Manual Pages for UNIX Operating System command usage for man btopr

Kernel Functions for Drivers                            btopr(9F)



NAME
     btopr - convert size in bytes to size in pages (round up)

SYNOPSIS
     #include 



     unsigned long btopr(unsigned long numbytes);


INTERFACE LEVEL
     Architecture independent level 1 (DDI/DKI).

PARAMETERS
     numbytes    Number of bytes.


DESCRIPTION
     The btopr() function returns the number of memory pages con-
     tained  in  the specified number of bytes memory, rounded up
     to the next whole page. For example, if  the  page  size  is
     2048, then btopr(4096) returns 2, and btopr(4097) returns 3.

RETURN VALUES
     The return value is always the number of pages. There are no
     invalid input values, and therefore no error return values.

CONTEXT
     The btopr() function can be called from user, interrupt,  or
     kernel context.

SEE ALSO
     btop(9F), ddi_btopr(9F), ptob(9F)


     Writing Device Drivers


















SunOS 5.11          Last change: 16 Jan 2006                    1