svn commit: r336196 - stable/11/lib/msun/src
Mark Johnston
markj at FreeBSD.org
Wed Jul 11 12:12:51 UTC 2018
Author: markj
Date: Wed Jul 11 12:12:49 2018
New Revision: 336196
URL: https://svnweb.freebsd.org/changeset/base/336196
Log:
MFC r336089:
Fix whitespace issues in bessel function routines.
PR: 229423
Modified:
stable/11/lib/msun/src/e_j0.c
stable/11/lib/msun/src/e_j1.c
stable/11/lib/msun/src/e_j1f.c
stable/11/lib/msun/src/e_jn.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/lib/msun/src/e_j0.c
==============================================================================
--- stable/11/lib/msun/src/e_j0.c Wed Jul 11 09:41:50 2018 (r336195)
+++ stable/11/lib/msun/src/e_j0.c Wed Jul 11 12:12:49 2018 (r336196)
@@ -1,4 +1,3 @@
-
/* @(#)e_j0.c 1.3 95/01/18 */
/*
* ====================================================
@@ -6,7 +5,7 @@
*
* Developed at SunSoft, 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.
* ====================================================
*/
@@ -33,20 +32,20 @@ __FBSDID("$FreeBSD$");
* (To avoid cancellation, use
* sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
* to compute the worse one.)
- *
+ *
* 3 Special cases
* j0(nan)= nan
* j0(0) = 1
* j0(inf) = 0
- *
+ *
* Method -- y0(x):
* 1. For x<2.
- * Since
+ * Since
* y0(x) = 2/pi*(j0(x)*(ln(x/2)+Euler) + x^2/4 - ...)
* therefore y0(x)-2/pi*j0(x)*ln(x) is an even function.
* We use the following function to approximate y0,
* y0(x) = U(z)/V(z) + (2/pi)*(j0(x)*ln(x)), z= x^2
- * where
+ * where
* U(z) = u00 + u01*z + ... + u06*z^6
* V(z) = 1 + v01*z + ... + v04*z^4
* with absolute approximation error bounded by 2**-72.
@@ -71,7 +70,7 @@ huge = 1e300,
one = 1.0,
invsqrtpi= 5.64189583547756279280e-01, /* 0x3FE20DD7, 0x50429B6D */
tpi = 6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
- /* R0/S0 on [0, 2.00] */
+/* R0/S0 on [0, 2.00] */
R02 = 1.56249999999999947958e-02, /* 0x3F8FFFFF, 0xFFFFFFFD */
R03 = -1.89979294238854721751e-04, /* 0xBF28E6A5, 0xB61AC6E9 */
R04 = 1.82954049532700665670e-06, /* 0x3EBEB1D1, 0x0C503919 */
@@ -157,7 +156,7 @@ __ieee754_y0(double x)
* y0(Inf) = 0.
* y0(-Inf) = NaN and raise invalid exception.
*/
- if(ix>=0x7ff00000) return vone/(x+x*x);
+ if(ix>=0x7ff00000) return vone/(x+x*x);
/* y0(+-0) = -inf and raise divide-by-zero exception. */
if((ix|lx)==0) return -one/vzero;
/* y0(x<0) = NaN and raise invalid exception. */
@@ -293,7 +292,7 @@ pzero(double x)
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.
Modified: stable/11/lib/msun/src/e_j1.c
==============================================================================
--- stable/11/lib/msun/src/e_j1.c Wed Jul 11 09:41:50 2018 (r336195)
+++ stable/11/lib/msun/src/e_j1.c Wed Jul 11 12:12:49 2018 (r336196)
@@ -1,4 +1,3 @@
-
/* @(#)e_j1.c 1.3 95/01/18 */
/*
* ====================================================
@@ -6,7 +5,7 @@
*
* Developed at SunSoft, 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.
* ====================================================
*/
@@ -34,16 +33,16 @@ __FBSDID("$FreeBSD$");
* (To avoid cancellation, use
* sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
* to compute the worse one.)
