diff options
Diffstat (limited to 'lib/msun/man/sqrt.3')
| -rw-r--r-- | lib/msun/man/sqrt.3 | 42 |
1 files changed, 3 insertions, 39 deletions
diff --git a/lib/msun/man/sqrt.3 b/lib/msun/man/sqrt.3 index d4abf01..9939900 100644 --- a/lib/msun/man/sqrt.3 +++ b/lib/msun/man/sqrt.3 @@ -80,49 +80,13 @@ and the .Fn sqrtf functions return the requested square root unless an error occurs. -On the -.Tn VAX -or -.Tn Tahoe -processor an attempt to take the +An attempt to take the .Fn sqrt of negative .Fa x -causes an error; in this event, -the global variable -.Va errno -is set to -.Er EDOM -and a reserved operand fault is generated. -.Sh ERROR (due to Roundoff etc.) -The -.Fn cbrt -function -is accurate to within 0.7 -.Em ulps . -.Pp -The -.Fn sqrt -function on a -.Tn VAX -is accurate to within 0.501 -.Em ulps . -Sqrt on a machine that conforms to -.Tn IEEE -754 is correctly rounded -in accordance with the rounding mode in force; the error is less than -half an -.Em ulp -in the default mode (round\-to\-nearest). -An -.Em ulp -is one -.Em U Ns nit -in the -.Em L Ns ast -.Em P Ns lace -carried. +raises an invalid exception and causes an \*(Na to be returned. .Sh SEE ALSO +.Xr fenv 3 , .Xr math 3 .Sh STANDARDS The |
