diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_erf.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_erf.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_erf.c b/sysdeps/ieee754/dbl-64/s_erf.c index e25e28d9d5..0cf408c03c 100644 --- a/sysdeps/ieee754/dbl-64/s_erf.c +++ b/sysdeps/ieee754/dbl-64/s_erf.c @@ -209,10 +209,6 @@ double __erf(double x) return x + efx*x; } z = x*x; -#ifdef DO_NOT_USE_THIS - r = pp0+z*(pp1+z*(pp2+z*(pp3+z*pp4))); - s = one+z*(qq1+z*(qq2+z*(qq3+z*(qq4+z*qq5)))); -#else r1 = pp[0]+z*pp[1]; z2=z*z; r2 = pp[2]+z*pp[3]; z4=z2*z2; s1 = one+z*qq[1]; @@ -220,17 +216,12 @@ double __erf(double x) s3 = qq[4]+z*qq[5]; r = r1 + z2*r2 + z4*pp[4]; s = s1 + z2*s2 + z4*s3; -#endif y = r/s; return x + x*y; } if(ix < 0x3ff40000) { /* 0.84375 <= |x| < 1.25 */ double s2,s4,s6,P1,P2,P3,P4,Q1,Q2,Q3,Q4; s = fabs(x)-one; -#ifdef DO_NOT_USE_THIS - P = pa0+s*(pa1+s*(pa2+s*(pa3+s*(pa4+s*(pa5+s*pa6))))); - Q = one+s*(qa1+s*(qa2+s*(qa3+s*(qa4+s*(qa5+s*qa6))))); -#else P1 = pa[0]+s*pa[1]; s2=s*s; Q1 = one+s*qa[1]; s4=s2*s2; P2 = pa[2]+s*pa[3]; s6=s4*s2; @@ -241,7 +232,6 @@ double __erf(double x) Q4 = qa[6]; P = P1 + s2*P2 + s4*P3 + s6*P4; Q = Q1 + s2*Q2 + s4*Q3 + s6*Q4; -#endif if(hx>=0) return erx + P/Q; else return -erx - P/Q; } if (ix >= 0x40180000) { /* inf>|x|>=6 */ @@ -250,12 +240,6 @@ double __erf(double x) x = fabs(x); s = one/(x*x); if(ix< 0x4006DB6E) { /* |x| < 1/0.35 */ -#ifdef DO_NOT_USE_THIS - R=ra0+s*(ra1+s*(ra2+s*(ra3+s*(ra4+s*( - ra5+s*(ra6+s*ra7)))))); - S=one+s*(sa1+s*(sa2+s*(sa3+s*(sa4+s*( - sa5+s*(sa6+s*(sa7+s*sa8))))))); -#else double R1,R2,R3,R4,S1,S2,S3,S4,s2,s4,s6,s8; R1 = ra[0]+s*ra[1];s2 = s*s; S1 = one+s*sa[1]; s4 = s2*s2; @@ -267,14 +251,7 @@ double __erf(double x) S4 = sa[6]+s*sa[7]; R = R1 + s2*R2 + s4*R3 + s6*R4; S = S1 + s2*S2 + s4*S3 + s6*S4 + s8*sa[8]; -#endif } else { /* |x| >= 1/0.35 */ -#ifdef DO_NOT_USE_THIS - R=rb0+s*(rb1+s*(rb2+s*(rb3+s*(rb4+s*( - rb5+s*rb6))))); - S=one+s*(sb1+s*(sb2+s*(sb3+s*(sb4+s*( - sb5+s*(sb6+s*sb7)))))); -#else double R1,R2,R3,S1,S2,S3,S4,s2,s4,s6; R1 = rb[0]+s*rb[1];s2 = s*s; S1 = one+s*sb[1]; s4 = s2*s2; @@ -285,7 +262,6 @@ double __erf(double x) S4 = sb[6]+s*sb[7]; R = R1 + s2*R2 + s4*R3 + s6*rb[6]; S = S1 + s2*S2 + s4*S3 + s6*S4; -#endif } z = x; SET_LOW_WORD(z,0); @@ -314,10 +290,6 @@ double __erfc(double x) if(ix < 0x3c700000) /* |x|<2**-56 */ return one-x; z = x*x; -#ifdef DO_NOT_USE_THIS - r = pp0+z*(pp1+z*(pp2+z*(pp3+z*pp4))); - s = one+z*(qq1+z*(qq2+z*(qq3+z*(qq4+z*qq5)))); -#else r1 = pp[0]+z*pp[1]; z2=z*z; r2 = pp[2]+z*pp[3]; z4=z2*z2; s1 = one+z*qq[1]; @@ -325,7 +297,6 @@ double __erfc(double x) s3 = qq[4]+z*qq[5]; r = r1 + z2*r2 + z4*pp[4]; s = s1 + z2*s2 + z4*s3; -#endif y = r/s; if(hx < 0x3fd00000) { /* x<1/4 */ return one-(x+x*y); @@ -338,10 +309,6 @@ double __erfc(double x) if(ix < 0x3ff40000) { /* 0.84375 <= |x| < 1.25 */ double s2,s4,s6,P1,P2,P3,P4,Q1,Q2,Q3,Q4; s = fabs(x)-one; -#ifdef DO_NOT_USE_THIS - P = pa0+s*(pa1+s*(pa2+s*(pa3+s*(pa4+s*(pa5+s*pa6))))); - Q = one+s*(qa1+s*(qa2+s*(qa3+s*(qa4+s*(qa5+s*qa6))))); -#else P1 = pa[0]+s*pa[1]; s2=s*s; Q1 = one+s*qa[1]; s4=s2*s2; P2 = pa[2]+s*pa[3]; s6=s4*s2; @@ -352,7 +319,6 @@ double __erfc(double x) Q4 = qa[6]; P = P1 + s2*P2 + s4*P3 + s6*P4; Q = Q1 + s2*Q2 + s4*Q3 + s6*Q4; -#endif if(hx>=0) { z = one-erx; return z - P/Q; } else { @@ -363,12 +329,6 @@ double __erfc(double x) x = fabs(x); s = one/(x*x); if(ix< 0x4006DB6D) { /* |x| < 1/.35 ~ 2.857143*/ -#ifdef DO_NOT_USE_THIS - R=ra0+s*(ra1+s*(ra2+s*(ra3+s*(ra4+s*( - ra5+s*(ra6+s*ra7)))))); - S=one+s*(sa1+s*(sa2+s*(sa3+s*(sa4+s*( - sa5+s*(sa6+s*(sa7+s*sa8))))))); -#else double R1,R2,R3,R4,S1,S2,S3,S4,s2,s4,s6,s8; R1 = ra[0]+s*ra[1];s2 = s*s; S1 = one+s*sa[1]; s4 = s2*s2; @@ -380,16 +340,9 @@ double __erfc(double x) S4 = sa[6]+s*sa[7]; R = R1 + s2*R2 + s4*R3 + s6*R4; S = S1 + s2*S2 + s4*S3 + s6*S4 + s8*sa[8]; -#endif } else { /* |x| >= 1/.35 ~ 2.857143 */ double R1,R2,R3,S1,S2,S3,S4,s2,s4,s6; if(hx<0&&ix>=0x40180000) return two-tiny;/* x < -6 */ -#ifdef DO_NOT_USE_THIS - R=rb0+s*(rb1+s*(rb2+s*(rb3+s*(rb4+s*( - rb5+s*rb6))))); - S=one+s*(sb1+s*(sb2+s*(sb3+s*(sb4+s*( - sb5+s*(sb6+s*sb7)))))); -#else R1 = rb[0]+s*rb[1];s2 = s*s; S1 = one+s*sb[1]; s4 = s2*s2; R2 = rb[2]+s*rb[3];s6 = s4*s2; @@ -399,7 +352,6 @@ double __erfc(double x) S4 = sb[6]+s*sb[7]; R = R1 + s2*R2 + s4*R3 + s6*rb[6]; S = S1 + s2*S2 + s4*S3 + s6*S4; -#endif } z = x; SET_LOW_WORD(z,0); |