/trunk/Examples/d/funcptr/d1/runme.d
D | 42 lines | 29 code | 8 blank | 5 comment | 1 complexity | 34d3c018ac76a8ace26c150775549c54 MD5 | raw file
Possible License(s): LGPL-2.1, Cube, GPL-3.0, 0BSD, GPL-2.0
- module runme;
- import tango.io.Stdout;
- static import example;
- extern(C) int add(int a, int b) {
- return a + b;
- }
- extern(C) int sub(int a, int b) {
- return a - b;
- }
- extern(C) int mul(int a, int b) {
- return a * b;
- }
- void main() {
- int a = 37;
- int b = 42;
- Stdout( "a = " )( a ).newline;
- Stdout( "b = " )( b ).newline;
- Stdout( "Trying some C callback functions:" ).newline;
- Stdout( " ADD(a,b) = " )( example.do_op( a, b, example.ADD ) ).newline;
- Stdout( " SUB(a,b) = " )( example.do_op( a, b, example.SUB ) ).newline;
- Stdout( " MUL(a,b) = " )( example.do_op( a, b, example.MUL ) ).newline;
- version (LDC) {
- // Currently, there is no way to specify the calling convention for
- // function pointer parameters in D, but LDC does strict typechecking for
- // them (which is reasonable, but not covered by the language spec yet).
- // As a result, there is no way to make the code below compile with LDC at
- // the moment, so just skip it.
- } else {
- Stdout( "Now the same with callback functions defined in D:" ).newline;
- Stdout( " add(a,b) = " )( example.do_op( a, b, &add ) ).newline;
- Stdout( " sub(a,b) = " )( example.do_op( a, b, &sub ) ).newline;
- Stdout( " mul(a,b) = " )( example.do_op( a, b, &mul ) ).newline;
- }
- }