about summary refs log tree commit diff
path: root/sysdeps/ieee754/dbl-64/e_j0.c
diff options
context:
space:
mode:
authorAndreas Jaeger <aj@suse.de>2003-12-28 20:51:20 +0000
committerAndreas Jaeger <aj@suse.de>2003-12-28 20:51:20 +0000
commit1f510b3faa316bf025ce9544fd90ece3549bac05 (patch)
tree3ba1bc94e82d3f745a12cb37703a1242da39e72c /sysdeps/ieee754/dbl-64/e_j0.c
parentadd144786f959da569ca4ad3a89c6efd409e762e (diff)
downloadglibc-1f510b3faa316bf025ce9544fd90ece3549bac05.tar.gz
glibc-1f510b3faa316bf025ce9544fd90ece3549bac05.tar.xz
glibc-1f510b3faa316bf025ce9544fd90ece3549bac05.zip
Update.
	* sysdeps/ieee754/dbl-64/e_j0.c (__ieee754_y0): Raise only
	overflow for 0 as argument. Raise Invalid exception for negative
	args.
	* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_yn): Likewise.
	* sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_y0): Likewise.
	* sysdeps/ieee754/ldb-128/e_jnl.c (__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldb-128/e_j0l.c (__ieee754_y0l): Likewise.
	* sysdeps/ieee754/ldb-128/e_j1l.c (__ieee754_y1l): Likewise.
	* sysdeps/ieee754/ldb-96/e_jnl.c (__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldb-96/e_j0l.c (__ieee754_y0l): Likewise.
	* sysdeps/ieee754/ldb-96/e_j1l.c (__ieee754_y1l): Likewise.
	* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_ynf): Likewise.
	* sysdeps/ieee754/flt-32/e_j0f.c (__ieee754_y0f): Likewise.
	* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_y1f): Likewise.

	* math/libm-test.inc (yn_test): Expect invalid exception for
	negative arguments.
	(y0_test): Likewise.
	(y1_test): Likewise.
Diffstat (limited to 'sysdeps/ieee754/dbl-64/e_j0.c')
-rw-r--r--sysdeps/ieee754/dbl-64/e_j0.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_j0.c b/sysdeps/ieee754/dbl-64/e_j0.c
index 77af5fd18c..302df49d62 100644
--- a/sysdeps/ieee754/dbl-64/e_j0.c
+++ b/sysdeps/ieee754/dbl-64/e_j0.c
@@ -185,10 +185,10 @@ V[]  =  {1.27304834834123699328e-02, /* 0x3F8A1270, 0x91C9C71A */
 
 	EXTRACT_WORDS(hx,lx,x);
         ix = 0x7fffffff&hx;
-    /* Y0(NaN) is NaN, y0(-inf) is Nan, y0(inf) is 0  */
+    /* Y0(NaN) is NaN, y0(-inf) is Nan, y0(inf) is 0, y0(0) is -inf.  */
 	if(ix>=0x7ff00000) return  one/(x+x*x);
-        if((ix|lx)==0) return -one/zero;
-        if(hx<0) return zero/zero;
+        if((ix|lx)==0) return -HUGE_VAL+x; /* -inf and overflow exception.  */
+        if(hx<0) return zero/(zero*x);
         if(ix >= 0x40000000) {  /* |x| >= 2.0 */
         /* y0(x) = sqrt(2/(pi*x))*(p0(x)*sin(x0)+q0(x)*cos(x0))
          * where x0 = x-pi/4