2 log2() function: base 2 logarithm.
12 isnand [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1]
13 frexp [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1]
14 log [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1]
18 gl_CONDITIONAL([GL_COND_OBJ_LOG2],
19 [test $HAVE_LOG2 = 0 || test $REPLACE_LOG2 = 1])
20 gl_MATH_MODULE_INDICATOR([log2])