2 cbrt() function: cube root.
12 isfinite [test $HAVE_CBRT = 0]
13 fabs [test $HAVE_CBRT = 0]
14 frexp [test $HAVE_CBRT = 0]
15 ldexp [test $HAVE_CBRT = 0]
19 gl_CONDITIONAL([GL_COND_OBJ_CBRT], [test $HAVE_CBRT = 0])
20 gl_MATH_MODULE_INDICATOR([cbrt])