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| author | das <das@FreeBSD.org> | 2005-01-14 23:28:28 +0000 |
|---|---|---|
| committer | das <das@FreeBSD.org> | 2005-01-14 23:28:28 +0000 |
| commit | df8ce09fbda51b1a29af2e321a4c4feb4543aefc (patch) | |
| tree | 7aa790913ac8bac811e6dd89164c064b37167b07 /lib/msun/man/atan2.3 | |
| parent | 2fe7b09cb198e42356fd30dbc005daff0809ff0c (diff) | |
| download | FreeBSD-src-df8ce09fbda51b1a29af2e321a4c4feb4543aefc.zip FreeBSD-src-df8ce09fbda51b1a29af2e321a4c4feb4543aefc.tar.gz | |
Remove numerous references to VAX floating-point and the setting of
errno, replacing them with a discussion of IEEE exceptions where
appropriate. Cross-reference fenv(3) whenever exceptions are
mentioned.
Diffstat (limited to 'lib/msun/man/atan2.3')
| -rw-r--r-- | lib/msun/man/atan2.3 | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/lib/msun/man/atan2.3 b/lib/msun/man/atan2.3 index f951812..3f56497 100644 --- a/lib/msun/man/atan2.3 +++ b/lib/msun/man/atan2.3 @@ -32,7 +32,7 @@ .\" from: @(#)atan2.3 5.1 (Berkeley) 5/2/91 .\" $FreeBSD$ .\" -.Dd May 2, 1991 +.Dd January 14, 2005 .Dt ATAN2 3 .Os .Sh NAME @@ -69,16 +69,7 @@ in the range .Bq \&- Ns \*(Pi , \&+ Ns \*(Pi .Ek radians. -If both -.Fa x -and -.Fa y -are zero, the global variable -.Va errno -is set to -.Er EDOM . -On the -.Tn VAX : +Here are some of the special cases: .Bl -column atan_(y,x)_:=____ sign(y)_(Pi_atan2(Xy_xX))___ .It Fn atan2 y x No := Ta .Fn atan y/x Ta @@ -105,9 +96,7 @@ The function .Fn atan2 defines "if x > 0," .Fn atan2 0 0 -= 0 on a -.Tn VAX -despite that previously += 0 despite that previously .Fn atan2 0 0 may have generated an error message. The reasons for assigning a value to @@ -144,8 +133,7 @@ is mapped to .if n \ (r=0,theta=0) .if t \ -(r=0,\(*h=0) -on a VAX. +(r=0,\(*h=0) . In general, conversions to polar coordinates should be computed thus: .Bd -unfilled -offset indent |
