(→Compiling and Running) |
(→Compiling and Running) |
||
Line 35: | Line 35: | ||
== Compiling and Running == | == Compiling and Running == | ||
− | To compile the Postfix code directly, [[pf2asm]] can be used: | + | To compile the Postfix code directly, [[pf2asm]] can be used (assuming a 32-bit architecture): |
* pf2asm compute.pf | * pf2asm compute.pf |
Consider the following C code:
<c> static unsigned long a = 10; static double *v; extern void *malloc(unsigned long);
static double *mkvec(unsigned long n) {
if (n < 1) return (double *)0; unsigned long s = sizeof(double); double *v = (double *)malloc(n * s); return v;
}
double *compute() {
v = mkvec(a * 4); for (unsigned long i = 1; i < a; i++) if (v[i] > v[0]) v[i] = 3 * i - 1; return v;
} </c>
Assume that the size of pointers, int, and unsigned long is 32 bits and that the size of double is 64 bits.
The Postfix code for the above code is as follows:
<asm>
</asm>
To compile the Postfix code directly, pf2asm can be used (assuming a 32-bit architecture):