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-rw-r--r--src/math/j1f.c33
1 files changed, 15 insertions, 18 deletions
diff --git a/src/math/j1f.c b/src/math/j1f.c
index 2d617b67..de459e0d 100644
--- a/src/math/j1f.c
+++ b/src/math/j1f.c
@@ -19,7 +19,6 @@ static float ponef(float), qonef(float);
static const float
huge = 1e30,
-one = 1.0,
invsqrtpi = 5.6418961287e-01, /* 0x3f106ebb */
tpi = 6.3661974669e-01, /* 0x3f22f983 */
/* R0/S0 on [0,2] */
@@ -33,8 +32,6 @@ s03 = 1.1771846857e-06, /* 0x359dffc2 */
s04 = 5.0463624390e-09, /* 0x31ad6446 */
s05 = 1.2354227016e-11; /* 0x2d59567e */
-static const float zero = 0.0;
-
float j1f(float x)
{
float z,s,c,ss,cc,r,u,v,y;
@@ -43,7 +40,7 @@ float j1f(float x)
GET_FLOAT_WORD(hx, x);
ix = hx & 0x7fffffff;
if (ix >= 0x7f800000)
- return one/x;
+ return 1.0f/x;
y = fabsf(x);
if (ix >= 0x40000000) { /* |x| >= 2.0 */
s = sinf(y);
@@ -52,7 +49,7 @@ float j1f(float x)
cc = s-c;
if (ix < 0x7f000000) { /* make sure y+y not overflow */
z = cosf(y+y);
- if (s*c > zero)
+ if (s*c > 0.0f)
cc = z/ss;
else
ss = z/cc;
@@ -74,12 +71,12 @@ float j1f(float x)
}
if (ix < 0x32000000) { /* |x| < 2**-27 */
/* raise inexact if x!=0 */
- if (huge+x > one)
+ if (huge+x > 1.0f)
return 0.5f*x;
}
z = x*x;
r = z*(r00+z*(r01+z*(r02+z*r03)));
- s = one+z*(s01+z*(s02+z*(s03+z*(s04+z*s05))));
+ s = 1.0f+z*(s01+z*(s02+z*(s03+z*(s04+z*s05))));
r *= x;
return 0.5f*x + r/s;
}
@@ -108,11 +105,11 @@ float y1f(float x)
ix = 0x7fffffff & hx;
/* if Y1(NaN) is NaN, Y1(-inf) is NaN, Y1(inf) is 0 */
if (ix >= 0x7f800000)
- return one/(x+x*x);
+ return 1.0f/(x+x*x);
if (ix == 0)
- return -one/zero;
+ return -1.0f/0.0f;
if (hx < 0)
- return zero/zero;
+ return 0.0f/0.0f;
if (ix >= 0x40000000) { /* |x| >= 2.0 */
s = sinf(x);
c = cosf(x);
@@ -120,7 +117,7 @@ float y1f(float x)
cc = s-c;
if (ix < 0x7f000000) { /* make sure x+x not overflow */
z = cosf(x+x);
- if (s*c > zero)
+ if (s*c > 0.0f)
cc = z/ss;
else
ss = z/cc;
@@ -149,8 +146,8 @@ float y1f(float x)
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]))));
- return x*(u/v) + tpi*(j1f(x)*logf(x)-one/x);
+ v = 1.0f+z*(V0[0]+z*(V0[1]+z*(V0[2]+z*(V0[3]+z*V0[4]))));
+ return x*(u/v) + tpi*(j1f(x)*logf(x)-1.0f/x);
}
/* For x >= 8, the asymptotic expansions of pone is
@@ -239,10 +236,10 @@ static float ponef(float x)
else if (ix >= 0x40f71c58){p = pr5; q = ps5;}
else if (ix >= 0x4036db68){p = pr3; q = ps3;}
else if (ix >= 0x40000000){p = pr2; q = ps2;}
- z = one/(x*x);
+ z = 1.0f/(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;
+ 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 qone is
@@ -335,8 +332,8 @@ static float qonef(float x)
else if (ix >= 0x40f71c58){p = qr5; q = qs5;}
else if (ix >= 0x4036db68){p = qr3; q = qs3;}
else if (ix >= 0x40000000){p = qr2; q = qs2;}
- z = one/(x*x);
+ z = 1.0f/(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])))));
+ s = 1.0f+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*(q[4]+z*q[5])))));
return (.375f + r/s)/x;
}