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-rw-r--r--sysdeps/libm-ieee754/e_atan2l.c136
-rw-r--r--sysdeps/libm-ieee754/s_fpclassifyl.c1
-rw-r--r--sysdeps/libm-ieee754/s_isinf.c13
-rw-r--r--sysdeps/libm-ieee754/s_isinff.c11
-rw-r--r--sysdeps/libm-ieee754/s_isinfl.c10
-rw-r--r--sysdeps/libm-ieee754/s_scalbnl.c8
-rw-r--r--sysdeps/libm-ieee754/w_atan2.c7
-rw-r--r--sysdeps/libm-ieee754/w_atan2f.c10
-rw-r--r--sysdeps/libm-ieee754/w_atan2l.c5
-rw-r--r--sysdeps/libm-ieee754/w_pow.c5
-rw-r--r--sysdeps/libm-ieee754/w_powf.c17
-rw-r--r--sysdeps/libm-ieee754/w_powl.c5
12 files changed, 184 insertions, 44 deletions
diff --git a/sysdeps/libm-ieee754/e_atan2l.c b/sysdeps/libm-ieee754/e_atan2l.c
new file mode 100644
index 0000000000..6b76f96533
--- /dev/null
+++ b/sysdeps/libm-ieee754/e_atan2l.c
@@ -0,0 +1,136 @@
+/* e_atan2l.c -- long double version of e_atan2.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, drepper@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/* __ieee754_atan2l(y,x)
+ * Method :
+ * 1. Reduce y to positive by atan2(y,x)=-atan2(-y,x).
+ * 2. Reduce x to positive by (if x and y are unexceptional):
+ * ARG (x+iy) = arctan(y/x) ... if x > 0,
+ * ARG (x+iy) = pi - arctan[y/(-x)] ... if x < 0,
+ *
+ * Special cases:
+ *
+ * ATAN2((anything), NaN ) is NaN;
+ * ATAN2(NAN , (anything) ) is NaN;
+ * ATAN2(+-0, +(anything but NaN)) is +-0 ;
+ * ATAN2(+-0, -(anything but NaN)) is +-pi ;
+ * ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2;
+ * ATAN2(+-(anything but INF and NaN), +INF) is +-0 ;
+ * ATAN2(+-(anything but INF and NaN), -INF) is +-pi;
+ * ATAN2(+-INF,+INF ) is +-pi/4 ;
+ * ATAN2(+-INF,-INF ) is +-3pi/4;
+ * ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2;
+ *
+ * Constants:
+ * The hexadecimal values are the intended ones for the following
+ * constants. The decimal values may be used, provided that the
+ * compiler will convert from decimal to binary accurately enough
+ * to produce the hexadecimal values shown.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const long double
+#else
+static long double
+#endif
+tiny = 1.0e-4900L,
+zero = 0.0,
+pi_o_4 = 7.85398163397448309628202E-01L, /* 0x3FFE, 0xC90FDAA2, 0x2168C235 */
+pi_o_2 = 1.5707963267948966192564E+00L, /* 0x3FFF, 0xC90FDAA2, 0x2168C235 */
+pi = 3.14159265358979323851281E+00L, /* 0x4000, 0xC90FDAA2, 0x2168C235 */
+pi_lo = -5.01655761266833202345176e-20L;/* 0xBFBE, 0xECE675D1, 0xFC8F8CBB */
+
+#ifdef __STDC__
+ long double __ieee754_atan2l(long double y, long double x)
+#else
+ long double __ieee754_atan2l(y,x)
+ long double y,x;
+#endif
+{
+ long double z;
+ int32_t k,m,hx,hy,ix,iy;
+ u_int32_t sx,sy,lx,ly;
+
+ EXTRACT_LDOUBLE_WORDS(sx,hx,lx,x);
+ ix = sx&0x7fff;
+ lx |= hx ^ 0x80000000;
+ EXTRACT_LDOUBLE_WORDS(sy,hy,ly,y);
+ iy = sy&0x7fff;
+ ly |= hy ^ 0x80000000;
+ if(((2*ix|((lx|-lx)>>31))>0xfffe)||
+ ((2*iy|((ly|-ly)>>31))>0xfffe)) /* x or y is NaN */
+ return x+y;
+ if((sx-0x3fff|lx)==0) return __atanl(y); /* x=1.0 */
+ m = ((sy>>15)&1)|((sx>>14)&2); /* 2*sign(x)+sign(y) */
+
+ /* when y = 0 */
+ if((iy|ly)==0) {
+ switch(m) {
+ case 0:
