Is C6accel really fast?

I try to use MATH (float) functions from c6accel_1_01_00_07 lib in my board OMAP-L138 Experimenter Kit

The problem is that they work very very very slowly. In comparison with with standard +, -, *, /.

Let me to show you a simple example. I have this code

float Two = 2.0; 
float a,b,c;
clock_gettime(clockID, &startTime);
for (i=0; i<1000; i++) {
   a = i;
   C6accel_MATH_powsp(hC6accel,&a,&Two, &b, 1);
   C6accel_MATH_divsp_i(hC6accel,&a, &b, &c, 1);
   C6accel_MATH_mpysp_i(hC6accel,&a, &c,  &b, 1); 
   C6accel_MATH_subsp_i(hC6accel,&b, &a,  &c, 1); 
   C6accel_MATH_addsp_i(hC6accel,&a, &c,  &b, 1); 
}
clock_gettime(clockID, &endTime); 
printf("\nTime of execution (c6accel math): %d sec.\n", endTime.tv_sec - startTime.tv_sec);

//This code has similar functionality as an above code has  
clock_gettime(clockID, &startTime);  
for (i=0; i<1000; i++) {
   a = i;
   b=pow(a,Two);
   c=a/b; 
   b=a*c; 
   c=b-a;  
   b=a+c; 	
}
clock_gettime(clockID, &endTime); 
printf("\nTime of execution (standard): %d sec.\n", endTime.tv_sec - startTime.tv_sec);

Results very upset me. Here they are: 

Time of execution (c6accel math): 7 sec.

Time of execution (standard): 0 sec.

Educate me please, if I should to do some magic manipulations before using c6accel functions? 

P.S. compilation's options: -march=armv5t -mtune=arm9tdmi -mabi=aapcs-linux -O -DPLATFORM=138 

Thank you.