Update.

2001-06-14  Roland McGrath  <roland@frob.com>

	* configure.in: Let sysdeps Implies files in add-ons bring in
	sysdeps directories from the main source and other add-ons too.

2001-06-15  Jakub Jelinek  <jakub@redhat.com>

	* math/test-misc.c (main): Add tests for nextafter and nexttoward
	with +-Inf as second argument.

	* sysdeps/generic/s_nexttowardf.c (__nexttowardf): Only check for
	NaN, not Inf.
	* sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Fix check for NaN.
	* sysdeps/i386/fpu/s_nexttoward.c: New.
	* sysdeps/i386/fpu/s_nexttowardf.c: New.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c (__nexttoward): Simplify
	check for NaN, optimize x==+-0 handling.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c (__nexttowardf): Likewise.
	* sysdeps/ieee754/ldbl-96/s_nextafterl.c (__nextafterl): Simplify
	check for NaN, fix sign in x==+-0 case.
	* sysdeps/ia64/fpu/s_nexttoward.c: New.
	* sysdeps/ia64/fpu/s_nexttowardf.c: New.

2001-06-15  H.J. Lu  <hjl@gnu.org>

	* rt/tst-aio2.c (do_test): Initialize cb.aio_offset to 0.
	* rt/tst-aio3.c (do_test): Likewise.
	* rt/tst-aio4.c (do_test): Likewise.
	* rt/tst-aio5.c (do_test): Likewise.
	* rt/tst-aio6.c (do_test): Likewise.

9 files changed, 197 insertions, 13 deletions

diff --git a/sysdeps/generic/s_nexttowardf.c b/sysdeps/generic/s_nexttowardf.c
index f99b503f4e..1b3a2536ba 100644
--- a/sysdeps/generic/s_nexttowardf.c
+++ b/sysdeps/generic/s_nexttowardf.c
@@ -39,7 +39,7 @@
 	ix = hx&0x7fffffff;		/* |x| */
 	iy = hy&0x7fffffff;		/* |y| */
 
-	if((ix>=0x7f800000) ||				   /* x is nan */
+	if((ix>0x7f800000) ||				   /* x is nan */
 	   ((iy>=0x7ff00000)&&((iy-0x7ff00000)|ly)!=0))    /* y is nan */
 	   return x+y;
 	if((long double) x==y) return y;	/* x=y, return y */
diff --git a/sysdeps/i386/fpu/s_nextafterl.c b/sysdeps/i386/fpu/s_nextafterl.c
index 82a0190ca6..a6ead79221 100644
--- a/sysdeps/i386/fpu/s_nextafterl.c
+++ b/sysdeps/i386/fpu/s_nextafterl.c
@@ -45,10 +45,10 @@ static char rcsid[] = "$NetBSD: $";
 	ix = esx&0x7fff;		/* |x| */
 	iy = esy&0x7fff;		/* |y| */
 
