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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-07 05:48:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-07 05:48:48 +0000
commitef24de24a82fe681581cc130f342363c47c0969a (patch)
tree0d494f7e1a38b95c92426f58fe6eaa877303a86c /vendor/libm-0.1.4/src/math/j0f.rs
parentReleasing progress-linux version 1.74.1+dfsg1-1~progress7.99u1. (diff)
downloadrustc-ef24de24a82fe681581cc130f342363c47c0969a.tar.xz
rustc-ef24de24a82fe681581cc130f342363c47c0969a.zip
Merging upstream version 1.75.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/libm-0.1.4/src/math/j0f.rs')
-rw-r--r--vendor/libm-0.1.4/src/math/j0f.rs359
1 files changed, 0 insertions, 359 deletions
diff --git a/vendor/libm-0.1.4/src/math/j0f.rs b/vendor/libm-0.1.4/src/math/j0f.rs
deleted file mode 100644
index 91c03dbbc..000000000
--- a/vendor/libm-0.1.4/src/math/j0f.rs
+++ /dev/null
@@ -1,359 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/src/e_j0f.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.
- * ====================================================
- */
-
-use super::{cosf, fabsf, logf, sinf, sqrtf};
-
-const INVSQRTPI: f32 = 5.6418961287e-01; /* 0x3f106ebb */
-const TPI: f32 = 6.3661974669e-01; /* 0x3f22f983 */
-
-fn common(ix: u32, x: f32, y0: bool) -> f32 {
- let z: f32;
- let s: f32;
- let mut c: f32;
- let mut ss: f32;
- let mut cc: f32;
- /*
- * 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(2.0 * x);
- if s * c < 0.0 {
- 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] */
-const R02: f32 = 1.5625000000e-02; /* 0x3c800000 */
-const R03: f32 = -1.8997929874e-04; /* 0xb947352e */
-const R04: f32 = 1.8295404516e-06; /* 0x35f58e88 */
-const R05: f32 = -4.6183270541e-09; /* 0xb19eaf3c */
-const S01: f32 = 1.5619102865e-02; /* 0x3c7fe744 */
-const S02: f32 = 1.1692678527e-04; /* 0x38f53697 */
-const S03: f32 = 5.1354652442e-07; /* 0x3509daa6 */
-const S04: f32 = 1.1661400734e-09; /* 0x30a045e8 */
-
-pub fn j0f(mut x: f32) -> f32 {
- let z: f32;
- let r: f32;
- let s: f32;
- let mut ix: u32;
-
- ix = x.to_bits();
- ix &= 0x7fffffff;
- if ix >= 0x7f800000 {
- return 1.0 / (x * x);
- }
- x = fabsf(x);
-
- if ix >= 0x40000000 {
- /* |x| >= 2 */
- /* large ulp error near zeros */
- return common(ix, x, false);
- }
- 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 = 1.0 + z * (S01 + z * (S02 + z * (S03 + z * S04)));
- return (1.0 + x / 2.0) * (1.0 - x / 2.0) + z * (r / s);
- }
- if ix >= 0x21800000 {
- /* |x| >= 2**-60 */
- x = 0.25 * x * x;
- }
- return 1.0 - x;
-}
-
-const U00: f32 = -7.3804296553e-02; /* 0xbd9726b5 */
-const U01: f32 = 1.7666645348e-01; /* 0x3e34e80d */
-const U02: f32 = -1.3818567619e-02; /* 0xbc626746 */
-const U03: f32 = 3.4745343146e-04; /* 0x39b62a69 */
-const U04: f32 = -3.8140706238e-06; /* 0xb67ff53c */
-const U05: f32 = 1.9559013964e-08; /* 0x32a802ba */
-const U06: f32 = -3.9820518410e-11; /* 0xae2f21eb */
-const V01: f32 = 1.2730483897e-02; /* 0x3c509385 */
-const V02: f32 = 7.6006865129e-05; /* 0x389f65e0 */
-const V03: f32 = 2.5915085189e-07; /* 0x348b216c */
-const V04: f32 = 4.4111031494e-10; /* 0x2ff280c2 */
-
-pub fn y0f(x: f32) -> f32 {
- let z: f32;
- let u: f32;
- let v: f32;
- let ix: u32;
-
- ix = x.to_bits();
