Hi, Volk has functions for converting between int and float by casting and multiplying with a scalar. I'd like to purpose functions for the special case where scalar is 1/INT32_MAX (and 1/INT16_MAX etc) as this is a very common use case and might be available to an optimization. Certain CPUs (armv8 in particular [1], not sure about x86? [2]) has hardware instructions for converting fixed point to float and back.
In particular I'm interested in adding the common Q1.31 and Q1.15 formats (full range signed int32_t and full range int16_t to (-1.0)-1.0 float). Would be grateful for input regarding this and in particular ideas for naming the functions. --Albin [1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0801h/pge1427897637493.html [2] https://software.intel.com/en-us/articles/fast-floating-point-to-integer-conversions _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
