diff -ur octave-4.1.0+.orig/liboctave/util/oct-inttypes.cc octave-4.1.0+/liboctave/util/oct-inttypes.cc --- octave-4.1.0+.orig/liboctave/util/oct-inttypes.cc 2016-06-17 14:01:56.000000000 -0400 +++ octave-4.1.0+/liboctave/util/oct-inttypes.cc 2016-06-17 19:52:03.943017663 -0400 @@ -105,7 +105,31 @@ #if defined (OCTAVE_ENSURE_LONG_DOUBLE_OPERATIONS_ARE_NOT_TRUNCATED) -#define DEFINE_OCTAVE_LONG_DOUBLE_CMP_OP_TEMPLATES(T) \ +typedef unsigned short fpucw_t; /* glibc calls this fpu_control_t */ + +# define FPU_PC_MASK 0x0300 +# define FPU_PC_DOUBLE 0x200 /* glibc calls this _FPU_DOUBLE */ +# define FPU_PC_EXTENDED 0x300 /* glibc calls this _FPU_EXTENDED */ + +# define GET_FPUCW() \ + ({ fpucw_t _cw; \ + __asm__ __volatile__ ("fnstcw %0" : "=m" (*&_cw)); \ + _cw; \ + }) +# define SET_FPUCW(word) \ + (void)({ fpucw_t _ncw = (word); \ + __asm__ __volatile__ ("fldcw %0" : : "m" (*&_ncw)); \ + }) + +# define DECL_LONG_DOUBLE_ROUNDING \ + fpucw_t oldcw; +# define BEGIN_LONG_DOUBLE_ROUNDING() \ + (void)(oldcw = GET_FPUCW (), \ + SET_FPUCW ((oldcw & ~FPU_PC_MASK) | FPU_PC_EXTENDED)) +# define END_LONG_DOUBLE_ROUNDING() \ + SET_FPUCW (oldcw) + +#define DEFINE_OCTAVE_LONG_DOUBLE_CMP_OP_TEMPLATES(T) \ template \ bool \ octave_int_cmp_op::external_mop (double x, T y) \