Original PTX specification:
abs.type d, a; .type = { .s16, .s32, .s64 };
abs{.ftz}.f32 d, a; abs.f64 d, a;
abs{.ftz}.f16 d, a; abs{.ftz}.f16x2 d, a; abs.bf16 d, a; abs.bf16x2 d, a;