Function

GLibbit_nth_msf

Declaration

gint
g_bit_nth_msf (
  gulong mask,
  gint nth_bit
)

Description

Find the position of the first bit set in mask, searching from (but not including) nth_bit downwards. Bits are numbered from 0 (least significant) to sizeof(#gulong) * 8 - 1 (31 or 63, usually). To start searching from the last bit, set nth_bit to -1 or GLIB_SIZEOF_LONG * 8.

Parameters

mask gulong
 

A #gulong containing flags.

nth_bit gint
 

The index of the bit to start the search from.

Return value

Returns: int
 

The index of the first bit set which is lower than nth_bit, or -1 if no lower bits are set.