X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Facoshf.c;h=b773d48e2b84627e0d405a30d9ca8c2994aafe1c;hb=29e4319178cbc2a4e9f058a99ae8098d4b6ac055;hp=8a4ec4d57ead3cbcd473d2ddfdd43d910956f1b9;hpb=4b539a826b64d846d02a6cde9d6bcff22472af88;p=musl

diff --git a/src/math/acoshf.c b/src/math/acoshf.c
index 8a4ec4d5..b773d48e 100644
--- a/src/math/acoshf.c
+++ b/src/math/acoshf.c
@@ -15,12 +15,12 @@ float acoshf(float x)
 	uint32_t a = u.i & 0x7fffffff;
 
 	if (a < 0x3f800000+(1<<23))
-		/* |x| < 2, invalid if x < 1 or nan */
+		/* |x| < 2, invalid if x < 1 */
 		/* up to 2ulp error in [1,1.125] */
 		return log1pf(x-1 + sqrtf((x-1)*(x-1)+2*(x-1)));
-	if (a < 0x3f800000+(12<<23))
-		/* |x| < 0x1p12 */
+	if (u.i < 0x3f800000+(12<<23))
+		/* 2 <= x < 0x1p12 */
 		return logf(2*x - 1/(x+sqrtf(x*x-1)));
-	/* x >= 0x1p12 */
+	/* x >= 0x1p12 or x <= -2 or nan */
 	return logf(x) + 0.693147180559945309417232121458176568f;
 }