summaryrefslogtreecommitdiff
path: root/ext/-test-/bignum/intpack.c
diff options
context:
space:
mode:
Diffstat (limited to 'ext/-test-/bignum/intpack.c')
-rw-r--r--ext/-test-/bignum/intpack.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/ext/-test-/bignum/intpack.c b/ext/-test-/bignum/intpack.c
new file mode 100644
index 0000000..909294d
--- /dev/null
+++ b/ext/-test-/bignum/intpack.c
@@ -0,0 +1,65 @@
+#include "ruby.h"
+#include "internal.h"
+
+static VALUE
+rb_integer_pack_raw_m(VALUE val, VALUE buf, VALUE numwords_arg, VALUE wordsize_arg, VALUE nails, VALUE flags)
+{
+ int sign;
+ size_t numwords = 0;
+ size_t wordsize = NUM2SIZET(wordsize_arg);
+
+ StringValue(buf);
+ rb_str_modify(buf);
+ sign = rb_integer_pack(val,
+ RSTRING_PTR(buf), NUM2SIZET(numwords_arg),
+ NUM2SIZET(wordsize_arg), NUM2SIZET(nails), NUM2INT(flags));
+
+ return rb_ary_new_from_args(2, INT2NUM(sign), rb_str_new(RSTRING_PTR(buf), wordsize * numwords));
+}
+
+static VALUE
+rb_integer_pack_m(VALUE val, VALUE numwords_arg, VALUE wordsize_arg, VALUE nails, VALUE flags)
+{
+ int sign;
+ size_t numwords = NUM2SIZET(numwords_arg);
+ size_t wordsize = NUM2SIZET(wordsize_arg);
+ VALUE buf;
+
+ if (numwords != 0 && wordsize != 0 && LONG_MAX / wordsize < numwords)
+ rb_raise(rb_eArgError, "too big numwords * wordsize");
+ buf = rb_str_new(NULL, numwords * wordsize);
+ sign = rb_integer_pack(val,
+ RSTRING_PTR(buf), numwords,
+ wordsize, NUM2SIZET(nails), NUM2INT(flags));
+
+ return rb_assoc_new(INT2NUM(sign), buf);
+}
+
+static VALUE
+rb_integer_unpack_m(VALUE klass, VALUE buf, VALUE numwords, VALUE wordsize, VALUE nails, VALUE flags)
+{
+ StringValue(buf);
+
+ return rb_integer_unpack(RSTRING_PTR(buf),
+ NUM2SIZET(numwords), NUM2SIZET(wordsize),
+ NUM2SIZET(nails), NUM2INT(flags));
+}
+
+void
+Init_intpack(VALUE klass)
+{
+ rb_define_method(rb_cInteger, "test_pack_raw", rb_integer_pack_raw_m, 5);
+ rb_define_method(rb_cInteger, "test_pack", rb_integer_pack_m, 4);
+ rb_define_singleton_method(rb_cInteger, "test_unpack", rb_integer_unpack_m, 5);
+ rb_define_const(rb_cInteger, "INTEGER_PACK_MSWORD_FIRST", INT2NUM(INTEGER_PACK_MSWORD_FIRST));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_LSWORD_FIRST", INT2NUM(INTEGER_PACK_LSWORD_FIRST));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_MSBYTE_FIRST", INT2NUM(INTEGER_PACK_MSBYTE_FIRST));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_LSBYTE_FIRST", INT2NUM(INTEGER_PACK_LSBYTE_FIRST));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_NATIVE_BYTE_ORDER", INT2NUM(INTEGER_PACK_NATIVE_BYTE_ORDER));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_2COMP", INT2NUM(INTEGER_PACK_2COMP));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_LITTLE_ENDIAN", INT2NUM(INTEGER_PACK_LITTLE_ENDIAN));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_BIG_ENDIAN", INT2NUM(INTEGER_PACK_BIG_ENDIAN));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_FORCE_BIGNUM", INT2NUM(INTEGER_PACK_FORCE_BIGNUM));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_NEGATIVE", INT2NUM(INTEGER_PACK_NEGATIVE));
+ rb_define_const(rb_cInteger, "INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION", INT2NUM(INTEGER_PACK_FORCE_GENERIC_IMPLEMENTATION));
+}