+ case 1: return y; /* atan(+-0,+anything)=+-0 */
+ case 2: return pi+tiny;/* atan(+0,-anything) = pi */
+ case 3: return -pi-tiny;/* atan(-0,-anything) =-pi */
+ }
+ }
+ /* when x = 0 */
+ if((ix|lx)==0) return (sy>=0x8000)? -pi_o_2-tiny: pi_o_2+tiny;
+
+ /* when x is INF */
+ if(ix==0x7fff) {
+ if(iy==0x7fff) {
+ switch(m) {
+ case 0: return pi_o_4+tiny;/* atan(+INF,+INF) */
+ case 1: return -pi_o_4-tiny;/* atan(-INF,+INF) */
+ case 2: return 3.0*pi_o_4+tiny;/*atan(+INF,-INF)*/
+ case 3: return -3.0*pi_o_4-tiny;/*atan(-INF,-INF)*/
+ }
+ } else {
+ switch(m) {
+ case 0: return zero ; /* atan(+...,+INF) */
+ case 1: return -zero ; /* atan(-...,+INF) */
+ case 2: return pi+tiny ; /* atan(+...,-INF) */
+ case 3: return -pi-tiny ; /* atan(-...,-INF) */
+ }
+ }
+ }
+ /* when y is INF */
+ if(iy==0x7fff) return (hy>=0x8000)? -pi_o_2-tiny: pi_o_2+tiny;
+
+ /* compute y/x */
+ k = sy-sx;
+ if(k > 70) z=pi_o_2+0.5*pi_lo; /* |y/x| > 2**70 */
+ else if(sx>=0x8000&&k<-70) z=0.0; /* |y|/x < -2**70 */
+ else z=__atanl(fabsl(y/x)); /* safe to do y/x */
+ switch (m) {
+ case 0: return z ; /* atan(+,+) */
+ case 1: {
+ u_int32_t sz;
+ GET_LDOUBLE_EXP(sz,z);
+ SET_LDOUBLE_EXP(z,sy ^ 0x8000);
+ }
+ return z ; /* atan(-,+) */
+ case 2: return pi-(z-pi_lo);/* atan(+,-) */
+ default: /* case 3 */
+ return (z-pi_lo)-pi;/* atan(-,-) */
+ }
+}
diff --git a/sysdeps/libm-ieee754/s_fpclassifyl.c b/sysdeps/libm-ieee754/s_fpclassifyl.c
index ef37e6f0cc..d7a0e943cf 100644
--- a/sysdeps/libm-ieee754/s_fpclassifyl.c
+++ b/sysdeps/libm-ieee754/s_fpclassifyl.c
@@ -30,6 +30,7 @@ __fpclassifyl (long double x)
int retval = FP_NORMAL;
GET_LDOUBLE_WORDS (ex, hx, lx, x);
+ hx &= 0x7fffffff;
hx |= lx;
ex &= 0x7fff;
if ((ex | hx) == 0)
diff --git a/sysdeps/libm-ieee754/s_isinf.c b/sysdeps/libm-ieee754/s_isinf.c
index b35fc1c41c..d3c2cb55b7 100644
--- a/sysdeps/libm-ieee754/s_isinf.c
+++ b/sysdeps/libm-ieee754/s_isinf.c
@@ -1,5 +1,6 @@
/*
* Written by J.T. Conklin <jtc@netbsd.org>.
+ * Changed to return -1 for -Inf by Ulrich Drepper <drepper@cygnus.com>.
* Public domain.
*/
@@ -8,7 +9,7 @@ static char rcsid[] = "$NetBSD: s_isinf.c,v 1.3 1995/05/11 23:20:14 jtc Exp $";
#endif
/*
- * isinf(x) returns 1 is x is inf, else 0;
+ * isinf(x) returns 1 is x is inf, -1 if x is -inf, else 0;
* no branching!
*/
@@ -22,12 +23,12 @@ static char rcsid[] = "$NetBSD: s_isinf.c,v 1.3 1995/05/11 23:20:14 jtc Exp $";
double x;
#endif
{
- int32_t hx,lx;
+ u_int32_t hx;
+ int32_t lx;
EXTRACT_WORDS(hx,lx,x);
- hx &= 0x7fffffff;
- hx ^= 0x7ff00000;
- hx |= lx;
- return (hx == 0);
+ lx |= (hx & 0x7fffffff) ^ 0x7ff00000;
+ lx |= -lx;
+ return ~(lx >> 31) & (1 - ((hx >> 30) & 2));
}
weak_alias (__isinf, isinf)
#ifdef NO_LONG_DOUBLE
diff --git a/sysdeps/libm-ieee754/s_isinff.c b/sysdeps/libm-ieee754/s_isinff.c
index 1d81f15986..9acc0df6ec 100644
--- a/sysdeps/libm-ieee754/s_isinff.c
+++ b/sysdeps/libm-ieee754/s_isinff.c
@@ -8,7 +8,7 @@ static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $";
#endif
/*
- * isinff(x) returns 1 is x is inf, else 0;
+ * isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0;
* no branching!
