ptob(9F) manual page
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ptob - convert size in pages to size in bytes
#include <sys/ddi.h>
unsigned long ptob(unsigned long numpages);
Architecture
independent level 1 (DDI/DKI).
- numpages
- Size in number of pages
to convert to size in bytes.
This function returns the number
of bytes that are contained in the specified number of pages. For example,
if the page size is 2048, then ptob(2)
returns 4096. ptob(0) returns
0.
The return value is always the number of bytes in the specified
number of pages. There are no invalid input values, and no checking will
be performed for overflow in the case of a page count whose corresponding
byte count cannot be represented by an unsigned long. Rather, the higher
order bits will be ignored.
ptob() can be called from user or interrupt
context.
btop(9F)
, btopr(9F)
, ddi_ptob(9F)
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