GSL浮点IEEE标准1

#include <stdio.h>#include <gsl/gsl_ieee_utils.h>#pragma comment(lib, "libgsl_d.lib")#pragma comment(lib, "libgslcblas_d.lib")intmain (void) {  float f = 1.0/3.0;  double d = 1.0/3.0;  double fd = f; /* promote from float to double */    printf (" f="); gsl_ieee_printf_float(&f);   printf ("\n");  printf ("fd="); gsl_ieee_printf_double(&fd);   printf ("\n");  printf (" d="); gsl_ieee_printf_double(&d);   printf ("\n");  return 0;}