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-rw-r--r--sysdeps/ieee754/dbl-64/e_exp2.c6
-rw-r--r--sysdeps/ieee754/dbl-64/e_log2.c (renamed from sysdeps/ieee754/dbl-64/s_log2.c)12
-rw-r--r--sysdeps/ieee754/dbl-64/s_ilogb.c14
-rw-r--r--sysdeps/ieee754/flt-32/e_exp2f.c6
-rw-r--r--sysdeps/ieee754/flt-32/e_log2f.c (renamed from sysdeps/ieee754/flt-32/s_log2f.c)5
-rw-r--r--sysdeps/ieee754/flt-32/s_ilogbf.c8
-rw-r--r--sysdeps/ieee754/k_standard.c39
-rw-r--r--sysdeps/ieee754/ldbl-128/s_ilogbl.c12
-rw-r--r--sysdeps/ieee754/ldbl-96/e_coshl.c9
-rw-r--r--sysdeps/ieee754/ldbl-96/s_ilogbl.c11
-rw-r--r--sysdeps/ieee754/ldbl-96/s_llroundl.c12
11 files changed, 94 insertions, 40 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_exp2.c b/sysdeps/ieee754/dbl-64/e_exp2.c
index d02af15ecc..699f44ec4e 100644
--- a/sysdeps/ieee754/dbl-64/e_exp2.c
+++ b/sysdeps/ieee754/dbl-64/e_exp2.c
@@ -1,5 +1,5 @@
 /* Double-precision floating point 2^x.
-   Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Geoffrey Keating <geoffk@ozemail.com.au>
 
@@ -44,10 +44,10 @@ double
 __ieee754_exp2 (double x)
 {
   static const double himark = (double) DBL_MAX_EXP;
-  static const double lomark = (double) (DBL_MIN_EXP - DBL_MANT_DIG - 1) - 1.0;
+  static const double lomark = (double) (DBL_MIN_EXP - DBL_MANT_DIG - 1);
 
   /* Check for usual case.  */
-  if (isless (x, himark) && isgreater (x, lomark))
+  if (isless (x, himark) && isgreaterequal (x, lomark))
     {
       static const double THREEp42 = 13194139533312.0;
       int tval, unsafe;
diff --git a/sysdeps/ieee754/dbl-64/s_log2.c b/sysdeps/ieee754/dbl-64/e_log2.c
index 7379ce85e7..f05d0ce966 100644
--- a/sysdeps/ieee754/dbl-64/s_log2.c
+++ b/sysdeps/ieee754/dbl-64/e_log2.c
@@ -10,7 +10,7 @@
  * ====================================================
  */
 
-/* __log2(x)
+/* __ieee754_log2(x)
  * Return the logarithm to base 2 of x
  *
  * Method :
@@ -79,9 +79,9 @@ static double zero   =  0.0;
 #endif
 
 #ifdef __STDC__
-	double __log2(double x)
+	double __ieee754_log2(double x)
 #else
-	double __log2(x)
+	double __ieee754_log2(x)
 	double x;
 #endif
 {
@@ -128,9 +128,3 @@ static double zero   =  0.0;
 	    return dk-((s*(f-R))-f)/ln2;
 	}
 }
-
-weak_alias (__log2, log2)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__log2, __log2l)
-weak_alias (__log2, log2l)
-#endif
diff --git a/sysdeps/ieee754/dbl-64/s_ilogb.c b/sysdeps/ieee754/dbl-64/s_ilogb.c
index 820f01c9b2..89a833781d 100644
--- a/sysdeps/ieee754/dbl-64/s_ilogb.c
+++ b/sysdeps/ieee754/dbl-64/s_ilogb.c
@@ -16,10 +16,12 @@ static char rcsid[] = "$NetBSD: s_ilogb.c,v 1.9 1995/05/10 20:47:28 jtc Exp $";
 
