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Unified Diff: fusl/src/math/j0f.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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Index: fusl/src/math/j0f.c
diff --git a/fusl/src/math/j0f.c b/fusl/src/math/j0f.c
index 45883dc419e9816bbd0ce31af33619484032ee86..6d926d3ac2109463c893b24be4e344fd95831dfe 100644
--- a/fusl/src/math/j0f.c
+++ b/fusl/src/math/j0f.c
@@ -18,113 +18,108 @@
static float pzerof(float), qzerof(float);
-static const float
-invsqrtpi = 5.6418961287e-01, /* 0x3f106ebb */
-tpi = 6.3661974669e-01; /* 0x3f22f983 */
+static const float invsqrtpi = 5.6418961287e-01, /* 0x3f106ebb */
+ tpi = 6.3661974669e-01; /* 0x3f22f983 */
-static float common(uint32_t ix, float x, int y0)
-{
- float z,s,c,ss,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)
- */
- s = sinf(x);
- c = cosf(x);
- if (y0)
- c = -c;
- cc = s+c;
- if (ix < 0x7f000000) {
- ss = s-c;
- z = -cosf(2*x);
- if (s*c < 0)
- cc = z/ss;
- else
- ss = z/cc;
- if (ix < 0x58800000) {
- if (y0)
- ss = -ss;
- cc = pzerof(x)*cc-qzerof(x)*ss;
- }
- }
- return invsqrtpi*cc/sqrtf(x);
+static float common(uint32_t ix, float x, int y0) {
+ float z, s, c, ss, 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)
+ */
+ s = sinf(x);
+ c = cosf(x);
+ if (y0)
+ c = -c;
+ cc = s + c;
+ if (ix < 0x7f000000) {
+ ss = s - c;
+ z = -cosf(2 * x);
+ if (s * c < 0)
+ cc = z / ss;
+ else
+ ss = z / cc;
+ if (ix < 0x58800000) {
+ if (y0)
+ ss = -ss;
+ cc = pzerof(x) * cc - qzerof(x) * ss;
+ }
+ }
+ return invsqrtpi * cc / sqrtf(x);
}
/* R0/S0 on [0, 2.00] */
-static const float
-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 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 */
-float j0f(float x)
-{
- float z,r,s;
- uint32_t ix;
+float j0f(float x) {
+ float z, r, s;
+ uint32_t ix;
- GET_FLOAT_WORD(ix, x);
- ix &= 0x7fffffff;
- if (ix >= 0x7f800000)
- return 1/(x*x);
- x = fabsf(x);
+ GET_FLOAT_WORD(ix, x);
+ ix &= 0x7fffffff;
+ if (ix >= 0x7f800000)
+ return 1 / (x * x);
+ x = fabsf(x);
- if (ix >= 0x40000000) { /* |x| >= 2 */
- /* large ulp error near zeros */
- return common(ix, x, 0);
- }
- if (ix >= 0x3a000000) { /* |x| >= 2**-11 */
- /* up to 4ulp error near 2 */
- z = x*x;
- r = z*(R02+z*(R03+z*(R04+z*R05)));
- s = 1+z*(S01+z*(S02+z*(S03+z*S04)));
- return (1+x/2)*(1-x/2) + z*(r/s);
- }
- if (ix >= 0x21800000) /* |x| >= 2**-60 */
- x = 0.25f*x*x;
- return 1 - x;
+ if (ix >= 0x40000000) { /* |x| >= 2 */
+ /* large ulp error near zeros */
+ return common(ix, x, 0);
+ }
+ if (ix >= 0x3a000000) { /* |x| >= 2**-11 */
+ /* up to 4ulp error near 2 */
+ z = x * x;
+ r = z * (R02 + z * (R03 + z * (R04 + z * R05)));
+ s = 1 + z * (S01 + z * (S02 + z * (S03 + z * S04)));
+ return (1 + x / 2) * (1 - x / 2) + z * (r / s);
+ }
+ if (ix >= 0x21800000) /* |x| >= 2**-60 */
+ x = 0.25f * x * x;
+ return 1 - x;
}
-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 */
+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 y0f(float x)
-{
- float z,u,v;
- uint32_t ix;
+float y0f(float x) {
+ float z, u, v;
+ uint32_t ix;
- GET_FLOAT_WORD(ix, x);
- if ((ix & 0x7fffffff) == 0)
- return -1/0.0f;
- if (ix>>31)
- return 0/0.0f;
- if (ix >= 0x7f800000)
- return 1/x;
- if (ix >= 0x40000000) { /* |x| >= 2.0 */
- /* large ulp error near zeros */
- return common(ix,x,1);
- }
- if (ix >= 0x39000000) { /* x >= 2**-13 */
- /* large ulp error at x ~= 0.89 */
- z = x*x;
- u = u00+z*(u01+z*(u02+z*(u03+z*(u04+z*(u05+z*u06)))));
- v = 1+z*(v01+z*(v02+z*(v03+z*v04)));
- return u/v + tpi*(j0f(x)*logf(x));
- }
- return u00 + tpi*logf(x);
+ GET_FLOAT_WORD(ix, x);
+ if ((ix & 0x7fffffff) == 0)
+ return -1 / 0.0f;
+ if (ix >> 31)
+ return 0 / 0.0f;
+ if (ix >= 0x7f800000)
+ return 1 / x;
+ if (ix >= 0x40000000) { /* |x| >= 2.0 */
+ /* large ulp error near zeros */
