[pixel shader]
uniform float4 f;

float4 main() : sv_target
{
    return exp2(f);
}

[test]
uniform 0 float4 -1.0 0.0 1.0 2.0
draw quad
probe all rgba (0.5, 1.0, 2.0, 4.0) 2

[pixel shader]
uniform float4 f;

float4 main() : sv_target
{
    return exp(f);
}

[test]
uniform 0 float4 -1.0 0.0 1.0 2.0
draw quad
probe all rgba (0.36787948, 1.0, 2.7182815, 7.38905573) 2