 /* ilogb(double x)
  * return the binary exponent of non-zero x
- * ilogb(0) = 0x80000001
- * ilogb(inf/NaN) = 0x7fffffff (no signal is raised)
+ * ilogb(0) = FP_ILOGB0
+ * ilogb(NaN) = FP_ILOGBNAN (no signal is raised)
+ * ilogb(+-Inf) = INT_MAX (no signal is raised)
  */
 
+#include <limits.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -47,7 +49,13 @@ static char rcsid[] = "$NetBSD: s_ilogb.c,v 1.9 1995/05/10 20:47:28 jtc Exp $";
 	    return ix;
 	}
 	else if (hx<0x7ff00000) return (hx>>20)-1023;
-	else return FP_ILOGBNAN;
+	else if (FP_ILOGBNAN != INT_MAX) {
+	    /* ISO C99 requires ilogb(+-Inf) == INT_MAX.  */
+	    GET_LOW_WORD(lx,x);
+	    if(((hx^0x7ff00000)|lx) == 0)
+		return INT_MAX;
+	}
+	return FP_ILOGBNAN;
 }
 weak_alias (__ilogb, ilogb)
 #ifdef NO_LONG_DOUBLE
diff --git a/sysdeps/ieee754/flt-32/e_exp2f.c b/sysdeps/ieee754/flt-32/e_exp2f.c
index 4d529ea285..263ee16a9f 100644
--- a/sysdeps/ieee754/flt-32/e_exp2f.c
+++ b/sysdeps/ieee754/flt-32/e_exp2f.c
@@ -1,5 +1,5 @@
 /* Single-precision floating point 2^x.
-   Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Geoffrey Keating <geoffk@ozemail.com.au>
 
@@ -45,10 +45,10 @@ float
 __ieee754_exp2f (float x)
 {
   static const float himark = (float) FLT_MAX_EXP;
-  static const float lomark = (float) (FLT_MIN_EXP - FLT_MANT_DIG - 1) - 1.0;
+  static const float lomark = (float) (FLT_MIN_EXP - FLT_MANT_DIG - 1);
 
   /* Check for usual case.  */
-  if (isless (x, himark) && isgreater (x, lomark))
+  if (isless (x, himark) && isgreaterequal (x, lomark))
     {
       static const float THREEp14 = 49152.0;
       int tval, unsafe;
diff --git a/sysdeps/ieee754/flt-32/s_log2f.c b/sysdeps/ieee754/flt-32/e_log2f.c
index 2377acd36a..af3c6eadfe 100644
--- a/sysdeps/ieee754/flt-32/s_log2f.c
+++ b/sysdeps/ieee754/flt-32/e_log2f.c
@@ -40,9 +40,9 @@ static float zero   =  0.0;
 #endif
 
 #ifdef __STDC__
-	float __log2f(float x)
+	float __ieee754_log2f(float x)
 #else
-	float __log2f(x)
+	float __ieee754_log2f(x)
 	float x;
 #endif
 {
@@ -88,4 +88,3 @@ static float zero   =  0.0;
 	    return dk-((s*(f-R))-f)/ln2;
 	}
 }
-weak_alias (__log2f, log2f)
diff --git a/sysdeps/ieee754/flt-32/s_ilogbf.c b/sysdeps/ieee754/flt-32/s_ilogbf.c
index e652b93619..ea3dc13bcb 100644
--- a/sysdeps/ieee754/flt-32/s_ilogbf.c
+++ b/sysdeps/ieee754/flt-32/s_ilogbf.c
@@ -17,6 +17,7 @@
 static char rcsid[] = "$NetBSD: s_ilogbf.c,v 1.4 1995/05/10 20:47:31 jtc Exp $";
 #endif
 
