On 03/12/2013 09:09 PM, Joel Schopp wrote: > Implement an input visitor for ASN.1 BER encoding. > > Cc: Michael Tsirkin <m...@redhat.com> > Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com> > Signed-off-by: Joel Schopp <jsch...@linux.vnet.ibm.com> > --- > include/qapi/ber-input-visitor.h | 30 ++ > qapi/Makefile.objs | 2 +- > qapi/ber-input-visitor.c | 1073 > ++++++++++++++++++++++++++++++++++++++ > 3 files changed, 1104 insertions(+), 1 deletion(-) > create mode 100644 include/qapi/ber-input-visitor.h > create mode 100644 qapi/ber-input-visitor.c > > diff --git a/include/qapi/ber-input-visitor.h > b/include/qapi/ber-input-visitor.h > new file mode 100644 > index 0000000..eaa3d0e > --- /dev/null > +++ b/include/qapi/ber-input-visitor.h > @@ -0,0 +1,30 @@ > +/* > + * BER Input Visitor header > + * > + * Copyright IBM, Corp. 2011
It's 2013
> +static void ber_input_type_number(Visitor *v, double *obj, const char *name,
> + Error **errp)
> +{
> + BERInputVisitor *aiv = to_biv(v);
> + uint32_t ber_type_tag;
> + uint8_t ber_type_flags;
> + uint32_t len;
> + bool is_indefinite;
> + char buf[128], buf2[128];
> + GDoubleIEEE754 num;
> + struct ieee754_buffer number;
> + size_t to_read;
> +
> + switch (number.first) {
> + case 0x42:
> + *obj = nan("NAN");
> + break;
> + case 0x41:
> + case 0x40:
> + num.mpn.sign = ((number.first & 0x1) != 0);
> + num.mpn.biased_exponent = ~0;
> + num.mpn.mantissa_low = 0;
> + num.mpn.mantissa_high = 0;
> + *obj = num.v_double;
Is this really portable enough? In other words, do we really require
that qemu only compiles on platforms where double is in IEEE format?
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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