -#ifdef NO_LONG_DOUBLE -strong_alias (__gamma_r, __gammal_r) -weak_alias (__gamma_r, gammal_r) -#endif diff --git a/sysdeps/libm-ieee754/w_gammaf.c b/sysdeps/libm-ieee754/w_gammaf.c index c2d21daf47..ecde183824 100644 --- a/sysdeps/libm-ieee754/w_gammaf.c +++ b/sysdeps/libm-ieee754/w_gammaf.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -20,8 +20,6 @@ static char rcsid[] = "$NetBSD: w_gammaf.c,v 1.4 1995/11/20 22:06:48 jtc Exp $"; #include "math.h" #include "math_private.h" -extern int signgam; - #ifdef __STDC__ float __gammaf(float x) #else @@ -29,12 +27,19 @@ extern int signgam; float x; #endif { + int signgam; + float y; + if (_LIB_VERSION == _SVID_) + y = __ieee754_lgammaf_r(x,&signgam); + else + { + y = __ieee754_gammaf_r(x,&signgam); + if (signgam < 0) y = -y; #ifdef _IEEE_LIBM - return __ieee754_lgammaf_r(x,&signgam); + return y; #else - float y; - y = __ieee754_lgammaf_r(x,&signgam); - if(_LIB_VERSION == _IEEE_) return y; + if(_LIB_VERSION == _IEEE_) return y; + } if(!__finitef(y)&&__finitef(x)) { if(__floorf(x)==x&&x<=(float)0.0) /* gammaf pole */ @@ -45,5 +50,5 @@ extern int signgam; } else return y; #endif -} +} weak_alias (__gammaf, gammaf) diff --git a/sysdeps/libm-ieee754/w_gammaf_r.c b/sysdeps/libm-ieee754/w_gammaf_r.c deleted file mode 100644 index b15d5e84bb..0000000000 --- a/sysdeps/libm-ieee754/w_gammaf_r.c +++ /dev/null @@ -1,52 +0,0 @@ -/* w_gammaf_r.c -- float version of w_gamma_r.c. - * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. - */ - -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: w_gammaf_r.c,v 1.4 1995/11/20 22:06:50 jtc Exp $"; -#endif - -/* - * wrapper float gammaf_r(float x, int *signgamp) - */ - -#include "math.h" -#include "math_private.h" - - -#ifdef __STDC__ - float __gammaf_r(float x, int *signgamp) /* wrapper lgammaf_r */ -#else - float __gammaf_r(x,signgamp) /* wrapper lgammaf_r */ - float x; int *signgamp; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_lgammaf_r(x,signgamp); -#else - float y; - y = __ieee754_lgammaf_r(x,signgamp); - if(_LIB_VERSION == _IEEE_) return y; - if(!__finitef(y)&&__finitef(x)) { - if(__floorf(x)==x&&x<=(float)0.0) - /* gammaf pole */ - return (float)__kernel_standard((double)x,(double)x,141); - else - /* gamma overflow */ - return (float)__kernel_standard((double)x,(double)x,140); - } else - return y; -#endif -} -weak_alias (__gammaf_r, gammaf_r) diff --git a/sysdeps/libm-ieee754/w_gammal.c b/sysdeps/libm-ieee754/w_gammal.c index f72e2e7e44..605a4167c4 100644 --- a/sysdeps/libm-ieee754/w_gammal.c +++ b/sysdeps/libm-ieee754/w_gammal.c @@ -19,16 +19,12 @@ static char rcsid[] = "$NetBSD: $"; #endif /* long double gammal(double x) - * Return the logarithm of the Gamma function of x. - * - * Method: call gammal_r + * Return the Gamma function of x. */ #include "math.h" #include "math_private.h" -extern int signgam; - #ifdef __STDC__ long double __gammal(long double x) #else @@ -36,12 +32,19 @@ extern int signgam; long double x; #endif { + long double y; + int signgam; + if (_LIB_VERSION == _SVID_) + y = __ieee754_lgammal_r(x,&signgam); + else + { + y = __ieee754_gammal_r(x,&signgam); + if (signgam < 0) y = -y; #ifdef _IEEE_LIBM - return __ieee754_lgammal_r(x,&signgam); + return y; #else - long double y; - y = __ieee754_lgammal_r(x,&signgam); - if(_LIB_VERSION == _IEEE_) return y; + if(_LIB_VERSION == _IEEE_) return y; + } if(!__finitel(y)&&__finitel(x)) { if(__floorl(x)==x&&x<=0.0) return __kernel_standard(x,x,241); /* gamma pole */ diff --git a/sysdeps/libm-ieee754/w_gammal_r.c b/sysdeps/libm-ieee754/w_gammal_r.c deleted file mode 100644 index ad6a43ae9b..0000000000 --- a/sysdeps/libm-ieee754/w_gammal_r.c +++ /dev/null @@ -1,52 +0,0 @@ -/* w_gammal_r.c -- long double version of w_gamma_r.c. - * Conversion to long double by Ulrich Drepper, - * Cygnus Support, drepper@cygnus.com. - */ - -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: $"; -#endif - -/* - * wrapper long double gammal_r(long double x, int *signgamp) - */ - -#include "math.h" -#include "math_private.h" - - -#ifdef __STDC__ - long double __gammal_r(long double x, int *signgamp) - /* wrapper lgammal_r */ -#else - long double __gammal_r(x,signgamp) /* wrapper lgamma_r */ - long double x; int *signgamp; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_lgammal_r(x,signgamp); -#else - long double y; - y = __ieee754_lgammal_r(x,signgamp); - if(_LIB_VERSION == _IEEE_) return y; - if(!__finitel(y)&&__finitel(x)) { - if(__floorl(x)==x&&x<=0.0) - return __kernel_standard(x,x,241); /* gamma pole */ - else - return __kernel_standard(x,x,240); /* gamma overflow */ - } else - return y; -#endif -} -weak_alias (__gammal_r, gammal_r) |