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📄 catrig.c(18.56 KB)
📄 catrigf.c(9.27 KB)
📄 catrigl.c(10.37 KB)
📄 e_acos.c(3.38 KB)
📄 e_acosf.c(1.99 KB)
📄 e_acosh.c(1.63 KB)
📄 e_acoshf.c(1.27 KB)
📄 e_acoshl.c(2.19 KB)
📄 e_acosl.c(2.16 KB)
📄 e_asin.c(3.55 KB)
📄 e_asinf.c(1.58 KB)
📄 e_asinl.c(1.85 KB)
📄 e_atan2.c(3.74 KB)
📄 e_atan2f.c(2.63 KB)
📄 e_atan2l.c(3.42 KB)
📄 e_atanh.c(1.64 KB)
📄 e_atanhf.c(1.12 KB)
📄 e_atanhl.c(1.76 KB)
📄 e_cosh.c(2.21 KB)
📄 e_coshf.c(1.45 KB)
📄 e_coshl.c(4 KB)
📄 e_exp.c(5.07 KB)
📄 e_expf.c(2.7 KB)
📄 e_fmod.c(3.34 KB)
📄 e_fmodf.c(2.59 KB)
📄 e_fmodl.c(3.77 KB)
📄 e_gamma.c(725 B)
📄 e_gamma_r.c(801 B)
📄 e_gammaf.c(814 B)
📄 e_gammaf_r.c(890 B)
📄 e_hypot.c(3.22 KB)
📄 e_hypotf.c(2.15 KB)
📄 e_hypotl.c(3.16 KB)
📄 e_j0.c(14.39 KB)
📄 e_j0f.c(10.31 KB)
📄 e_j1.c(14.12 KB)
📄 e_j1f.c(9.98 KB)
📄 e_jn.c(7.08 KB)
📄 e_jnf.c(4.75 KB)
📄 e_lgamma.c(819 B)
📄 e_lgamma_r.c(10.7 KB)
📄 e_lgammaf.c(820 B)
📄 e_lgammaf_r.c(5.82 KB)
📄 e_lgammal.c(599 B)
📄 e_log.c(4.42 KB)
📄 e_log10.c(2.5 KB)
📄 e_log10f.c(1.93 KB)
📄 e_log2.c(3.64 KB)
📄 e_log2f.c(2.37 KB)
📄 e_logf.c(2.36 KB)
📄 e_pow.c(9.84 KB)
📄 e_powf.c(7.34 KB)
📄 e_rem_pio2.c(4.7 KB)
📄 e_rem_pio2f.c(1.96 KB)
📄 e_remainder.c(1.75 KB)
📄 e_remainderf.c(1.41 KB)
📄 e_remainderl.c(1.55 KB)
📄 e_scalb.c(1.07 KB)
📄 e_scalbf.c(1.06 KB)
📄 e_sinh.c(2.03 KB)
📄 e_sinhf.c(1.43 KB)
📄 e_sinhl.c(4.12 KB)
📄 e_sqrt.c(14.12 KB)
📄 e_sqrtf.c(1.91 KB)
📄 e_sqrtl.c(4.28 KB)
📄 fenv-softfloat.h(4.96 KB)
📄 imprecise.c(2.08 KB)
📄 k_cos.c(2.75 KB)
📄 k_cosf.c(1.23 KB)
📄 k_exp.c(3.55 KB)
📄 k_expf.c(2.67 KB)
📄 k_log.h(3.34 KB)
📄 k_logf.h(992 B)
📄 k_rem_pio2.c(15.51 KB)
📄 k_sin.c(2.27 KB)
📄 k_sincos.h(1.7 KB)
📄 k_sincosf.h(1.38 KB)
📄 k_sincosl.h(4.82 KB)
📄 k_sinf.c(1.21 KB)
📄 k_tan.c(3.93 KB)
📄 k_tanf.c(1.97 KB)
📄 math.h(13.92 KB)
📄 math_private.h(24.72 KB)
📄 s_asinh.c(1.64 KB)
📄 s_asinhf.c(1.32 KB)
📄 s_asinhl.c(2.41 KB)
📄 s_atan.c(4.08 KB)
📄 s_atanf.c(2.42 KB)
📄 s_atanl.c(2.32 KB)
📄 s_carg.c(1.55 KB)
📄 s_cargf.c(1.55 KB)
📄 s_cargl.c(1.57 KB)
📄 s_cbrt.c(4.03 KB)
📄 s_cbrtf.c(1.85 KB)
📄 s_cbrtl.c(3.34 KB)
📄 s_ccosh.c(5.01 KB)
📄 s_ccoshf.c(3.08 KB)
📄 s_ceil.c(1.73 KB)
📄 s_ceilf.c(1.24 KB)
📄 s_ceill.c(2.38 KB)
📄 s_cexp.c(2.88 KB)
📄 s_cexpf.c(2.85 KB)
📄 s_cimag.c(1.53 KB)
📄 s_cimagf.c(1.53 KB)
📄 s_cimagl.c(1.55 KB)
📄 s_clog.c(5.06 KB)
📄 s_clogf.c(5.01 KB)
📄 s_clogl.c(5.49 KB)
📄 s_conj.c(1.51 KB)
📄 s_conjf.c(1.52 KB)
📄 s_conjl.c(1.53 KB)
📄 s_copysign.c(808 B)
📄 s_copysignf.c(905 B)
📄 s_copysignl.c(1.57 KB)
