2 * NEC LE-IT: For 64-bit OS we extend the double type to hold two int64's
4 * x86-64: __m128 serves as placeholder which also requires the compiler
5 * to align it on 16 byte boundary (as required by cmpxchg16).
6 * Similar things could be done for PowerPC 64-bit using a VMX data type...
9 #if (defined(__x86_64__) && __GNUC__ >= 4) || defined(_WIN64)
10 # include <xmmintrin.h>
11 typedef __m128 double_ptr_storage;
12 #elif defined(_WIN32) && !defined(__GNUC__)
13 typedef unsigned __int64 double_ptr_storage;
15 typedef unsigned long long double_ptr_storage;
18 # define AO_HAVE_DOUBLE_PTR_STORAGE
21 double_ptr_storage AO_whole;
22 struct {AO_t AO_v1; AO_t AO_v2;} AO_parts;
25 #define AO_HAVE_double_t
26 #define AO_val1 AO_parts.AO_v1
27 #define AO_val2 AO_parts.AO_v2