diff options
Diffstat (limited to 'libc/sysdeps/ieee754/ldbl-96/e_j0l.c')
| -rw-r--r-- | libc/sysdeps/ieee754/ldbl-96/e_j0l.c | 138 |
1 files changed, 12 insertions, 126 deletions
diff --git a/libc/sysdeps/ieee754/ldbl-96/e_j0l.c b/libc/sysdeps/ieee754/ldbl-96/e_j0l.c index 12c906bcb..ce1f0f756 100644 --- a/libc/sysdeps/ieee754/ldbl-96/e_j0l.c +++ b/libc/sysdeps/ieee754/ldbl-96/e_j0l.c @@ -11,9 +11,9 @@ /* Long double expansions are Copyright (C) 2001 Stephen L. Moshier <moshier@na-net.ornl.gov> - and are incorporated herein by permission of the author. The author + and are incorporated herein by permission of the author. The author reserves the right to distribute this material elsewhere under different - copying permissions. These modifications are distributed here under + copying permissions. These modifications are distributed here under the following terms: This library is free software; you can redistribute it and/or @@ -74,17 +74,9 @@ #include "math.h" #include "math_private.h" -#ifdef __STDC__ static long double pzero (long double), qzero (long double); -#else -static long double pzero (), qzero (); -#endif -#ifdef __STDC__ static const long double -#else -static long double -#endif huge = 1e4930L, one = 1.0L, invsqrtpi = 5.6418958354775628694807945156077258584405e-1L, @@ -109,20 +101,10 @@ static long double /* 1.000000000000000000000000000000000000000E0L,*/ }; -#ifdef __STDC__ static const long double zero = 0.0; -#else -static long double zero = 0.0; -#endif -#ifdef __STDC__ long double __ieee754_j0l (long double x) -#else -long double -__ieee754_j0l (x) - long double x; -#endif { long double z, s, c, ss, cc, r, u, v; int32_t ix; @@ -130,7 +112,7 @@ __ieee754_j0l (x) GET_LDOUBLE_WORDS (se, i0, i1, x); ix = se & 0x7fff; - if (ix >= 0x7fff) + if (__builtin_expect (ix >= 0x7fff, 0)) return one / (x * x); x = fabsl (x); if (ix >= 0x4000) /* |x| >= 2.0 */ @@ -150,7 +132,7 @@ __ieee754_j0l (x) * j0(x) = 1/sqrt(pi) * (P(0,x)*cc - Q(0,x)*ss) / sqrt(x) * y0(x) = 1/sqrt(pi) * (P(0,x)*ss + Q(0,x)*cc) / sqrt(x) */ - if (ix > 0x4080) /* 2^129 */ + if (__builtin_expect (ix > 0x4080, 0)) /* 2^129 */ z = (invsqrtpi * cc) / __ieee754_sqrtl (x); else { @@ -160,7 +142,7 @@ __ieee754_j0l (x) } return z; } - if (ix < 0x3fef) /* |x| < 2**-16 */ + if (__builtin_expect (ix < 0x3fef, 0)) /* |x| < 2**-16 */ { if (huge + x > one) { /* raise inexact if x != 0 */ @@ -183,16 +165,13 @@ __ieee754_j0l (x) return ((one + u) * (one - u) + z * (r / s)); } } +strong_alias (__ieee754_j0l, __j0l_finite) /* y0(x) = 2/pi ln(x) J0(x) + U(x^2)/V(x^2) 0 < x <= 2 peak relative error 1.7e-21 */ -#ifdef __STDC__ static const long double -#else -static long double -#endif U[6] = { -1.054912306975785573710813351985351350861E10L, 2.520192609749295139432773849576523636127E10L, @@ -201,11 +180,7 @@ U[6] = { -3.440684087134286610316661166492641011539E5L, 1.005524356159130626192144663414848383774E3L, }; -#ifdef __STDC__ static const long double -#else -static long double -#endif V[5] = { 1.429337283720789610137291929228082613676E11L, 2.492593075325119157558811370165695013002E9L, @@ -215,14 +190,8 @@ V[5] = { /* 1.000000000000000000000000000000000000000E0L */ }; -#ifdef __STDC__ long double __ieee754_y0l (long double x) -#else -long double -__ieee754_y0l (x) - long double x; -#endif { long double z, s, c, ss, cc, u, v; int32_t ix; @@ -231,11 +200,11 @@ __ieee754_y0l (x) GET_LDOUBLE_WORDS (se, i0, i1, x); ix = se & 0x7fff; /* Y0(NaN) is NaN, y0(-inf) is Nan, y0(inf) is 0 */ - if (se & 0x8000) + if (__builtin_expect (se & 0x8000, 0)) return zero / (zero * x); - if (ix >= 0x7fff) + if (__builtin_expect (ix >= 0x7fff, 0)) return one / (x + x * x); - if ((i0 | i1) == 0) + if (__builtin_expect ((i0 | i1) == 0, 0)) return -HUGE_VALL + x; /* -inf and overflow exception. */ if (ix >= 0x4000) { /* |x| >= 2.0 */ @@ -266,7 +235,7 @@ __ieee754_y0l (x) else ss = z / cc; } - if (ix > 0x4080) /* 1e39 */ + if (__builtin_expect (ix > 0x4080, 0)) /* 1e39 */ z = (invsqrtpi * ss) / __ieee754_sqrtl (x); else { @@ -276,7 +245,7 @@ __ieee754_y0l (x) } return z; } - if (ix <= 0x3fde) /* x < 2^-33 */ + if (__builtin_expect (ix <= 0x3fde, 0)) /* x < 2^-33 */ { z = -7.380429510868722527629822444004602747322E-2L + tpi * __ieee754_logl (x); @@ -287,17 +256,14 @@ __ieee754_y0l (x) v = V[0] + z * (V[1] + z * (V[2] + z * (V[3] + z * (V[4] + z)))); return (u / v + tpi * (__ieee754_j0l (x) * __ieee754_logl (x))); } +strong_alias (__ieee754_y0l, __y0l_finite) /* The asymptotic expansions of pzero is * 1 - 9/128 s^2 + 11025/98304 s^4 - ..., where s = 1/x. * For x >= 2, We approximate pzero by * pzero(x) = 1 + s^2 R(s^2) / S(s^2) */ -#ifdef __STDC__ static const long double pR8[7] = { -#else -static long double pR8[7] = { -#endif /* 8 <= x <= inf Peak relative error 4.62 */ -4.094398895124198016684337960227780260127E-9L, @@ -308,11 +274,7 @@ static long double pR8[7] = { -5.827178869301452892963280214772398135283E-2L, -2.087563267939546435460286895807046616992E-2L, }; -#ifdef __STDC__ static const long double pS8[6] = { -#else -static long double pS8[6] = { -#endif 5.823145095287749230197031108839653988393E-8L, 1.279281986035060320477759999428992730280E-5L, 9.132668954726626677174825517150228961304E-4L, @@ -322,11 +284,7 @@ static long double pS8[6] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static const long double pR5[7] = { -#else -static long double pR5[7] = { -#endif /* 4.54541015625 <= x <= 8 Peak relative error 6.51E-22 */ -2.041226787870240954326915847282179737987E-7L, @@ -337,11 +295,7 @@ static long double pR5[7] = { -8.641175552716402616180994954177818461588E-2L, -1.354654710097134007437166939230619726157E-2L, }; -#ifdef __STDC__ static const long double pS5[6] = { -#else -static long double pS5[6] = { -#endif 2.903078099681108697057258628212823545290E-6L, 3.253948449946735405975737677123673867321E-4L, 1.181269751723085006534147920481582279979E-2L, @@ -351,11 +305,7 @@ static long double pS5[6] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static const long double pR3[7] = { -#else -static long double pR3[7] = { -#endif /* 2.85711669921875 <= x <= 4.54541015625 peak relative error 5.25e-21 */ -5.755732156848468345557663552240816066802E-6L, @@ -366,11 +316,7 @@ static long double pR3[7] = { -1.193350853469302941921647487062620011042E-1L, -8.567802507331578894302991505331963782905E-3L, }; -#ifdef __STDC__ static const long double pS3[6] = { -#else -static long double pS3[6] = { -#endif 8.185931139070086158103309281525036712419E-5L, 5.398016943778891093520574483111255476787E-3L, 1.130589193590489566669164765853409621081E-1L, @@ -380,11 +326,7 @@ static long double pS3[6] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static const long double pR2[7] = { -#else -static long double pR2[7] = { -#endif /* 2 <= x <= 2.85711669921875 peak relative error 2.64e-21 */ -1.219525235804532014243621104365384992623E-4L, @@ -395,11 +337,7 @@ static long double pR2[7] = { -1.556241316844728872406672349347137975495E-1L, -5.355423239526452209595316733635519506958E-3L, }; -#ifdef __STDC__ static const long double pS2[6] = { -#else -static long double pS2[6] = { -#endif 