diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/-test-/bignum/pack.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ext/-test-/bignum/pack.c b/ext/-test-/bignum/pack.c index 62f8f62c2d..6d646368d4 100644 --- a/ext/-test-/bignum/pack.c +++ b/ext/-test-/bignum/pack.c @@ -19,6 +19,24 @@ rb_integer_pack_m(VALUE val, VALUE buf, VALUE wordsize_arg, VALUE nails, VALUE f } static VALUE +rb_integer_pack_2comp_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_2comp(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 sign, VALUE buf, VALUE wordcount, VALUE wordsize, VALUE nails, VALUE flags) { StringValue(buf); @@ -32,6 +50,7 @@ void Init_pack(VALUE klass) { rb_define_method(rb_cInteger, "test_pack", rb_integer_pack_m, 4); + rb_define_method(rb_cInteger, "test_pack_2comp", rb_integer_pack_2comp_m, 4); rb_define_singleton_method(rb_cInteger, "test_unpack", rb_integer_unpack_m, 6); 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)); |