📄 s_cos.c(2.19 KB)
📄 s_cosf.c(2.2 KB)
📄 s_cosl.c(2.55 KB)
📄 s_cpow.c(1.8 KB)
📄 s_cpowf.c(1.79 KB)
📄 s_cpowl.c(1.83 KB)
📄 s_cproj.c(1.74 KB)
📄 s_cprojf.c(1.66 KB)
📄 s_cprojl.c(1.68 KB)
📄 s_creal.c(1.45 KB)
📄 s_crealf.c(1.45 KB)
📄 s_creall.c(1.46 KB)
📄 s_csinh.c(5.01 KB)
📄 s_csinhf.c(3.06 KB)
📄 s_csqrt.c(3.29 KB)
📄 s_csqrtf.c(2.65 KB)
📄 s_csqrtl.c(3.78 KB)
📄 s_ctanh.c(4.32 KB)
📄 s_ctanhf.c(2.45 KB)
📄 s_erf.c(11 KB)
📄 s_erff.c(5.11 KB)
📄 s_exp2.c(14.03 KB)
📄 s_exp2f.c(4.14 KB)
📄 s_expm1.c(7.18 KB)
📄 s_expm1f.c(3.41 KB)
📄 s_fabs.c(677 B)
📄 s_fabsf.c(765 B)
📄 s_fabsl.c(1.68 KB)
📄 s_fdim.c(1.7 KB)
📄 s_finite.c(700 B)
📄 s_finitef.c(796 B)
📄 s_floor.c(1.74 KB)
📄 s_floorf.c(1.41 KB)
📄 s_floorl.c(2.38 KB)
📄 s_fma.c(7.92 KB)
📄 s_fmaf.c(2.57 KB)
📄 s_fmal.c(7.38 KB)
📄 s_fmax.c(2.01 KB)
📄 s_fmaxf.c(1.88 KB)
📄 s_fmaxl.c(1.98 KB)
📄 s_fmin.c(2.01 KB)
📄 s_fminf.c(1.88 KB)
📄 s_fminl.c(1.98 KB)
📄 s_frexp.c(1.31 KB)
📄 s_frexpf.c(1.02 KB)
📄 s_frexpl.c(2 KB)
📄 s_ilogb.c(1.14 KB)
📄 s_ilogbf.c(976 B)
📄 s_ilogbl.c(1.21 KB)
📄 s_isfinite.c(1.72 KB)
📄 s_isnan.c(2.1 KB)
📄 s_isnormal.c(1.78 KB)
📄 s_llrint.c(156 B)
📄 s_llrintf.c(157 B)
📄 s_llrintl.c(163 B)
📄 s_llround.c(215 B)
📄 s_llroundf.c(216 B)
📄 s_llroundl.c(222 B)
📄 s_log1p.c(5.6 KB)
📄 s_log1pf.c(3.14 KB)
📄 s_logb.c(1.13 KB)
📄 s_logbf.c(1023 B)
📄 s_logbl.c(1.24 KB)
📄 s_lrint.c(2.1 KB)
📄 s_lrintf.c(151 B)
📄 s_lrintl.c(157 B)
📄 s_lround.c(2.45 KB)
📄 s_lroundf.c(208 B)
📄 s_lroundl.c(214 B)
📄 s_modf.c(1.88 KB)
📄 s_modff.c(1.39 KB)
📄 s_modfl.c(3.41 KB)
📄 s_nan.c(3.32 KB)
📄 s_nearbyint.c(2.29 KB)
📄 s_nextafter.c(2.03 KB)
📄 s_nextafterf.c(1.61 KB)
📄 s_nextafterl.c(2.02 KB)
📄 s_nexttoward.c(1.75 KB)
📄 s_nexttowardf.c(1.42 KB)
📄 s_remquo.c(3.86 KB)
📄 s_remquof.c(3.02 KB)
📄 s_remquol.c(4.42 KB)
📄 s_rint.c(2.33 KB)
📄 s_rintf.c(1.22 KB)
📄 s_rintl.c(2.77 KB)
📄 s_round.c(1.83 KB)
📄 s_roundf.c(1.74 KB)
📄 s_roundl.c(1.84 KB)
📄 s_scalbln.c(1.82 KB)
📄 s_scalbn.c(1.9 KB)
📄 s_scalbnf.c(1.67 KB)
📄 s_scalbnl.c(1.9 KB)
📄 s_signbit.c(1.7 KB)
📄 s_signgam.c(61 B)
📄 s_significand.c(727 B)
📄 s_significandf.c(691 B)
📄 s_sin.c(2.18 KB)
📄 s_sincos.c(1.6 KB)
📄 s_sincosf.c(2.57 KB)
📄 s_sincosl.c(2.67 KB)
📄 s_sinf.c(2.18 KB)
📄 s_sinl.c(2.49 KB)
📄 s_tan.c(2.02 KB)
📄 s_tanf.c(1.97 KB)
📄 s_tanh.c(2.02 KB)
📄 s_tanhf.c(1.39 KB)
📄 s_tanhl.c(5.09 KB)
📄 s_tanl.c(2.6 KB)
📄 s_tgammaf.c(1.75 KB)
📄 s_trunc.c(1.5 KB)
📄 s_truncf.c(1.21 KB)
📄 s_truncl.c(1.61 KB)
📄 w_cabs.c(365 B)
📄 w_cabsf.c(350 B)
📄 w_cabsl.c(357 B)
📄 w_drem.c(211 B)
📄 w_dremf.c(254 B)

