Update numio/std.hpp to reflect changes to FloatIO and add half-preci…

…sion preset. Additionally add some popular non-IEEE 754 floating-point formats in numio/fp_extra.hpp

include/numio/fp_extra.hpp

@@ -0,0 +1,26 @@
+#ifndef FP_EXTRA_H
+#define FP_EXTRA_H
+
+// ****************************************************************************
+
+#include "../numio.hpp"
+#include <cstdint>
+
+namespace NumIO
+{
+    /// @brief Google Brain bfloat16 (brain floating point)
+    using bfloat16_IO = FloatIO<float, std::uint16_t, 8, 7>;
+
+    /// @brief NVidia TensorFloat
+    using nv_tf32_IO = FloatIO<float, std::uint32_t, 8, 10>;
+
+    /// @brief AMD fp24
+    using amd_fp24_IO = FloatIO<float, std::uint32_t, 7, 16>;
+
+    /// @brief Pixar PXR24
+    using pxr24_IO = FloatIO<float, std::uint32_t, 8, 15>;
+}
+
+// ****************************************************************************
+
+#endif /* FP_EXTRA_H */

include/numio/std.hpp

@@ -20,8 +20,9 @@ namespace NumIO
     using u32_IO = IntIO<std::uint32_t>;
     using u64_IO = IntIO<std::uint64_t>;
 
-    using f32_IO = FloatIO<float>;
-    using f64_IO = FloatIO<double>;
+    using fp16_IO = FloatIO<float,  std::uint16_t, 5, 10>;
+    using fp32_IO = FloatIO<float,  std::uint32_t>;
+    using fp64_IO = FloatIO<double, std::uint64_t>;
 }
 
 // ****************************************************************************