/* Simple test program: bubble sort of a fixed table. */
|
/* Simple test program: bubble sort of a fixed table. */
|
/* This demonstrates some of the compiler's common-subexpression*/
|
/* This demonstrates some of the compiler's common-subexpression*/
|
/* elimination capabilities. For example, inspect the code */
|
/* elimination capabilities. For example, inspect the code */
|
/* generated for procedure Sort_array. See the Programmer's */
|
/* generated for procedure Sort_array. See the Programmer's */
|
/* Guide for how to request an assembly listing on your host. */
|
/* Guide for how to request an assembly listing on your host. */
|
|
|
typedef unsigned char boolean;
|
typedef unsigned char boolean;
|
|
|
void Sort_array();
|
void Sort_array();
|
int Tab[100];
|
int Tab[100];
|
|
|
main () {
|
main () {
|
int I,J,K,L;
|
int I,J,K,L;
|
|
|
for (L = 0; L < 1000; L++) {
|
for (L = 0; L < 1000; L++) {
|
/* Initialize the table that will be sorted. */
|
/* Initialize the table that will be sorted. */
|
K = 0;
|
K = 0;
|
for (I = 9; I >= 0; I--)
|
for (I = 9; I >= 0; I--)
|
for (J = I*10; J < (I+1)*10; J++)
|
for (J = I*10; J < (I+1)*10; J++)
|
Tab[K++] = J&1 ? J+1 : J-1;
|
Tab[K++] = J&1 ? J+1 : J-1;
|
|
|
/* Print_array(); */
|
/* Print_array(); */
|
Sort_array(Tab,99); /* Sort it. */
|
Sort_array(Tab,99); /* Sort it. */
|
/* Print_array(); */
|
/* Print_array(); */
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
void Sort_array(Tab,Last) int Tab[]; int Last; {
|
void Sort_array(Tab,Last) int Tab[]; int Last; {
|
boolean Swap;
|
boolean Swap;
|
int Temp,I;
|
int Temp,I;
|
do {
|
do {
|
Swap = 0;
|
Swap = 0;
|
for (I = 0; I<Last; I++)
|
for (I = 0; I<Last; I++)
|
if (Tab[I] > Tab[I+1]) {
|
if (Tab[I] > Tab[I+1]) {
|
Temp = Tab[I];
|
Temp = Tab[I];
|
Tab[I] = Tab[I+1];
|
Tab[I] = Tab[I+1];
|
Tab[I+1] = Temp;
|
Tab[I+1] = Temp;
|
Swap = 1;
|
Swap = 1;
|
}
|
}
|
}
|
}
|
while (Swap);
|
while (Swap);
|
}
|
}
|
|
|
|
|
void Print_array() {
|
void Print_array() {
|
int I,J;
|
int I,J;
|
/*printf("\nArray Contents:\n");*/
|
/*printf("\nArray Contents:\n");*/
|
for (I=0; I<=9; I++) {
|
for (I=0; I<=9; I++) {
|
/*printf("%5d:",10*I); */
|
/*printf("%5d:",10*I); */
|
for (J=0; J<=9; J++); /*printf("%5d",Tab[10*I+J]); */
|
for (J=0; J<=9; J++); /*printf("%5d",Tab[10*I+J]); */
|
/* printf("\n");*/
|
/* printf("\n");*/
|
}
|
}
|
}
|
}
|
|
|
