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author | das <das@FreeBSD.org> | 2010-12-05 22:11:22 +0000 |
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committer | das <das@FreeBSD.org> | 2010-12-05 22:11:22 +0000 |
commit | 82b52495adf6738472755dbfcbe69c392a3edde2 (patch) | |
tree | 9a4d2764fff9470f5437da3446d5cb873f05bad1 /lib/msun/man/math.3 | |
parent | 225ceb18e8a1729edd452bb883adfdb72d75c769 (diff) | |
download | FreeBSD-src-82b52495adf6738472755dbfcbe69c392a3edde2.zip FreeBSD-src-82b52495adf6738472755dbfcbe69c392a3edde2.tar.gz |
Add log2() and log2f().
Diffstat (limited to 'lib/msun/man/math.3')
-rw-r--r-- | lib/msun/man/math.3 | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/lib/msun/man/math.3 b/lib/msun/man/math.3 index 4690a9a..8e79ce5 100644 --- a/lib/msun/man/math.3 +++ b/lib/msun/man/math.3 @@ -28,7 +28,7 @@ .\" from: @(#)math.3 6.10 (Berkeley) 5/6/91 .\" $FreeBSD$ .\" -.Dd December 16, 2007 +.Dd December 5, 2010 .Dt MATH 3 .Os .Sh NAME @@ -182,7 +182,7 @@ lgamma log gamma function log natural logarithm log10 logarithm to base 10 log1p log(1+x) -.\" log2 base 2 logarithm +log2 base 2 logarithm pow exponential x**y sin trigonometric function sinh hyperbolic function @@ -194,7 +194,7 @@ y1 Bessel function of the second kind of the order 1 yn Bessel function of the second kind of the order n .El .Pp -Unlike the algebraic functions listed earlier, the routines +The routines in this section may not produce a result that is correctly rounded, so reproducible results cannot be guaranteed across platforms. For most of these functions, however, incorrect rounding occurs @@ -221,18 +221,20 @@ and values, were written for or imported into subsequent versions of FreeBSD. .Sh BUGS The -.Fn log2 -function is missing, and many functions are not available in their +.Fn cbrt +function and many of the transcendental functions +are not available in their .Vt "long double" variants. .Pp Many of the routines to compute transcendental functions produce inaccurate results in other than the default rounding mode. .Pp -On some architectures, trigonometric argument reduction is not -performed accurately, resulting in errors greater than 1 +On the i386 platform, trigonometric argument reduction is not +performed accurately for very large arguments, resulting in errors +greater than 1 .Em ulp -for large arguments to +for such arguments to .Fn cos , .Fn sin , and |