mirror of
https://github.com/ashinn/chibi-scheme.git
synced 2025-05-19 21:59:17 +02:00
8b5eb68238
They can be close()d explicitly with close-file-descriptor, and will close() on gc, but only explicitly closing the last port on them will close the fileno. Notably needed for network sockets where we open separate input and output ports on the same socket.
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
|
|
#include "chibi/eval.h"
|
|
|
|
sexp sexp_apply_times_to_pi(sexp ctx, sexp self, sexp_sint_t n,
|
|
sexp fn, sexp times) {
|
|
int i;
|
|
sexp_gc_var1(tmp);
|
|
sexp_assert_type(ctx, sexp_applicablep, SEXP_PROCEDURE, fn);
|
|
sexp_assert_type(ctx, sexp_fixnump, SEXP_FIXNUM, times);
|
|
sexp_gc_preserve1(ctx, tmp);
|
|
for (i=0; i<sexp_unbox_fixnum(times); i++) {
|
|
tmp = sexp_make_flonum(ctx, 3.14);
|
|
tmp = sexp_apply(ctx, fn, tmp = sexp_list1(ctx, tmp));
|
|
}
|
|
sexp_gc_release1(ctx);
|
|
return SEXP_VOID;
|
|
}
|
|
|
|
int main (int argc, char **argv) {
|
|
sexp ctx, res;
|
|
|
|
/* Create a context and load two modules with C types. */
|
|
ctx = sexp_make_eval_context(NULL, NULL, NULL, 0, 0);
|
|
sexp_load_standard_env(ctx, NULL, SEXP_SEVEN);
|
|
sexp_load_standard_ports(ctx, NULL, stdin, stdout, stderr, 1);
|
|
sexp_define_foreign(ctx, sexp_context_env(ctx),
|
|
"apply-times-to-pi", 2, sexp_apply_times_to_pi);
|
|
sexp_eval_string(ctx, "(define counter 0)", -1, NULL);
|
|
sexp_eval_string(ctx,
|
|
"(apply-times-to-pi"
|
|
" (lambda (pi) (set! counter (+ counter pi)))"
|
|
" 1000000)",
|
|
-1,
|
|
NULL);
|
|
sexp_eval_string(ctx, "(begin (write (round counter)) (newline))", -1, NULL);
|
|
|
|
sexp_destroy_context(ctx);
|
|
|
|
return 0;
|
|
}
|