ggidev-ge0_3 man page on Mandriva

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ggidev-sign_3(3)		      GGI		      ggidev-sign_3(3)

NAME
       ggidev-sign_3, ggidev-bits_3, ggidev-eq0_3, ggidev-gt0_3, ggidev-ge0_3,
       ggidev-lt0_3, ggidev-le0_3 : triple-int properties

SYNOPSIS
       #include <ggi/internal/triple-int.h>

       int sign_3(unsigned x[3]);

       int bits_3(unsigned x[3]);

       int eq0_3(unsigned x[3]);
       int gt0_3(unsigned x[3]);
       int ge0_3(unsigned x[3]);
       int lt0_3(unsigned x[3]);
       int le0_3(unsigned x[3]);

DESCRIPTION
       sign_3 checks the sign of x.

       bits_3 counts the number of significant bits of x. I.e.	leading	 zeros
       in  a  positive	value  and  leading  ones  in a negative value are not
       counted.

       eq0_3, gt0_3, ge0_3, lt0_3 and le0_3 tests the relation between	x  and
       zero.  eq0_3  tests  if	x is equal to zero, gt0_3 if x is greater than
       zero, ge0_3 if x is greater than or equal to zero, lt0_3 if x  is  less
       than zero and last but not least le0_3 tests if x is less than or equal
       to zero.

RETURN VALUE
       sign_3 returns -1 for negative values, 0 for zero values and 1 for pos‐
       itive values.

       bits_3  returns	0 for x equal to 0 or -1, 1 for x equal to 1 and -2, 2
       for x equal to 2, 3, -3 and -4 etc.

       eq0_3, gt0_3, ge0_3, lt0_3 and le0_3 all returns non-zero if the	 rela‐
       tion is true, and zero otherwise.

EXAMPLES
       Some triple-int tests:

       unsigned x[3];

       assign_int_3(x, 5);
       ASSERT(sign_3(x) == 1);
       ASSERT(bits_3(x) == 3);
       ASSERT(!eq0_3(x));
       ASSERT(gt0_3(x));
       ASSERT(ge0_3(x));
       ASSERT(!lt0_3(x));
       ASSERT(!le0_3(x));

SEE ALSO
       ggidev-triple-int(7), ggidev-assign_int_3(3)

libggi-2.2.x			  2006-12-30		      ggidev-sign_3(3)
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