1 #include <stdio.h> 2 #include <math.h> 3 #include <stdlib.h> 4 convert(long long l)5double convert(long long l) 6 { 7 return (double)l; 8 } 9 main(int argc,char * argv[])10int main(int argc, char * argv[]) { 11 12 long long l = 10; 13 double f; 14 double check = 10.0; 15 16 f = convert(l); 17 printf("convert: %lld => %f\n", l, f); 18 if ( f != check ) exit(1); 19 20 f = 1234.67; 21 check = 1234.0; 22 printf("floorf(%f) = %f\n", f, floorf(f)); 23 if ( floorf(f) != check) exit(1); 24 25 return 0; 26 } 27