namespace factor { static const fixnum fixnum_max = (((fixnum)1 << (WORD_SIZE - TAG_BITS - 1)) - 1); static const fixnum fixnum_min = (-((fixnum)1 << (WORD_SIZE - TAG_BITS - 1))); static const fixnum array_size_max = ((cell)1 << (WORD_SIZE - TAG_BITS - 2)); inline cell factor_vm::allot_integer(fixnum x) { if(x < fixnum_min || x > fixnum_max) return tag(fixnum_to_bignum(x)); else return tag_fixnum(x); } inline cell factor_vm::allot_cell(cell x) { if(x > (cell)fixnum_max) return tag(cell_to_bignum(x)); else return tag_fixnum(x); } inline cell factor_vm::allot_float(double n) { boxed_float *flo = allot(sizeof(boxed_float)); flo->n = n; return tag(flo); } inline bignum *factor_vm::float_to_bignum(cell tagged) { return double_to_bignum(untag_float(tagged)); } inline double factor_vm::bignum_to_float(cell tagged) { return bignum_to_double(untag(tagged)); } inline double factor_vm::untag_float(cell tagged) { return untag(tagged)->n; } inline double factor_vm::untag_float_check(cell tagged) { return untag_check(tagged)->n; } inline fixnum factor_vm::float_to_fixnum(cell tagged) { return (fixnum)untag_float(tagged); } inline double factor_vm::fixnum_to_float(cell tagged) { return (double)untag_fixnum(tagged); } inline cell factor_vm::unbox_array_size() { cell obj = dpeek(); if(TAG(obj) == FIXNUM_TYPE) { fixnum n = untag_fixnum(obj); if(n >= 0 && n < (fixnum)array_size_max) { dpop(); return n; } } return unbox_array_size_slow(); } VM_C_API void box_float(float flo, factor_vm *vm); VM_C_API float to_float(cell value, factor_vm *vm); VM_C_API void box_double(double flo, factor_vm *vm); VM_C_API double to_double(cell value, factor_vm *vm); VM_C_API void box_signed_1(s8 n, factor_vm *vm); VM_C_API void box_unsigned_1(u8 n, factor_vm *vm); VM_C_API void box_signed_2(s16 n, factor_vm *vm); VM_C_API void box_unsigned_2(u16 n, factor_vm *vm); VM_C_API void box_signed_4(s32 n, factor_vm *vm); VM_C_API void box_unsigned_4(u32 n, factor_vm *vm); VM_C_API void box_signed_cell(fixnum integer, factor_vm *vm); VM_C_API void box_unsigned_cell(cell cell, factor_vm *vm); VM_C_API void box_signed_8(s64 n, factor_vm *vm); VM_C_API void box_unsigned_8(u64 n, factor_vm *vm); VM_C_API s64 to_signed_8(cell obj, factor_vm *vm); VM_C_API u64 to_unsigned_8(cell obj, factor_vm *vm); VM_C_API fixnum to_fixnum(cell tagged, factor_vm *vm); VM_C_API cell to_cell(cell tagged, factor_vm *vm); VM_ASM_API void overflow_fixnum_add(fixnum x, fixnum y, factor_vm *vm); VM_ASM_API void overflow_fixnum_subtract(fixnum x, fixnum y, factor_vm *vm); VM_ASM_API void overflow_fixnum_multiply(fixnum x, fixnum y, factor_vm *vm); }