1 /* { dg-do run } */ 2 /* { dg-options "-O2 -ffast-math -fno-inline -fno-unroll-loops -lm" } */ 3 4 #include <math.h> 5 6 extern void abort (void); 7 8 #define NVALS 6 9 10 static double convert_it(double x)11convert_it (double x) 12 { 13 return pow (x, 1.0 / 3.0); 14 } 15 16 int main(int argc,char * argv[])17main (int argc, char *argv[]) 18 { 19 double values[NVALS] = { 3.0, 1.95, 2.227, 729.0, 64.0, .0008797 }; 20 double PREC = 0.999999; 21 unsigned i; 22 23 for (i = 0; i < NVALS; i++) 24 if (fabs (convert_it (values[i]) / cbrt (values[i])) < PREC) 25 abort (); 26 27 return 0; 28 } 29