+#include <limits.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -39,6 +40,11 @@ static char rcsid[] = "$NetBSD: s_ilogbf.c,v 1.4 1995/05/10 20:47:31 jtc Exp $";
 	    return ix;
 	}
 	else if (hx<0x7f800000) return (hx>>23)-127;
-	else return FP_ILOGBNAN;
+	else if (FP_ILOGBNAN != INT_MAX) {
+	    /* ISO C99 requires ilogbf(+-Inf) == INT_MAX.  */
+	    if (hx==0x7f800000)
+		return INT_MAX;
+	}
+	return FP_ILOGBNAN;
 }
 weak_alias (__ilogbf, ilogbf)
diff --git a/sysdeps/ieee754/k_standard.c b/sysdeps/ieee754/k_standard.c
index 22300652e9..6def34bc0c 100644
--- a/sysdeps/ieee754/k_standard.c
+++ b/sysdeps/ieee754/k_standard.c
@@ -88,6 +88,8 @@ static double zero = 0.0;	/* used as const */
  *	45-- exp2 underflow
  *	46-- exp10 overflow
  *	47-- exp10 underflow
+ *	48-- log2(0)
+ *	49-- log2(x<0)
  */
 
 
@@ -937,7 +939,42 @@ static double zero = 0.0;	/* used as const */
 			__set_errno (ERANGE);
 		}
 		break;
-		/* #### Last used is 47/147/247 ### */
+	    case 48:
+	    case 148:
+	    case 248:
+		/* log2(0) */
+		exc.type = SING;
+		exc.name = type < 100 ? "log2" : (type < 200
+						   ? "log2f" : "log2l");
+		if (_LIB_VERSION == _SVID_)
+		  exc.retval = -HUGE;
+		else
+		  exc.retval = -HUGE_VAL;
+		if (_LIB_VERSION == _POSIX_)
+		  __set_errno (ERANGE);
+		else if (!matherr(&exc)) {
+		  __set_errno (EDOM);
+		}
+		break;
+	    case 49:
+	    case 149:
+	    case 249:
+		/* log2(x<0) */
+		exc.type = DOMAIN;
+		exc.name = type < 100 ? "log2" : (type < 200
+						   ? "log2f" : "log2l");
+		if (_LIB_VERSION == _SVID_)
+		  exc.retval = -HUGE;
+		else
+		  exc.retval = NAN;
+		if (_LIB_VERSION == _POSIX_)
+		  __set_errno (EDOM);
+		else if (!matherr(&exc)) {
+		  __set_errno (EDOM);
+		}
+		break;
+		
+		/* #### Last used is 49/149/249 ### */
 	}
 	return exc.retval;
 }
diff --git a/sysdeps/ieee754/ldbl-128/s_ilogbl.c b/sysdeps/ieee754/ldbl-128/s_ilogbl.c
index d2acfd3105..c042aa43d8 100644
--- a/sysdeps/ieee754/ldbl-128/s_ilogbl.c
+++ b/sysdeps/ieee754/ldbl-128/s_ilogbl.c
@@ -19,8 +19,9 @@ static char rcsid[] = "$NetBSD: $";
 
 /* ilogbl(long double x)
  * return the binary exponent of non-zero x
- * ilogbl(0) = 0x80000001
- * ilogbl(inf/NaN) = 0x7fffffff (no signal is raised)
+ * ilogbl(0) = FP_ILOGB0
+ * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised)
+ * ilogbl(+-Inf) = INT_MAX (no signal is raised)
  */
 
 #include "math.h"
@@ -50,6 +51,11 @@ static char rcsid[] = "$NetBSD: $";
 	    return ix;
 	}
 	else if (hx<0x7fff000000000000LL) return (hx>>48)-0x3fff;
-	else return FP_ILOGBNAN;
+	else if (FP_ILOGBNAN != INT_MAX) {
+	    /* ISO C99 requires ilogbl(+-Inf) == INT_MAX.  */
+	    if (((hx^0x7fff000000000000LL)|lx) == 0)
+		return INT_MAX;
+	}
+	return FP_ILOGBNAN;
 }
 weak_alias (__ilogbl, ilogbl)
diff --git a/sysdeps/ieee754/ldbl-96/e_coshl.c b/sysdeps/ieee754/ldbl-96/e_coshl.c
index 6af846cb2d..8c38fa4da2 100644
--- a/sysdeps/ieee754/ldbl-96/e_coshl.c
+++ b/sysdeps/ieee754/ldbl-96/e_coshl.c
@@ -79,16 +79,15 @@ static long double one = 1.0, half=0.5, huge = 1.0e4900L;
 	if (ex < 0x400c || (ex == 0x400c && mx < 0xb1700000u))
 		return half*__ieee754_expl(fabsl(x));
 
