# Using the Intel® IEEE 754-2008 Binary Floating-Point Conformance Library

Many routines in the libbfp754 Library are more optimized for Intel® microprocessors than for non-Intel microprocessors.

To use the library, include the header file, bfp754.h, in your program.

Here is an example program illustrating the use of the library on Linux* OS. This content is specific to C++; it does not apply to DPC++.

    //binary.c
    #include <stdio.h>
    #include <bfp754.h>
    int main(){
      double a64, b64;
      float c32;
      a64 = 1.000000059604644775390625;
      b64 = 1.1102230246251565404236316680908203125e-16;
      c32 = __binary32_add_binary64_binary64(a64, b64);
      printf("The addition result using the libary: %8.8f\n", c32);
      c32 = a64 + b64;
      printf("The addition result without the libary: %8.8f\n", c32);
      return 0;
    }

The command for compiling `binary.c` is:

    icc -fp-model source -fp-model except binary.c –lbfp754

The output of `a.out` will look similar to the following:

    The addition result using the libary: 1.00000012
    The addition result without the libary: 1.00000000

Parent topic: IEEE 754-2008 Binary Floating-Point Conformance Library