*/
@@ -22,10 +22,11 @@ static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $";
float x;
#endif
{
- int32_t ix;
+ int32_t ix,t;
GET_FLOAT_WORD(ix,x);
- ix &= 0x7fffffff;
- ix ^= 0x7f800000;
- return (ix == 0);
+ t = ix & 0x7fffffff;
+ t ^= 0x7f800000;
+ t |= -t;
+ return ~(t >> 31) & (1 - ((ix & 0x80000000) >> 30));
}
weak_alias (__isinff, isinff)
diff --git a/sysdeps/libm-ieee754/s_isinfl.c b/sysdeps/libm-ieee754/s_isinfl.c
index 22dff75444..b499821441 100644
--- a/sysdeps/libm-ieee754/s_isinfl.c
+++ b/sysdeps/libm-ieee754/s_isinfl.c
@@ -9,7 +9,7 @@ static char rcsid[] = "$NetBSD: $";
#endif
/*
- * isinfl(x) returns 1 is x is inf, else 0;
+ * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0;
* no branching!
*/
@@ -25,9 +25,9 @@ static char rcsid[] = "$NetBSD: $";
{
int32_t se,hx,lx;
GET_LDOUBLE_WORDS(se,hx,lx,x);
- se &= 0x7fff;
- se ^= 0x7fff;
- se |= hx | lx;
- return (se == 0);
+ hx |= lx | ((se & 0x7fff) ^ 0x7fff);
+ hx |= -hx;
+ se &= 0x8000;
+ return ~(hx >> 31) & (1 - (se >> 14));
}
weak_alias (__isinfl, isinfl)
diff --git a/sysdeps/libm-ieee754/s_scalbnl.c b/sysdeps/libm-ieee754/s_scalbnl.c
index d00eb88167..6825e9c7b3 100644
--- a/sysdeps/libm-ieee754/s_scalbnl.c
+++ b/sysdeps/libm-ieee754/s_scalbnl.c
@@ -33,10 +33,10 @@ static const long double
#else
static long double
#endif
-two54 = 1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
-twom54 = 5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */
-huge = 1.0e+300,
-tiny = 1.0e-300;
+two54 = 1.80143985094819840000e+16, /* 0x4035, 0x00000000, 0x00000000 */
+twom54 = 5.55111512312578270212e-17, /* 0x3FC9, 0x00000000, 0x00000000 */
+huge = 1.0e+4900L,
+tiny = 1.0e-4900L;
#ifdef __STDC__
long double __scalbnl (long double x, int n)
diff --git a/sysdeps/libm-ieee754/w_atan2.c b/sysdeps/libm-ieee754/w_atan2.c
index ec29d55eb9..3f6032f977 100644
--- a/sysdeps/libm-ieee754/w_atan2.c
+++ b/sysdeps/libm-ieee754/w_atan2.c
@@ -34,11 +34,10 @@ static char rcsid[] = "$NetBSD: w_atan2.c,v 1.6 1995/05/10 20:48:39 jtc Exp $";
#else
double z;
z = __ieee754_atan2(y,x);
- if(_LIB_VERSION == _IEEE_||__isnan(x)||__isnan(y)) return z;
+ if(_LIB_VERSION != _SVID_||__isnan(x)||__isnan(y)) return z;
if(x==0.0&&y==0.0) {
- return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */
- } else
- return z;
+ return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */
+ return z;
#endif
}
weak_alias (__atan2, atan2)
diff --git a/sysdeps/libm-ieee754/w_atan2f.c b/sysdeps/libm-ieee754/w_atan2f.c
index 4d67638572..00b2ce7633 100644
--- a/sysdeps/libm-ieee754/w_atan2f.c
+++ b/sysdeps/libm-ieee754/w_atan2f.c
@@ -8,7 +8,7 @@
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
+ * software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
@@ -17,7 +17,7 @@
static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $";
#endif
-/*
+/*
* wrapper atan2f(y,x)
*/
@@ -38,11 +38,7 @@ static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $";
float z;
z = __ieee754_atan2f(y,x);
if(_LIB_VERSION == _IEEE_||__isnanf(x)||__isnanf(y)) return z;
- if(x==(float)0.0&&y==(float)0.0) {
- /* atan2f(+-0,+-0) */
- return (float)__kernel_standard((double)y,(double)x,103);
- } else
- return z;
+ return z;
#endif
}