Editing: e_j0f.c

/* e_j0f.c -- float version of e_j0.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.
 * ====================================================
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * See e_j0.c for complete comments.
 */

#include "math.h"
#include "math_private.h"

static __inline float pzerof(float), qzerof(float);

static const volatile float vone = 1,  vzero = 0;

static const float
huge 	= 1e30,
one	= 1.0,
invsqrtpi=  5.6418961287e-01, /* 0x3f106ebb */
tpi      =  6.3661974669e-01, /* 0x3f22f983 */
 		/* R0/S0 on [0, 2.00] */
R02  =  1.5625000000e-02, /* 0x3c800000 */
R03  = -1.8997929874e-04, /* 0xb947352e */
R04  =  1.8295404516e-06, /* 0x35f58e88 */
R05  = -4.6183270541e-09, /* 0xb19eaf3c */
S01  =  1.5619102865e-02, /* 0x3c7fe744 */
S02  =  1.1692678527e-04, /* 0x38f53697 */
S03  =  5.1354652442e-07, /* 0x3509daa6 */
S04  =  1.1661400734e-09; /* 0x30a045e8 */

static const float zero = 0, qrtr = 0.25;

float
__ieee754_j0f(float x)
{
	float z, s,c,ss,cc,r,u,v;
	int32_t hx,ix;

