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fpsetround.c revision 1.1
      1 /*
      2  * Written by J.T. Conklin, Apr 11, 1995
      3  * Public domain.
      4  */
      5 
      6 #include <ieeefp.h>
      7 
      8 fp_rnd
      9 fpsetround(rnd_dir)
     10 	fp_rnd rnd_dir;
     11 {
     12 	fp_rnd old;
     13 	fp_rnd new;
     14 
     15 	__asm__("cfc1 %0,$31" : "=r" (old));
     16 
     17 	new = old;
     18 	new &= ~0x03;
     19 	new |= (rnd_dir & 0x03);
     20 
     21 	__asm__("ctc1 %0,$31" : : "r" (new));
     22 
     23 	return old & 0x03;
     24 }
     25