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code cleanup of named constants

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zero, one, two, half are replaced by const literals
The policy was to use the f suffix for float consts (1.0f),
but don't use suffix for long double consts (these consts
can be exactly represented as double).
This commit is contained in:
nsz
2012-03-19 23:41:19 +01:00
parent b03255af77
commit 0cbb654791
73 changed files with 513 additions and 623 deletions
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39
src/math/j0f.c
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@ -19,7 +19,6 @@ static float pzerof(float), qzerof(float);
static const float
huge = 1e30,
one = 1.0,
invsqrtpi = 5.6418961287e-01, /* 0x3f106ebb */
tpi = 6.3661974669e-01, /* 0x3f22f983 */
/* R0/S0 on [0, 2.00] */
@ -32,8 +31,6 @@ S02 = 1.1692678527e-04, /* 0x38f53697 */
S03 = 5.1354652442e-07, /* 0x3509daa6 */
S04 = 1.1661400734e-09; /* 0x30a045e8 */
static const float zero = 0.0;
float j0f(float x)
{
float z, s,c,ss,cc,r,u,v;
@ -42,7 +39,7 @@ float j0f(float x)
GET_FLOAT_WORD(hx, x);
ix = hx & 0x7fffffff;
if (ix >= 0x7f800000)
return one/(x*x);
return 1.0f/(x*x);
x = fabsf(x);
if (ix >= 0x40000000) { /* |x| >= 2.0 */
s = sinf(x);
@ -51,7 +48,7 @@ float j0f(float x)
cc = s+c;
if (ix < 0x7f000000) { /* make sure x+x does not overflow */
z = -cosf(x+x);
if (s*c < zero)
if (s*c < 0.0f)
cc = z/ss;
else
ss = z/cc;
@ -71,20 +68,20 @@ float j0f(float x)
}
if (ix < 0x39000000) { /* |x| < 2**-13 */
/* raise inexact if x != 0 */
if (huge+x > one) {
if (huge+x > 1.0f) {
if (ix < 0x32000000) /* |x| < 2**-27 */
return one;
return one - 0.25f*x*x;
return 1.0f;
return 1.0f - 0.25f*x*x;
}
}
z = x*x;
r = z*(R02+z*(R03+z*(R04+z*R05)));
s = one+z*(S01+z*(S02+z*(S03+z*S04)));
s = 1.0f+z*(S01+z*(S02+z*(S03+z*S04)));
if(ix < 0x3F800000) { /* |x| < 1.00 */
return one + z*(-0.25f + (r/s));
return 1.0f + z*(-0.25f + (r/s));
} else {
u = 0.5f*x;
return (one+u)*(one-u) + z*(r/s);
return (1.0f+u)*(1.0f-u) + z*(r/s);
}
}
@ -110,11 +107,11 @@ float y0f(float x)
ix = 0x7fffffff & hx;
/* Y0(NaN) is NaN, y0(-inf) is Nan, y0(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 */
/* y0(x) = sqrt(2/(pi*x))*(p0(x)*sin(x0)+q0(x)*cos(x0))
* where x0 = x-pi/4
@ -137,7 +134,7 @@ float y0f(float x)
*/
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;
@ -156,7 +153,7 @@ float y0f(float 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)));
v = 1.0f+z*(v01+z*(v02+z*(v03+z*v04)));
return u/v + tpi*(j0f(x)*logf(x));
}
@ -244,10 +241,10 @@ static float pzerof(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;
}
@ -340,8 +337,8 @@ static float qzerof(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 (-.125f + r/s)/x;
}