.\"return the arctangent of a float
.DT
atan
$MUDNAME$ driver help
atan

.SH Name
.SI 5
atan() - return the arctangent of a float
.EI

.SH Synopsis
.SI 5
float atan( float f );
.EI

.SH Description
.SP 5 5
Returns the arctangent of its argument, `f', measured in radians.
.EP

.SH See also
.SI 5
acos(), asin(), cos(), sin(), tan()
.EI
