Fresh start

1 files changed, 87 insertions, 0 deletions

diff --git a/jni/ruby/ext/-test-/bignum/intpack.c b/jni/ruby/ext/-test-/bignum/intpack.c
new file mode 100644
index 0000000..2d19442
--- /dev/null
+++ b/jni/ruby/ext/-test-/bignum/intpack.c
@@ -0,0 +1,87 @@
+#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));
+}
+
+static VALUE
+rb_integer_test_numbits_2comp_without_sign(VALUE val)
+{
+  size_t size;
+  int neg = FIXNUM_P(val) ? FIX2LONG(val) < 0 : BIGNUM_NEGATIVE_P(val);
+  size = rb_absint_numwords(val, 1, NULL) - (neg && rb_absint_singlebit_p(val));
+  return SIZET2NUM(size);
+}
+
+static VALUE
+rb_integer_test_numbytes_2comp_with_sign(VALUE val)
+{
+  int neg = FIXNUM_P(val) ? FIX2LONG(val) < 0 : BIGNUM_NEGATIVE_P(val);
+  int nlz_bits;
+  size_t size = rb_absint_size(val, &nlz_bits);
+  if (nlz_bits == 0 && !(neg && rb_absint_singlebit_p(val)))
+    size++;
+  return SIZET2NUM(size);
+}
+
+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));
+
+    rb_define_method(rb_cInteger, "test_numbits_2comp_without_sign", rb_integer_test_numbits_2comp_without_sign, 0);
+    rb_define_method(rb_cInteger, "test_numbytes_2comp_with_sign", rb_integer_test_numbytes_2comp_with_sign, 0);
+}