SKIP: FAILED struct modf_result_f16 { float16_t fract; float16_t whole; }; modf_result_f16 tint_modf(float16_t param_0) { modf_result_f16 result; result.fract = modf(param_0, result.whole); return result; } void modf_8dbbbf() { modf_result_f16 res = tint_modf(float16_t(0.0h)); } struct tint_symbol { float4 value : SV_Position; }; float4 vertex_main_inner() { modf_8dbbbf(); return (0.0f).xxxx; } tint_symbol vertex_main() { const float4 inner_result = vertex_main_inner(); tint_symbol wrapper_result = (tint_symbol)0; wrapper_result.value = inner_result; return wrapper_result; } void fragment_main() { modf_8dbbbf(); return; } [numthreads(1, 1, 1)] void compute_main() { modf_8dbbbf(); return; } FXC validation failure: D:\Projects\RampUp\dawn\test\tint\builtins\Shader@0x0000024604C24BA0(2,3-11): error X3000: unrecognized identifier 'float16_t'