SVR5

btop(D3)

btop -- convert size in bytes to size in pages (round down)

Synopsis

   #include <sys/types.h>
   #include <sys/ddi.h>
   
   ulong_t btop(ulong_t numbytes);

Description

btop returns the number of pages that are contained in the specified number of bytes, with downward rounding if the byte count is not a page multiple.

Arguments

numbytes: Size in bytes to convert to equivalent size in pages.

Return values

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

Usage

Context and synchronization

All contexts.

Examples

If the page size is 2048, then btop(4096) and btop(4097) both return 2, and btop(4095) returns 1. btop(0) returns 0.

Hardware applicability

All

Version applicability

ddi: 1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp

References

btopr(D3), ptob(D3)