-	/* The additional &hx/&hy is required because Intel's extended format
-           has the normally implicit 1 explicit present.  Sigh!  */
-	if(((ix==0x7fff)&&(((hx|lx)|-(hx|lx))&hx)>>31!=0) ||   /* x is nan */
-	   ((iy==0x7fff)&&(((hy|ly)|-(hy|ly))&hy)>>31!=0))     /* y is nan */
+	/* Intel's extended format has the normally implicit 1 explicit
+	   present.  Sigh!  */
+	if(((ix==0x7fff)&&((hx&0x7fffffff|lx)!=0)) ||   /* x is nan */
+	   ((iy==0x7fff)&&((hy&0x7fffffff|ly)!=0)))     /* y is nan */
 	   return x+y;
 	if(x==y) return y;		/* x=y, return y */
 	if((ix|hx|lx)==0) {			/* x == 0 */
diff --git a/sysdeps/i386/fpu/s_nexttoward.c b/sysdeps/i386/fpu/s_nexttoward.c
new file mode 100644
index 0000000000..6b18df1532
--- /dev/null
+++ b/sysdeps/i386/fpu/s_nexttoward.c
@@ -0,0 +1,101 @@
+/* s_nexttoward.c
+ * Special i387 version
+ * Conversion from s_nextafter.c 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
+
+/* IEEE functions
+ *	nexttoward(x,y)
+ *	return the next machine floating-point number of x in the
+ *	direction toward y.
+ *   Special cases:
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	double __nexttoward(double x, long double y)
+#else
+	double __nexttoward(x,y)
+	double x;
+	long double y;
+#endif
+{
+	int32_t hx,ix,iy;
+	u_int32_t lx,hy,ly,esy;
+
+	EXTRACT_WORDS(hx,lx,x);
+	GET_LDOUBLE_WORDS(esy,hy,ly,y);
+	ix = hx&0x7fffffff;		/* |x| */
+	iy = esy&0x7fff;		/* |y| */
+
+	/* Intel's extended format has the normally implicit 1 explicit
+	   present.  Sigh!  */
+	if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) ||   /* x is nan */
+	   ((iy>=0x7fff)&&((hy&0x7fffffff)|ly)!=0))        /* y is nan */
+	   return x+y;
+	if((long double) x==y) return y;	/* x=y, return y */
+	if((ix|lx)==0) {			/* x == 0 */
+	    double x2;
+	    INSERT_WORDS(x,(esy&0x8000)<<16,1); /* return +-minsub */
+	    x2 = x*x;
+	    if(x2==x) return x2; else return x;	/* raise underflow flag */
+	}
+	if(hx>=0) {				/* x > 0 */
+	    if (esy>=0x8000||((ix>>20)&0x7ff)>iy-0x3c00
+		|| (((ix>>20)&0x7ff)==iy-0x3c00
+		    && (((hx<<11)|(lx>>21))>(hy&0x7fffffff)
+			|| (((hx<<11)|(lx>>21))==(hy&0x7fffffff)
+			    && (lx<<11)>ly)))) {	/* x > y, x -= ulp */
+		if(lx==0) hx -= 1;
+		lx -= 1;
+	    } else {				/* x < y, x += ulp */
+		lx += 1;
+		if(lx==0) hx += 1;
+	    }
+	} else {				/* x < 0 */
+	    if (esy<0x8000||((ix>>20)&0x7ff)>iy-0x3c00
+		|| (((ix>>20)&0x7ff)==iy-0x3c00
+		    && (((hx<<11)|(lx>>21))>(hy&0x7fffffff)
+			|| (((hx<<11)|(lx>>21))==(hy&0x7fffffff)
+			    && (lx<<11)>ly))))	{/* x < y, x -= ulp */
+		if(lx==0) hx -= 1;
+		lx -= 1;
+	    } else {				/* x > y, x += ulp */
+		lx += 1;
+		if(lx==0) hx += 1;
+	    }
+	}
+	hy = hx&0x7ff00000;
+	if(hy>=0x7ff00000) return x+x;	/* overflow  */
+	if(hy<0x00100000) {		/* underflow */
+	    double x2 = x*x;
+	    if(x2!=x) {		/* raise underflow flag */
+	        INSERT_WORDS(x2,hx,lx);
+		return x2;
+	    }
+	}
+	INSERT_WORDS(x,hx,lx);
+	return x;
+}
+weak_alias (__nexttoward, nexttoward)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__nexttoward, __nexttowardl)
+weak_alias (__nexttoward, nexttowardl)
+#endif
diff --git a/sysdeps/i386/fpu/s_nexttowardf.c b/sysdeps/i386/fpu/s_nexttowardf.c
new file mode 100644
index 0000000000..150641f335
--- /dev/null
+++ b/sysdeps/i386/fpu/s_nexttowardf.c
@@ -0,0 +1,81 @@
+/* s_nexttowardf.c -- float version of s_nextafter.c.
+ * Special i387 version.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	float __nexttowardf(float x, long double y)
+#else
+	float __nexttowardf(x,y)
+	float x;
+	long double y;
+#endif
+{
+	int32_t hx,ix,iy;
+	u_int32_t hy,ly,esy;
+
+	GET_FLOAT_WORD(hx,x);
+	GET_LDOUBLE_WORDS(esy,hy,ly,y);
+	ix = hx&0x7fffffff;		/* |x| */
+	iy = esy&0x7fff;		/* |y| */
+
+	/* Intel's extended format has the normally implicit 1 explicit
+	   present.  Sigh!  */
+	if((ix>0x7f800000) ||			/* x is nan */
+	   (iy>=0x7fff&&(((hy&0x7fffffff)|ly)!=0))) /* y is nan */
+	   return x+y;
+	if((long double) x==y) return y;	/* x=y, return y */
+	if(ix==0) {				/* x == 0 */
+	    float x2;
+	    SET_FLOAT_WORD(x,((esy&0x8000)<<16)|1);/* return +-minsub*/
+	    x2 = x*x;
+	    if(x2==x) return x2; else return x;	/* raise underflow flag */
+	}
+	if(hx>=0) {				/* x > 0 */
+	    if(esy>=0x8000||((ix>>23)&0xff)>iy-0x3f80
+	       || (((ix>>23)&0xff)==iy-0x3f80
+		   && ((ix&0x7fffff)<<8)>(hy&0x7fffffff))) {/* x > y, x -= ulp */
+		hx -= 1;
+	    } else {				/* x < y, x += ulp */
+		hx += 1;
+	    }
+	} else {				/* x < 0 */
+	    if(esy<0x8000||((ix>>23)&0xff)>iy-0x3f80
+	       || (((ix>>23)&0xff)==iy-0x3f80
+		   && ((ix&0x7fffff)<<8)>(hy&0x7fffffff))) {/* x < y, x -= ulp */
+		hx -= 1;
+	    } else {				/* x > y, x += ulp */
+		hx += 1;
+	    }
+	}
+	hy = hx&0x7f800000;
+	if(hy>=0x7f800000) return x+x;	/* overflow  */
+	if(hy<0x00800000) {		/* underflow */
+	    float x2 = x*x;
+	    if(x2!=x) {		/* raise underflow flag */
+	        SET_FLOAT_WORD(x2,hx);
+		return x2;
+	    }
+	}
+	SET_FLOAT_WORD(x,hx);
+	return x;
+}
+weak_alias (__nexttowardf, nexttowardf)
diff --git a/sysdeps/ia64/fpu/s_nexttoward.c b/sysdeps/ia64/fpu/s_nexttoward.c
new file mode 100644
index 0000000000..aee2bb5895
--- /dev/null
+++ b/sysdeps/ia64/fpu/s_nexttoward.c
@@ -0,0 +1 @@
+#include <sysdeps/i386/fpu/s_nexttoward.c>
diff --git a/sysdeps/ia64/fpu/s_nexttowardf.c b/sysdeps/ia64/fpu/s_nexttowardf.c
new file mode 100644
index 0000000000..55e95f6916
--- /dev/null
+++ b/sysdeps/ia64/fpu/s_nexttowardf.c
@@ -0,0 +1 @@
+#include <sysdeps/i386/fpu/s_nexttowardf.c>
diff --git a/sysdeps/ieee754/ldbl-96/s_nextafterl.c b/sysdeps/ieee754/ldbl-96/s_nextafterl.c
index aea57e3086..bcbc3049dc 100644
--- a/sysdeps/ieee754/ldbl-96/s_nextafterl.c
+++ b/sysdeps/ieee754/ldbl-96/s_nextafterl.c
@@ -43,12 +43,12 @@ static char rcsid[] = "$NetBSD: $";
 	ix = esx&0x7fff;		/* |x| */
 	iy = esy&0x7fff;		/* |y| */
 