- *
+ *
* 3 Special cases
* j1(nan)= nan
* j1(0) = 0
* j1(inf) = 0
- *
+ *
* Method -- y1(x):
- * 1. screen out x<=0 cases: y1(0)=-inf, y1(x<0)=NaN
+ * 1. screen out x<=0 cases: y1(0)=-inf, y1(x<0)=NaN
* 2. For x<2.
- * Since
+ * Since
* y1(x) = 2/pi*(j1(x)*(ln(x/2)+Euler)-1/x-x/2+5/64*x^3-...)
* therefore y1(x)-2/pi*j1(x)*ln(x)-1/x is an odd function.
* We use the following function to approximate y1,
@@ -154,7 +153,7 @@ __ieee754_y1(double x)
* y1(Inf) = 0.
* y1(-Inf) = NaN and raise invalid exception.
*/
- if(ix>=0x7ff00000) return vone/(x+x*x);
+ if(ix>=0x7ff00000) return vone/(x+x*x);
/* y1(+-0) = -inf and raise divide-by-zero exception. */
if((ix|lx)==0) return -one/vzero;
/* y1(x<0) = NaN and raise invalid exception. */
@@ -186,10 +185,10 @@ __ieee754_y1(double x)
z = invsqrtpi*(u*ss+v*cc)/sqrt(x);
}
return z;
- }
+ }
if(ix<=0x3c900000) { /* x < 2**-54 */
return(-tpi/x);
- }
+ }
z = x*x;
u = U0[0]+z*(U0[1]+z*(U0[2]+z*(U0[3]+z*U0[4])));
v = one+z*(V0[0]+z*(V0[1]+z*(V0[2]+z*(V0[3]+z*V0[4]))));
@@ -287,7 +286,7 @@ pone(double x)
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 qone is
* 3/8 s - 105/1024 s^3 - ..., where s = 1/x.
Modified: stable/11/lib/msun/src/e_j1f.c
==============================================================================
--- stable/11/lib/msun/src/e_j1f.c Wed Jul 11 09:41:50 2018 (r336195)
+++ stable/11/lib/msun/src/e_j1f.c Wed Jul 11 12:12:49 2018 (r336196)
@@ -32,7 +32,7 @@ huge = 1e30,
one = 1.0,
invsqrtpi= 5.6418961287e-01, /* 0x3f106ebb */
tpi = 6.3661974669e-01, /* 0x3f22f983 */
- /* R0/S0 on [0,2] */
+/* R0/S0 on [0,2] */
r00 = -6.2500000000e-02, /* 0xbd800000 */
r01 = 1.4070566976e-03, /* 0x3ab86cfd */
r02 = -1.5995563444e-05, /* 0xb7862e36 */
Modified: stable/11/lib/msun/src/e_jn.c
==============================================================================
--- stable/11/lib/msun/src/e_jn.c Wed Jul 11 09:41:50 2018 (r336195)
+++ stable/11/lib/msun/src/e_jn.c Wed Jul 11 12:12:49 2018 (r336196)
@@ -1,4 +1,3 @@
-
/* @(#)e_jn.c 1.4 95/01/18 */
/*
* ====================================================
@@ -6,7 +5,7 @@
*
* Developed at SunSoft, 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.
* ====================================================
*/
@@ -18,7 +17,7 @@ __FBSDID("$FreeBSD$");
* __ieee754_jn(n, x), __ieee754_yn(n, x)
* floating point Bessel's function of the 1st and 2nd kind
* of order n
- *
+ *
* Special cases:
* y0(0)=y1(0)=yn(n,0) = -inf with division by zero signal;
* y0(-ve)=y1(-ve)=yn(n,-ve) are NaN with invalid signal.
@@ -37,7 +36,6 @@ __FBSDID("$FreeBSD$");
* yn(n,x) is similar in all respects, except
* that forward recursion is used for all
* values of n>1.