-    /* |x| in [log(maxdouble), overflowthresold] */
-	if (ex < 0x400d
-	    || (ex == 0x400d && (mx < 0xb170b513u
-				  || (mx == 0xb170b513u && lx < 0xa1dfd60cu))))
+    /* |x| in [log(maxdouble), log(2*maxdouble)) */
+	if (ex == 0x400c && (mx < 0xb174ddc0u
+			     || (mx == 0xb174ddc0u && lx < 0x31aec0ebu)))
 	{
 	    w = __ieee754_expl(half*fabsl(x));
 	    t = half*w;
 	    return t*w;
 	}
 
-    /* |x| > overflowthresold, cosh(x) overflow */
+    /* |x| >= log(2*maxdouble), cosh(x) overflow */
 	return huge*huge;
 }
diff --git a/sysdeps/ieee754/ldbl-96/s_ilogbl.c b/sysdeps/ieee754/ldbl-96/s_ilogbl.c
index d44229dcda..9688f5af8f 100644
--- a/sysdeps/ieee754/ldbl-96/s_ilogbl.c
+++ b/sysdeps/ieee754/ldbl-96/s_ilogbl.c
@@ -20,10 +20,12 @@ static char rcsid[] = "$NetBSD: $";
 
 /* ilogbl(long double x)
  * return the binary exponent of non-zero x
- * ilogbl(0) = 0x80000001
- * ilogbl(inf/NaN) = 0x7fffffff (no signal is raised)
+ * ilogbl(0) = FP_ILOGB0
+ * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised)
+ * ilogbl(+-Inf) = INT_MAX (no signal is raised)
  */
 
+#include <limits.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -51,6 +53,9 @@ static char rcsid[] = "$NetBSD: $";
 	    return ix;
 	}
 	else if (es<0x7fff) return es-0x3fff;
-	else return FP_ILOGBNAN;
+	else if (FP_ILOGBNAN != INT_MAX && (hx|lx) == 0)
+	    /* ISO C99 requires ilogbl(+-Inf) == INT_MAX.  */
+	    return INT_MAX;
+	return FP_ILOGBNAN;
 }
 weak_alias (__ilogbl, ilogbl)
diff --git a/sysdeps/ieee754/ldbl-96/s_llroundl.c b/sysdeps/ieee754/ldbl-96/s_llroundl.c
index 4a537c871e..61df42d3c2 100644
--- a/sysdeps/ieee754/ldbl-96/s_llroundl.c
+++ b/sysdeps/ieee754/ldbl-96/s_llroundl.c
@@ -1,5 +1,5 @@
 /* Round long double value to long long int.
-   Copyright (C) 1997 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2001 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -59,13 +59,13 @@ __llroundl (long double x)
       else
 	{
 	  u_int32_t j = i1 + (0x80000000 >> (j0 - 31));
+
+	  result = (long long int) i0;
 	  if (j < i1)
-	    ++i0;
+	    ++result;
 
-	  if (j0 == 31)
-	    result = (long long int) i0;
-	  else
-	    result = ((long long int) i0 << (j0 - 31)) | (j >> (63 - j0));
+	  if (j0 > 31)
+	    result = (result << (j0 - 31)) | (j >> (63 - j0));
 	}
     }
   else
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-15 08:46:02 +0000