+ return common(ix, x, 1);
+ }
+ if (ix >= 0x39000000) { /* x >= 2**-13 */
+ /* large ulp error at x ~= 0.89 */
+ z = x * x;
+ u = u00 +
+ z * (u01 + z * (u02 + z * (u03 + z * (u04 + z * (u05 + z * u06)))));
+ v = 1 + z * (v01 + z * (v02 + z * (v03 + z * v04)));
+ return u / v + tpi * (j0f(x) * logf(x));
+ }
+ return u00 + tpi * logf(x);
}
/* The asymptotic expansions of pzero is
@@ -136,88 +131,99 @@ float y0f(float x)
* 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 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 */
+ 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 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 */
+ 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 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 */
+ 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 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 */
+ 2.2220300674e+01, /* 0x41b1c32d */
+ 1.3620678711e+02, /* 0x430834f0 */
+ 2.7047027588e+02, /* 0x43873c32 */
+ 1.5387539673e+02, /* 0x4319e01a */
+ 1.4657617569e+01, /* 0x416a859a */
};
-static float pzerof(float x)
-{
- const float *p,*q;
- float_t z,r,s;
- uint32_t ix;
+static float pzerof(float x) {
+ const float *p, *q;
+ float_t z, r, s;
+ uint32_t ix;
- GET_FLOAT_WORD(ix, x);
- ix &= 0x7fffffff;
- if (ix >= 0x41000000){p = pR8; q = pS8;}
- else if (ix >= 0x40f71c58){p = pR5; q = pS5;}
- else if (ix >= 0x4036db68){p = pR3; q = pS3;}
- else /*ix >= 0x40000000*/ {p = pR2; q = pS2;}
- z = 1.0f/(x*x);
- r = p[0]+z*(p[1]+z*(p[2]+z*(p[3]+z*(p[4]+z*p[5]))));
- s = 1.0f+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*q[4]))));
- return 1.0f + r/s;
+ GET_FLOAT_WORD(ix, x);
+ ix &= 0x7fffffff;
+ if (ix >= 0x41000000) {
+ p = pR8;
+ q = pS8;
+ } else if (ix >= 0x40f71c58) {
+ p = pR5;
+ q = pS5;
+ } else if (ix >= 0x4036db68) {
+ p = pR3;
+ q = pS3;
+ } else /*ix >= 0x40000000*/ {
+ p = pR2;
+ q = pS2;
+ }
+ z = 1.0f / (x * x);
+ r = p[0] + z * (p[1] + z * (p[2] + z * (p[3] + z * (p[4] + z * p[5]))));
+ s = 1.0f + z * (q[0] + z * (q[1] + z * (q[2] + z * (q[3] + z * q[4]))));
+ return 1.0f + 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
@@ -227,88 +233,101 @@ static float pzerof(float x)
* 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 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 */
+ 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 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 */
+ 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 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 */
+ 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 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 */
+ 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 float qzerof(float x)
-{
- const float *p,*q;
- float_t s,r,z;
- uint32_t ix;
+static float qzerof(float x) {
+ const float *p, *q;
+ float_t s, r, z;
+ uint32_t ix;
- GET_FLOAT_WORD(ix, x);
- ix &= 0x7fffffff;
- if (ix >= 0x41000000){p = qR8; q = qS8;}
- else if (ix >= 0x40f71c58){p = qR5; q = qS5;}
- else if (ix >= 0x4036db68){p = qR3; q = qS3;}
- else /*ix >= 0x40000000*/ {p = qR2; q = qS2;}
- z = 1.0f/(x*x);
- r = p[0]+z*(p[1]+z*(p[2]+z*(p[3]+z*(p[4]+z*p[5]))));
- s = 1.0f+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*(q[4]+z*q[5])))));
- return (-.125f + r/s)/x;
+ GET_FLOAT_WORD(ix, x);
+ ix &= 0x7fffffff;
+ if (ix >= 0x41000000) {
+ p = qR8;
+ q = qS8;
+ } else if (ix >= 0x40f71c58) {
+ p = qR5;
+ q = qS5;
+ } else if (ix >= 0x4036db68) {
+ p = qR3;
+ q = qS3;
+ } else /*ix >= 0x40000000*/ {
+ p = qR2;
+ q = qS2;
+ }
+ z = 1.0f / (x * x);
+ r = p[0] + z * (p[1] + z * (p[2] + z * (p[3] + z * (p[4] + z * p[5]))));
+ s = 1.0f +
+ z * (q[0] + z * (q[1] + z * (q[2] + z * (q[3] + z * (q[4] + z * q[5])))));
+ return (-.125f + r / s) / x;
}
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