X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fmath%2Flog1pl.c;h=edb48df1cd9c0ea5bdfb937f377654304651e4c4;hp=17eb4cef6f34a71ddfc063610bfeb41bfd3d7080;hb=8bb181622222f2ee3462c8b021bcae4fcdbbd37a;hpb=9e2a895aaaa4a3985e94ae4f3e24c1af65f9bb34

diff --git a/src/math/log1pl.c b/src/math/log1pl.c
index 17eb4cef..edb48df1 100644
--- a/src/math/log1pl.c
+++ b/src/math/log1pl.c
@@ -46,11 +46,6 @@
  *                      Relative error:
  * arithmetic   domain     # trials      peak         rms
  *    IEEE     -1.0, 9.0    100000      8.2e-20    2.5e-20
- *
- * ERROR MESSAGES:
- *
- * log singularity:  x-1 = 0; returns -INFINITY
- * log domain:       x-1 < 0; returns NAN
  */
 
 #include "libm.h"
@@ -118,13 +113,13 @@ long double log1pl(long double xm1)
 	if (xm1 == 0.0)
 		return xm1;
 
-	x = xm1 + 1.0L;
+	x = xm1 + 1.0;
 
 	/* Test for domain errors.  */
-	if (x <= 0.0L) {
-		if (x == 0.0L)
-			return -INFINITY;
-		return NAN;
+	if (x <= 0.0) {
+		if (x == 0.0)
+			return -1/x; /* -inf with divbyzero */
+		return 0/0.0f; /* nan with invalid */
 	}
 
 	/* Separate mantissa from exponent.
@@ -136,12 +131,12 @@ long double log1pl(long double xm1)
 	if (e > 2 || e < -2) {
 		if (x < SQRTH) { /* 2(2x-1)/(2x+1) */
 			e -= 1;
-			z = x - 0.5L;
-			y = 0.5L * z + 0.5L;
+			z = x - 0.5;
+			y = 0.5 * z + 0.5;
 		} else { /*  2 (x-1)/(x+1)   */
-			z = x - 0.5L;
-			z -= 0.5L;
-			y = 0.5L * x  + 0.5L;
+			z = x - 0.5;
+			z -= 0.5;
+			y = 0.5 * x  + 0.5;
 		}
 		x = z / y;
 		z = x*x;
@@ -156,12 +151,12 @@ long double log1pl(long double xm1)
 	if (x < SQRTH) {
 		e -= 1;
 		if (e != 0)
-			x = 2.0 * x - 1.0L;
+			x = 2.0 * x - 1.0;
 		else
 			x = xm1;
 	} else {
 		if (e != 0)
-			x = x - 1.0L;
+			x = x - 1.0;
 		else
 			x = xm1;
 	}