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      1 
      2 #include <stdio.h>
      3 #include <stdlib.h>
      4 
      5 void do_fstenv ( void* p )
      6 {
      7    asm("fldpi ; fld1; fldln2 ; movl 8(%esp), %eax ; fstenv (%eax)");
      8 }
      9 
     10 int main ( void )
     11 {
     12    int i;
     13    unsigned int* buf = malloc(7*sizeof(int));
     14    do_fstenv(buf);
     15    for (i = 0; i < 7; i++) {
     16       printf("%08x ", buf[i]);
     17       if (i > 0 && ((i % 6) == 5))
     18           printf("\n");
     19    }
     20    printf("\n");
     21    return 0;
     22 }
     23