-	if(((ix==0x7fff)&&((hx|lx)|-(hx|lx))!=0) ||   /* x is nan */
-	   ((iy==0x7fff)&&((hy|ly)|-(hy|ly))!=0))     /* y is nan */
+	if(((ix==0x7fff)&&((hx|lx)!=0) ||   /* x is nan */
+	   ((iy==0x7fff)&&((hy|ly)!=0))     /* y is nan */
 	   return x+y;
 	if(x==y) return y;		/* x=y, return y */
 	if((ix|hx|lx)==0) {			/* x == 0 */
-	    SET_LDOUBLE_WORDS(x,esx&0x8000,0,1);/* return +-minsubnormal */
+	    SET_LDOUBLE_WORDS(x,esy&0x8000,0,1);/* return +-minsubnormal */
 	    y = x*x;
 	    if(y==x) return y; else return x;	/* raise underflow flag */
 	}
diff --git a/sysdeps/ieee754/ldbl-96/s_nexttoward.c b/sysdeps/ieee754/ldbl-96/s_nexttoward.c
index 9df393a7bd..c29bcd146d 100644
--- a/sysdeps/ieee754/ldbl-96/s_nexttoward.c
+++ b/sysdeps/ieee754/ldbl-96/s_nexttoward.c
@@ -45,12 +45,12 @@ static char rcsid[] = "$NetBSD: $";
 	iy = esy&0x7fff;		/* |y| */
 
 	if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) ||   /* x is nan */
-	   ((iy>=0x7fff)&&((hy|ly)|-(hy|ly))!=0))           /* y is nan */
+	   ((iy>=0x7fff)&&(hy|ly)!=0))        /* y is nan */
 	   return x+y;
 	if((long double) x==y) return y;	/* x=y, return y */
 	if((ix|lx)==0) {			/* x == 0 */
 	    double x2;
-	    INSERT_WORDS(x,esy&0x8000?0x80000000:0,1);/* return +-minsub */
+	    INSERT_WORDS(x,(esy&0x8000)<<16,1); /* return +-minsub */
 	    x2 = x*x;
 	    if(x2==x) return x2; else return x;	/* raise underflow flag */
 	}
diff --git a/sysdeps/ieee754/ldbl-96/s_nexttowardf.c b/sysdeps/ieee754/ldbl-96/s_nexttowardf.c
index b7e9f00185..a1c38b5d4c 100644
--- a/sysdeps/ieee754/ldbl-96/s_nexttowardf.c
+++ b/sysdeps/ieee754/ldbl-96/s_nexttowardf.c
@@ -36,13 +36,13 @@ static char rcsid[] = "$NetBSD: $";
 	ix = hx&0x7fffffff;		/* |x| */
 	iy = esy&0x7fff;		/* |y| */
 
-	if((ix>0x7f800000) ||   /* x is nan */
-	   (iy>=0x7fff&&((hy|ly)|-(hy|ly))!=0))     /* y is nan */
+	if((ix>0x7f800000) ||			/* x is nan */
+	   (iy>=0x7fff&&((hy|ly)!=0)))		/* y is nan */
 	   return x+y;
 	if((long double) x==y) return y;	/* x=y, return y */
 	if(ix==0) {				/* x == 0 */
 	    float x2;
-	    SET_FLOAT_WORD(x,(esy&0x8000?0x80000000:0)|1);/* return +-minsub*/
+	    SET_FLOAT_WORD(x,((esy&0x8000)<<16)|1);/* return +-minsub*/
 	    x2 = x*x;
 	    if(x2==x) return x2; else return x;	/* raise underflow flag */
 	}