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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)) {
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-07-18 02:23:22 +0000