- if (ix & 0x7fffffff) == 0 {
- return -1.0 / 0.0;
- }
- if (ix >> 31) != 0 {
- return 0.0 / 0.0;
- }
- if ix >= 0x7f800000 {
- return 1.0 / x;
- }
- if ix >= 0x40000000 {
- /* |x| >= 2.0 */
- /* large ulp error near zeros */
- return common(ix, x, true);
- }
- 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 = 1.0 + 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
- * 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)
- */
-const PR8: [f32; 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 */
-];
-const PS8: [f32; 5] = [
- 1.1653436279e+02, /* 0x42e91198 */
- 3.8337448730e+03, /* 0x456f9beb */
- 4.0597855469e+04, /* 0x471e95db */
- 1.1675296875e+05, /* 0x47e4087c */
- 4.7627726562e+04, /* 0x473a0bba */
-];
-const PR5: [f32; 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 */
-];
-const PS5: [f32; 5] = [
- 6.0753936768e+01, /* 0x42730408 */
- 1.0512523193e+03, /* 0x44836813 */
- 5.9789707031e+03, /* 0x45bad7c4 */
- 9.6254453125e+03, /* 0x461665c8 */
- 2.4060581055e+03, /* 0x451660ee */
-];
-
-const PR3: [f32; 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 */
-];
-const PS3: [f32; 5] = [
- 3.5856033325e+01, /* 0x420f6c94 */
- 3.6151397705e+02, /* 0x43b4c1ca */
- 1.1936077881e+03, /* 0x44953373 */
- 1.1279968262e+03, /* 0x448cffe6 */
- 1.7358093262e+02, /* 0x432d94b8 */
-];
-
-const PR2: [f32; 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 */
-];
-const PS2: [f32; 5] = [
- 2.2220300674e+01, /* 0x41b1c32d */
- 1.3620678711e+02, /* 0x430834f0 */
- 2.7047027588e+02, /* 0x43873c32 */
- 1.5387539673e+02, /* 0x4319e01a */
- 1.4657617569e+01, /* 0x416a859a */
-];
-
-fn pzerof(x: f32) -> f32 {
- let p: &[f32; 6];
- let q: &[f32; 5];
- let z: f32;
- let r: f32;
- let s: f32;
- let mut ix: u32;
-
- ix = x.to_bits();
- 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
- /*ix >= 0x40000000*/
- {
- p = &PR2;
- q = &PS2;
- }
- z = 1.0 / (x * x);
- r = p[0] + z * (p[1] + z * (p[2] + z * (p[3] + z * (p[4] + z * p[5]))));
- s = 1.0 + z * (q[0] + z * (q[1] + z * (q[2] + z * (q[3] + z * q[4]))));
- return 1.0 + 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)
- */
-const QR8: [f32; 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 */
-];
-const QS8: [f32; 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 */
-];
-
-const QR5: [f32; 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 */
-];
-const QS5: [f32; 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 */
-];
-
-const QR3: [f32; 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 */
-];
-const QS3: [f32; 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 */
-];
-
-const QR2: [f32; 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 */
-];
-const QS2: [f32; 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 */
-];
-
-fn qzerof(x: f32) -> f32 {
- let p: &[f32; 6];
- let q: &[f32; 6];
- let s: f32;
- let r: f32;
- let z: f32;
- let mut ix: u32;
-
- ix = x.to_bits();
- 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
- /*ix >= 0x40000000*/
- {
- p = &QR2;
- q = &QS2;
- }
- z = 1.0 / (x * x);
- r = p[0] + z * (p[1] + z * (p[2] + z * (p[3] + z * (p[4] + z * p[5]))));
- s = 1.0 + z * (q[0] + z * (q[1] + z * (q[2] + z * (q[3] + z * (q[4] + z * q[5])))));
- return (-0.125 + r / s) / x;
-}