GET_FLOAT_WORD(hx,x);
	ix = hx&0x7fffffff;
	if(ix>=0x7f800000) return one/(x*x);
	x = fabsf(x);
	if(ix >= 0x40000000) {	/* |x| >= 2.0 */
		sincosf(x, &s, &c);
		ss = s-c;
		cc = s+c;
		if(ix<0x7f000000) {  /* Make sure x+x does not overflow. */
		    z = -cosf(x+x);
		    if ((s*c)<zero) cc = z/ss;
		    else 	    ss = z/cc;
		}
	/*
	 * 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>0x58000000) z = (invsqrtpi*cc)/sqrtf(x); /* |x|>2**49 */
		else {
		    u = pzerof(x); v = qzerof(x);
		    z = invsqrtpi*(u*cc-v*ss)/sqrtf(x);
		}
		return z;
	}
	if(ix<0x3b000000) {	/* |x| < 2**-9 */
	    if(huge+x>one) {	/* raise inexact if x != 0 */
	        if(ix<0x39800000) return one;	/* |x|<2**-12 */
	        else 	      return one - x*x/4;
	    }
	}
	z = x*x;
	r =  z*(R02+z*(R03+z*(R04+z*R05)));
	s =  one+z*(S01+z*(S02+z*(S03+z*S04)));
	if(ix < 0x3F800000) {	/* |x| < 1.00 */
	    return one + z*((r/s)-qrtr);
	} else {
	    u = x/2;
	    return((one+u)*(one-u)+z*(r/s));
	}
}

static const float
u00  = -7.3804296553e-02, /* 0xbd9726b5 */
u01  =  1.7666645348e-01, /* 0x3e34e80d */
u02  = -1.3818567619e-02, /* 0xbc626746 */
u03  =  3.4745343146e-04, /* 0x39b62a69 */
u04  = -3.8140706238e-06, /* 0xb67ff53c */
u05  =  1.9559013964e-08, /* 0x32a802ba */
u06  = -3.9820518410e-11, /* 0xae2f21eb */
v01  =  1.2730483897e-02, /* 0x3c509385 */
v02  =  7.6006865129e-05, /* 0x389f65e0 */
v03  =  2.5915085189e-07, /* 0x348b216c */
v04  =  4.4111031494e-10; /* 0x2ff280c2 */

float
__ieee754_y0f(float x)
{
	float z, s,c,ss,cc,u,v;
	int32_t hx,ix;

GET_FLOAT_WORD(hx,x);
        ix = 0x7fffffff&hx;
	if(ix>=0x7f800000) return  vone/(x+x*x);
	if(ix==0) return -one/vzero;
	if(hx<0) return vzero/vzero;
        if(ix >= 0x40000000) {  /* |x| >= 2.0 */
        /* y0(x) = sqrt(2/(pi*x))*(p0(x)*sin(x0)+q0(x)*cos(x0))
         * where x0 = x-pi/4
         *      Better formula:
         *              cos(x0) = cos(x)cos(pi/4)+sin(x)sin(pi/4)
         *                      =  1/sqrt(2) * (sin(x) + cos(x))
         *              sin(x0) = sin(x)cos(3pi/4)-cos(x)sin(3pi/4)
         *                      =  1/sqrt(2) * (sin(x) - cos(x))
         * To avoid cancellation, use
         *              sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
         * to compute the worse one.
         */
                sincosf(x, &s, &c);
                ss = s-c;
                cc = s+c;
	/*
	 * 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<0x7f000000) {  /* make sure x+x not overflow */
                    z = -cosf(x+x);
                    if ((s*c)<zero) cc = z/ss;
                    else            ss = z/cc;
                }
                if(ix>0x58000000) z = (invsqrtpi*ss)/sqrtf(x); /* |x|>2**49 */
                else {
                    u = pzerof(x); v = qzerof(x);
                    z = invsqrtpi*(u*ss+v*cc)/sqrtf(x);
                }
                return z;
	}
	if(ix<=0x39000000) {	/* x < 2**-13 */
	    return(u00 + tpi*__ieee754_logf(x));
	}
	z = x*x;
	u = u00+z*(u01+z*(u02+z*(u03+z*(u04+z*(u05+z*u06)))));
	v = one+z*(v01+z*(v02+z*(v03+z*v04)));
	return(u/v + tpi*(__ieee754_j0f(x)*__ieee754_logf(x)));
}

