diff options
Diffstat (limited to 'sysdeps/libm-ieee754/e_lgammaf_r.c')
| -rw-r--r-- | sysdeps/libm-ieee754/e_lgammaf_r.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/sysdeps/libm-ieee754/e_lgammaf_r.c b/sysdeps/libm-ieee754/e_lgammaf_r.c index 1d0122dbb2..f744d5320e 100644 --- a/sysdeps/libm-ieee754/e_lgammaf_r.c +++ b/sysdeps/libm-ieee754/e_lgammaf_r.c @@ -8,7 +8,7 @@ * * Developed at SunPro, 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. * ==================================================== */ @@ -21,9 +21,9 @@ static char rcsid[] = "$NetBSD: e_lgammaf_r.c,v 1.3 1995/05/10 20:45:47 jtc Exp #include "math_private.h" #ifdef __STDC__ -static const float +static const float #else -static float +static float #endif two23= 8.3886080000e+06, /* 0x4b000000 */ half= 5.0000000000e-01, /* 0x3f000000 */ @@ -136,9 +136,9 @@ static float zero= 0.0000000000e+00; } switch (n) { case 0: y = __kernel_sinf(pi*y,zero,0); break; - case 1: + case 1: case 2: y = __kernel_cosf(pi*((float)0.5-y),zero); break; - case 3: + case 3: case 4: y = __kernel_sinf(pi*(one-y),zero,0); break; case 5: case 6: y = -__kernel_cosf(pi*(y-(float)1.5),zero); break; @@ -162,9 +162,11 @@ static float zero= 0.0000000000e+00; /* purge off +-inf, NaN, +-0, and negative arguments */ *signgamp = 1; + if ((unsigned int)hx==0xff800000) + return x-x; ix = hx&0x7fffffff; if(ix>=0x7f800000) return x*x; - if(ix==0) return one/zero; + if(ix==0) return one/fabsf(x); if(ix<0x1c800000) { /* |x|<2**-70, return -log(|x|) */ if(hx<0) { *signgamp = -1; @@ -173,9 +175,9 @@ static float zero= 0.0000000000e+00; } if(hx<0) { if(ix>=0x4b000000) /* |x|>=2**23, must be -integer */ - return one/zero; + return x/zero; t = sin_pif(x); - if(t==zero) return one/zero; /* -integer */ + if(t==zero) return one/fabsf(t); /* -integer */ nadj = __ieee754_logf(pi/fabsf(t*x)); if(t<zero) *signgamp = -1; x = -x; @@ -211,7 +213,7 @@ static float zero= 0.0000000000e+00; p3 = t2+w*(t5+w*(t8+w*(t11+w*t14))); p = z*p1-(tt-w*(p2+y*p3)); r += (tf + p); break; - case 2: + case 2: p1 = y*(u0+y*(u1+y*(u2+y*(u3+y*(u4+y*u5))))); p2 = one+y*(v1+y*(v2+y*(v3+y*(v4+y*v5)))); r += (-(float)0.5*y + p1/p2); @@ -240,7 +242,7 @@ static float zero= 0.0000000000e+00; y = z*z; w = w0+z*(w1+y*(w2+y*(w3+y*(w4+y*(w5+y*w6))))); r = (x-half)*(t-one)+w; - } else + } else /* 2**58 <= x <= inf */ r = x*(__ieee754_logf(x)-one); if(hx<0) r = nadj - r; |