diff options
Diffstat (limited to 'lib/msun/man/erf.3')
| -rw-r--r-- | lib/msun/man/erf.3 | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/lib/msun/man/erf.3 b/lib/msun/man/erf.3 index 46886b0..a9a3e0a 100644 --- a/lib/msun/man/erf.3 +++ b/lib/msun/man/erf.3 @@ -28,14 +28,16 @@ .\" from: @(#)erf.3 6.4 (Berkeley) 4/20/91 .\" $FreeBSD$ .\" -.Dd April 20, 1991 +.Dd July 13, 2014 .Dt ERF 3 .Os .Sh NAME .Nm erf , .Nm erff , +.Nm erfl , .Nm erfc , -.Nm erfcf +.Nm erfcf , +.Nm erfcl .Nd error function operators .Sh LIBRARY .Lb libm @@ -45,18 +47,23 @@ .Fn erf "double x" .Ft float .Fn erff "float x" +.Ft "long double" +.Fn erfl "long double x" .Ft double .Fn erfc "double x" .Ft float .Fn erfcf "float x" +.Ft "long double" +.Fn erfcl "long double x" .Sh DESCRIPTION These functions calculate the error function of .Fa x . .Pp The -.Fn erf -and the -.Fn erff +.Fn erf , +.Fn erff , +and +.Fn erfl functions calculate the error function of x; where .Bd -ragged -offset indent .if n \{\ @@ -69,9 +76,10 @@ erf\|(x) := .Ed .Pp The -.Fn erfc -and the -.Fn erfcf +.Fn erfc , +.Fn erfcf , +and +.Fn erfcl functions calculate the complementary error function of .Fa x ; that is @@ -79,9 +87,6 @@ that is subtracts the result of the error function .Fn erf x from 1.0. -This is useful, since for large -.Fa x -places disappear. .Sh SEE ALSO .Xr math 3 .Sh HISTORY |