weak_alias (__atan2f, atan2f)
diff --git a/sysdeps/libm-ieee754/w_atan2l.c b/sysdeps/libm-ieee754/w_atan2l.c
index 9e6e56bbed..437a04c760 100644
--- a/sysdeps/libm-ieee754/w_atan2l.c
+++ b/sysdeps/libm-ieee754/w_atan2l.c
@@ -39,10 +39,7 @@ static char rcsid[] = "$NetBSD: $";
long double z;
z = __ieee754_atan2l(y,x);
if(_LIB_VERSION == _IEEE_||__isnanl(x)||__isnanl(y)) return z;
- if(x==0.0&&y==0.0) {
- return __kernel_standard(y,x,203); /* atan2l(+-0,+-0) */
- } else
- return z;
+ return z;
#endif
}
weak_alias (__atan2l, atan2l)
diff --git a/sysdeps/libm-ieee754/w_pow.c b/sysdeps/libm-ieee754/w_pow.c
index ea19e1f554..1711d71bda 100644
--- a/sysdeps/libm-ieee754/w_pow.c
+++ b/sysdeps/libm-ieee754/w_pow.c
@@ -43,7 +43,10 @@
if(y==0.0)
return __kernel_standard(x,y,20); /* pow(0.0,0.0) */
if(__finite(y)&&y<0.0)
- return __kernel_standard(x,y,23); /* pow(0.0,negative) */
+ if (signbit (x) && signbit (z))
+ return __kernel_standard(x,y,23); /* pow(-0.0,negative) */
+ else
+ return __kernel_standard(x,y,43); /* pow(+0.0,negative) */
return z;
}
if(!__finite(z)) {
diff --git a/sysdeps/libm-ieee754/w_powf.c b/sysdeps/libm-ieee754/w_powf.c
index 3f9d5c8d5f..0b20822be8 100644
--- a/sysdeps/libm-ieee754/w_powf.c
+++ b/sysdeps/libm-ieee754/w_powf.c
@@ -8,7 +8,7 @@
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
+ * software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
@@ -17,7 +17,7 @@
static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
#endif
-/*
+/*
* wrapper powf(x,y) return x**y
*/
@@ -39,19 +39,22 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
z=__ieee754_powf(x,y);
if(_LIB_VERSION == _IEEE_|| __isnanf(y)) return z;
if(__isnanf(x)) {
- if(y==(float)0.0)
+ if(y==(float)0.0)
/* powf(NaN,0.0) */
return (float)__kernel_standard((double)x,(double)y,142);
- else
+ else
return z;
}
- if(x==(float)0.0){
+ if(x==(float)0.0){
if(y==(float)0.0)
/* powf(0.0,0.0) */
return (float)__kernel_standard((double)x,(double)y,120);
if(__finitef(y)&&y<(float)0.0)
+ if (signbit (x) && signbit (z))
/* powf(0.0,negative) */
return (float)__kernel_standard((double)x,(double)y,123);
+ else
+ return (float)__kernel_standard((double)x,(double)y,143);
return z;
}
if(!__finitef(z)) {
@@ -59,11 +62,11 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
if(__isnanf(z))
/* powf neg**non-int */
return (float)__kernel_standard((double)x,(double)y,124);
- else
+ else
/* powf overflow */
return (float)__kernel_standard((double)x,(double)y,121);
}
- }
+ }
if(z==(float)0.0&&__finitef(x)&&__finitef(y))
/* powf underflow */
return (float)__kernel_standard((double)x,(double)y,122);
diff --git a/sysdeps/libm-ieee754/w_powl.c b/sysdeps/libm-ieee754/w_powl.c
index 019664e0f1..aea572d905 100644
--- a/sysdeps/libm-ieee754/w_powl.c
+++ b/sysdeps/libm-ieee754/w_powl.c
@@ -45,7 +45,10 @@
if(y==0.0)
return __kernel_standard(x,y,220); /* pow(0.0,0.0) */
if(__finite(y)&&y<0.0)
- return __kernel_standard(x,y,223); /* pow(0.0,negative) */
+ if (signbit (x) && signbit (z))
+ return __kernel_standard(x,y,223); /* pow(-0.0,negative) */
+ else
+ return __kernel_standard(x,y,243); /* pow(+0.0,negative) */
return z;
}
if(!__finitel(z)) {
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