+static nir_ssa_def *
+handle_round(struct vtn_builder *b, enum OpenCLstd_Entrypoints opcode,
+ unsigned num_srcs, nir_ssa_def **srcs,
+ const struct glsl_type *dest_type)
+{
+ nir_ssa_def *src = srcs[0];
+ nir_builder *nb = &b->nb;
+ nir_ssa_def *half = nir_imm_floatN_t(nb, 0.5, src->bit_size);
+ nir_ssa_def *truncated = nir_ftrunc(nb, src);
+ nir_ssa_def *remainder = nir_fsub(nb, src, truncated);
+
+ return nir_bcsel(nb, nir_fge(nb, nir_fabs(nb, remainder), half),
+ nir_fadd(nb, truncated, nir_fsign(nb, src)), truncated);
+}
+