1.734442793664291412489066256138894953823E-3L, 7.158111826468626405416300895617986926008E-2L, 9.153839713992138340197264669867993552641E-1L, @@ -409,20 +347,10 @@ static long double pS2[6] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static long double pzero (long double x) -#else -static long double -pzero (x) - long double x; -#endif { -#ifdef __STDC__ const long double *p, *q; -#else - long double *p, *q; -#endif long double z, r, s; int32_t ix; u_int32_t se, i0, i1; @@ -468,11 +396,7 @@ pzero (x) * We approximate qzero by * qzero(x) = s*(-.125 + R(s^2) / S(s^2)) */ -#ifdef __STDC__ static const long double qR8[7] = { -#else -static long double qR8[7] = { -#endif /* 8 <= x <= inf peak relative error 2.23e-21 */ 3.001267180483191397885272640777189348008E-10L, @@ -483,11 +407,7 @@ static long double qR8[7] = { 3.881970028476167836382607922840452192636E-2L, 6.132191514516237371140841765561219149638E-2L, }; -#ifdef __STDC__ static const long double qS8[7] = { -#else -static long double qS8[7] = { -#endif 4.097730123753051126914971174076227600212E-9L, 1.199615869122646109596153392152131139306E-6L, 1.196337580514532207793107149088168946451E-4L, @@ -498,11 +418,7 @@ static long double qS8[7] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static const long double qR5[7] = { -#else -static long double qR5[7] = { -#endif /* 4.54541015625 <= x <= 8 peak relative error 1.03e-21 */ 3.406256556438974327309660241748106352137E-8L, @@ -513,11 +429,7 @@ static long double qR5[7] = { 1.071578819056574524416060138514508609805E-1L, 7.458950172851611673015774675225656063757E-2L, }; -#ifdef __STDC__ static const long double qS5[7] = { -#else -static long double qS5[7] = { -#endif 4.650675622764245276538207123618745150785E-7L, 6.773573292521412265840260065635377164455E-5L, 3.340711249876192721980146877577806687714E-3L, @@ -528,11 +440,7 @@ static long double qS5[7] = { /* 1.000000000000000000000000000000000000000E0L,*/ }; -#ifdef __STDC__ static const long double qR3[7] = { -#else -static long double qR3[7] = { -#endif /* 2.85711669921875 <= x <= 4.54541015625 peak relative error 5.24e-21 */ 1.749459596550816915639829017724249805242E-6L, @@ -543,11 +451,7 @@ static long double qR3[7] = { 2.538595333972857367655146949093055405072E-1L, 8.560591367256769038905328596020118877936E-2L, }; -#ifdef __STDC__ static const long double qS3[7] = { -#else -static long double qS3[7] = { -#endif 2.388596091707517488372313710647510488042E-5L, 2.048679968058758616370095132104333998147E-3L, 5.824663198201417760864458765259945181513E-2L, @@ -558,11 +462,7 @@ static long double qS3[7] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static const long double qR2[7] = { -#else -static long double qR2[7] = { -#endif /* 2 <= x <= 2.85711669921875 peak relative error 1.58e-21 */ 6.306524405520048545426928892276696949540E-5L, @@ -573,11 +473,7 @@ static long double qR2[7] = { 5.431871999743531634887107835372232030655E-1L, 9.447736151202905471899259026430157211949E-2L, }; -#ifdef __STDC__ static const long double qS2[7] = { -#else -static long double qS2[7] = { -#endif 8.610579901936193494609755345106129102676E-4L, 4.649054352710496997203474853066665869047E-2L, 8.104282924459837407218042945106320388339E-1L, @@ -588,20 +484,10 @@ static long double qS2[7] = { /* 1.000000000000000000000000000000000000000E0L, */ }; -#ifdef __STDC__ static long double qzero (long double x) -#else -static long double -qzero (x) - long double x; -#endif { -#ifdef __STDC__ const long double *p, *q; -#else - long double *p, *q; -#endif long double s, r, z; int32_t ix; u_int32_t se, i0, i1; |