/* 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 + (R/S)
 * where  R = pR0 + pR1*s^2 + pR2*s^4 + ... + pR5*s^10
 * 	  S = 1 + pS0*s^2 + ... + pS4*s^10
 * and
 *	| pzero(x)-1-R/S | <= 2  ** ( -60.26)
 */
static const float pR8[6] = { /* for x in [inf, 8]=1/[0,0.125] */
  0.0000000000e+00, /* 0x00000000 */
 -7.0312500000e-02, /* 0xbd900000 */
 -8.0816707611e+00, /* 0xc1014e86 */
 -2.5706311035e+02, /* 0xc3808814 */
 -2.4852163086e+03, /* 0xc51b5376 */
 -5.2530439453e+03, /* 0xc5a4285a */
};
static const float pS8[5] = {
  1.1653436279e+02, /* 0x42e91198 */
  3.8337448730e+03, /* 0x456f9beb */
  4.0597855469e+04, /* 0x471e95db */
  1.1675296875e+05, /* 0x47e4087c */
  4.7627726562e+04, /* 0x473a0bba */
};
static const float pR5[6] = { /* for x in [8,4.5454]=1/[0.125,0.22001] */
 -1.1412546255e-11, /* 0xad48c58a */
 -7.0312492549e-02, /* 0xbd8fffff */
 -4.1596107483e+00, /* 0xc0851b88 */
 -6.7674766541e+01, /* 0xc287597b */
 -3.3123129272e+02, /* 0xc3a59d9b */
 -3.4643338013e+02, /* 0xc3ad3779 */
};
static const float pS5[5] = {
  6.0753936768e+01, /* 0x42730408 */
  1.0512523193e+03, /* 0x44836813 */
  5.9789707031e+03, /* 0x45bad7c4 */
  9.6254453125e+03, /* 0x461665c8 */
  2.4060581055e+03, /* 0x451660ee */
};

static const float pR3[6] = {/* for x in [4.547,2.8571]=1/[0.2199,0.35001] */
 -2.5470459075e-09, /* 0xb12f081b */
 -7.0311963558e-02, /* 0xbd8fffb8 */
 -2.4090321064e+00, /* 0xc01a2d95 */
 -2.1965976715e+01, /* 0xc1afba52 */
 -5.8079170227e+01, /* 0xc2685112 */
 -3.1447946548e+01, /* 0xc1fb9565 */
};
static const float pS3[5] = {
  3.5856033325e+01, /* 0x420f6c94 */
  3.6151397705e+02, /* 0x43b4c1ca */
  1.1936077881e+03, /* 0x44953373 */
  1.1279968262e+03, /* 0x448cffe6 */
  1.7358093262e+02, /* 0x432d94b8 */
};

static const float pR2[6] = {/* for x in [2.8570,2]=1/[0.3499,0.5] */
 -8.8753431271e-08, /* 0xb3be98b7 */
 -7.0303097367e-02, /* 0xbd8ffb12 */
 -1.4507384300e+00, /* 0xbfb9b1cc */
 -7.6356959343e+00, /* 0xc0f4579f */
 -1.1193166733e+01, /* 0xc1331736 */
 -3.2336456776e+00, /* 0xc04ef40d */
};
static const float pS2[5] = {
  2.2220300674e+01, /* 0x41b1c32d */
  1.3620678711e+02, /* 0x430834f0 */
  2.7047027588e+02, /* 0x43873c32 */
  1.5387539673e+02, /* 0x4319e01a */
  1.4657617569e+01, /* 0x416a859a */
};

static __inline float
pzerof(float x)
{
	const float *p,*q;
	float z,r,s;
	int32_t ix;
	GET_FLOAT_WORD(ix,x);
	ix &= 0x7fffffff;
	if(ix>=0x41000000)     {p = pR8; q= pS8;}
	else if(ix>=0x409173eb){p = pR5; q= pS5;}
	else if(ix>=0x4036d917){p = pR3; q= pS3;}
	else                   {p = pR2; q= pS2;}	/* ix>=0x40000000 */
	z = one/(x*x);
	r = p[0]+z*(p[1]+z*(p[2]+z*(p[3]+z*(p[4]+z*p[5]))));
	s = one+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*q[4]))));
	return one+ r/s;
}