- *
*/
#include "math.h"
@@ -66,7 +64,7 @@ __ieee754_jn(int n, double x)
ix = 0x7fffffff&hx;
/* if J(n,NaN) is NaN */
if((ix|((u_int32_t)(lx|-lx))>>31)>0x7ff00000) return x+x;
- if(n<0){
+ if(n<0){
n = -n;
x = -x;
hx ^= 0x80000000;
@@ -77,14 +75,14 @@ __ieee754_jn(int n, double x)
x = fabs(x);
if((ix|lx)==0||ix>=0x7ff00000) /* if x is 0 or inf */
b = zero;
- else if((double)n<=x) {
+ else if((double)n<=x) {
/* Safe to use J(n+1,x)=2n/x *J(n,x)-J(n-1,x) */
if(ix>=0x52D00000) { /* x > 2**302 */
- /* (x >> n**2)
+ /* (x >> n**2)
* Jn(x) = cos(x-(2n+1)*pi/4)*sqrt(2/x*pi)
* Yn(x) = sin(x-(2n+1)*pi/4)*sqrt(2/x*pi)
- * Let s=sin(x), c=cos(x),
- * xn=x-(2n+1)*pi/4, sqt2 = sqrt(2),then
+ * Let s=sin(x), c=cos(x),
+ * xn=x-(2n+1)*pi/4, sqt2 = sqrt(2), then
*
* n sin(xn)*sqt2 cos(xn)*sqt2
* ----------------------------------
@@ -100,7 +98,7 @@ __ieee754_jn(int n, double x)
case 3: temp = cos(x)-sin(x); break;
}
b = invsqrtpi*temp/sqrt(x);
- } else {
+ } else {
a = __ieee754_j0(x);
b = __ieee754_j1(x);
for(i=1;i<n;i++){
@@ -111,7 +109,7 @@ __ieee754_jn(int n, double x)
}
} else {
if(ix<0x3e100000) { /* x < 2**-29 */
- /* x is tiny, return the first Taylor expansion of J(n,x)
+ /* x is tiny, return the first Taylor expansion of J(n,x)
* J(n,x) = 1/n!*(x/2)^n - ...
*/
if(n>33) /* underflow */
@@ -126,14 +124,14 @@ __ieee754_jn(int n, double x)
}
} else {
/* use backward recurrence */
- /* x x^2 x^2
+ /* x x^2 x^2
* J(n,x)/J(n-1,x) = ---- ------ ------ .....
* 2n - 2(n+1) - 2(n+2)
*
- * 1 1 1
+ * 1 1 1
* (for large x) = ---- ------ ------ .....
* 2n 2(n+1) 2(n+2)
- * -- - ------ - ------ -
+ * -- - ------ - ------ -
* x x x
*
* Let w = 2n/x and h=2/x, then the above quotient
@@ -149,9 +147,9 @@ __ieee754_jn(int n, double x)
* To determine how many terms needed, let
* Q(0) = w, Q(1) = w(w+h) - 1,
* Q(k) = (w+k*h)*Q(k-1) - Q(k-2),
- * When Q(k) > 1e4 good for single
- * When Q(k) > 1e9 good for double
- * When Q(k) > 1e17 good for quadruple
+ * When Q(k) > 1e4 good for single
+ * When Q(k) > 1e9 good for double
+ * When Q(k) > 1e17 good for quadruple
*/
/* determine k */
double t,v;
@@ -237,11 +235,11 @@ __ieee754_yn(int n, double x)
if(n==1) return(sign*__ieee754_y1(x));
if(ix==0x7ff00000) return zero;
if(ix>=0x52D00000) { /* x > 2**302 */
- /* (x >> n**2)
+ /* (x >> n**2)
* Jn(x) = cos(x-(2n+1)*pi/4)*sqrt(2/x*pi)
* Yn(x) = sin(x-(2n+1)*pi/4)*sqrt(2/x*pi)
- * Let s=sin(x), c=cos(x),
- * xn=x-(2n+1)*pi/4, sqt2 = sqrt(2),then
+ * Let s=sin(x), c=cos(x),
+ * xn=x-(2n+1)*pi/4, sqt2 = sqrt(2), then
*
* n sin(xn)*sqt2 cos(xn)*sqt2
* ----------------------------------
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