diff options
| -rw-r--r-- | sys/man/2/nan | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/man/2/nan b/sys/man/2/nan index 90e39b994..d5edc589b 100644 --- a/sys/man/2/nan +++ b/sys/man/2/nan @@ -45,7 +45,9 @@ is greater than or equal to zero, else negative infinity. .I IsInf returns true if its first argument is infinity -with the same sign as the second argument. +with a sign matching the second argument. +A zero sign matches both negative and positive +infinities. .SH SOURCE .B /sys/src/libc/port/nan.c .SH "SEE ALSO" |