/* For x >= 8, the asymptotic expansions of qzero is
 *	-1/8 s + 75/1024 s^3 - ..., where s = 1/x.
 * We approximate pzero by
 * 	qzero(x) = s*(-1.25 + (R/S))
 * where  R = qR0 + qR1*s^2 + qR2*s^4 + ... + qR5*s^10
 * 	  S = 1 + qS0*s^2 + ... + qS5*s^12
 * and
 *	| qzero(x)/s +1.25-R/S | <= 2  ** ( -61.22)
 */
static const float qR8[6] = { /* for x in [inf, 8]=1/[0,0.125] */
  0.0000000000e+00, /* 0x00000000 */
  7.3242187500e-02, /* 0x3d960000 */
  1.1768206596e+01, /* 0x413c4a93 */
  5.5767340088e+02, /* 0x440b6b19 */
  8.8591972656e+03, /* 0x460a6cca */
  3.7014625000e+04, /* 0x471096a0 */
};
static const float qS8[6] = {
  1.6377603149e+02, /* 0x4323c6aa */
  8.0983447266e+03, /* 0x45fd12c2 */
  1.4253829688e+05, /* 0x480b3293 */
  8.0330925000e+05, /* 0x49441ed4 */
  8.4050156250e+05, /* 0x494d3359 */
 -3.4389928125e+05, /* 0xc8a7eb69 */
};

static const float qR5[6] = { /* for x in [8,4.5454]=1/[0.125,0.22001] */
  1.8408595828e-11, /* 0x2da1ec79 */
  7.3242180049e-02, /* 0x3d95ffff */
  5.8356351852e+00, /* 0x40babd86 */
  1.3511157227e+02, /* 0x43071c90 */
  1.0272437744e+03, /* 0x448067cd */
  1.9899779053e+03, /* 0x44f8bf4b */
};
static const float qS5[6] = {
  8.2776611328e+01, /* 0x42a58da0 */
  2.0778142090e+03, /* 0x4501dd07 */
  1.8847289062e+04, /* 0x46933e94 */
  5.6751113281e+04, /* 0x475daf1d */
  3.5976753906e+04, /* 0x470c88c1 */
 -5.3543427734e+03, /* 0xc5a752be */
};

static const float qR3[6] = {/* for x in [4.547,2.8571]=1/[0.2199,0.35001] */
  4.3774099900e-09, /* 0x3196681b */
  7.3241114616e-02, /* 0x3d95ff70 */
  3.3442313671e+00, /* 0x405607e3 */
  4.2621845245e+01, /* 0x422a7cc5 */
  1.7080809021e+02, /* 0x432acedf */
  1.6673394775e+02, /* 0x4326bbe4 */
};
static const float qS3[6] = {
  4.8758872986e+01, /* 0x42430916 */
  7.0968920898e+02, /* 0x44316c1c */
  3.7041481934e+03, /* 0x4567825f */
  6.4604252930e+03, /* 0x45c9e367 */
  2.5163337402e+03, /* 0x451d4557 */
 -1.4924745178e+02, /* 0xc3153f59 */
};

static const float qR2[6] = {/* for x in [2.8570,2]=1/[0.3499,0.5] */
  1.5044444979e-07, /* 0x342189db */
  7.3223426938e-02, /* 0x3d95f62a */
  1.9981917143e+00, /* 0x3fffc4bf */
  1.4495602608e+01, /* 0x4167edfd */
  3.1666231155e+01, /* 0x41fd5471 */
  1.6252708435e+01, /* 0x4182058c */
};
static const float qS2[6] = {
  3.0365585327e+01, /* 0x41f2ecb8 */
  2.6934811401e+02, /* 0x4386ac8f */
  8.4478375244e+02, /* 0x44533229 */
  8.8293585205e+02, /* 0x445cbbe5 */
  2.1266638184e+02, /* 0x4354aa98 */
 -5.3109550476e+00, /* 0xc0a9f358 */
};

static __inline float
qzerof(float x)
{
	static const float eighth = 0.125;
	const float *p,*q;
	float s,r,z;
	int32_t ix;
	GET_FLOAT_WORD(ix,x);
	ix &= 0x7fffffff;
	if(ix>=0x41000000)     {p = qR8; q= qS8;}
	else if(ix>=0x409173eb){p = qR5; q= qS5;}
	else if(ix>=0x4036d917){p = qR3; q= qS3;}
	else                   {p = qR2; q= qS2;}	/* ix>=0x40000000 */
	z = one/(x*x);
	r = p[0]+z*(p[1]+z*(p[2]+z*(p[3]+z*(p[4]+z*p[5]))));
	s = one+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*(q[4]+z*q[5])))));
	return (r/s-eighth)/x;
}

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