ECHO: [-3, 6, -3]
ECHO: [17, -10, 8]
ECHO: [15, 15, 15]
WARNING: Invalid value (NaN) in parameter vector for cross() in file cross-tests.scad, line 5
ECHO: undef
WARNING: Invalid value (INF) in parameter vector for cross() in file cross-tests.scad, line 6
ECHO: undef
WARNING: Invalid value (INF) in parameter vector for cross() in file cross-tests.scad, line 7
ECHO: undef
WARNING: Invalid number of parameters for cross() in file cross-tests.scad, line 9
ECHO: undef
WARNING: Invalid type of parameters for cross() in file cross-tests.scad, line 10
ECHO: undef
WARNING: Invalid type of parameters for cross() in file cross-tests.scad, line 11
ECHO: undef
WARNING: Invalid number of parameters for cross() in file cross-tests.scad, line 12
ECHO: undef
WARNING: Invalid vector size of parameter for cross() in file cross-tests.scad, line 13
ECHO: undef
WARNING: Invalid vector size of parameter for cross() in file cross-tests.scad, line 14
ECHO: undef
WARNING: Invalid value in parameter vector for cross() in file cross-tests.scad, line 15
ECHO: undef
WARNING: Invalid value in parameter vector for cross() in file cross-tests.scad, line 16
ECHO: undef
WARNING: Invalid value in parameter vector for cross() in file cross-tests.scad, line 17
ECHO: undef
ECHO: -3
