asin(x)=0 if x>1 generate no error. (Message 1 to 1 of 1)
From: Jfkoenig
Subject: asin(x)=0 if x>1 generate no error.
Date: 3 May 2001 00:39:20
Message: <3af0a8b8$1@news.povray.org>
When using asin(x)
sometimes due to roundoff during calculation, x may be out of the range
-1,+1
for example when using x=y/pow(y*y,1/2)
with y= 50000 x=1.0000000000000000100
The problem is that asin(x) doesnt generate an error if x>1
so a test of x must be done before calculation of asin
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jfkoenig [at] chimieu-strasbgfr
u-strasbg