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VM: CELL_TO_FOO macro-magic in the same spirit as BIGNUM_TO_FOO 

Now also factor_vm::to_cell doesn't piggyback on
factor_vm::to_fixnum's (strict) conversion.
db4
Björn Lindqvist 2014-06-07 17:04:27 +02:00
parent c3f9c0a9a3
commit d225bec128
1 changed files with 20 additions and 54 deletions
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74
vm/math.cpp
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@ -277,28 +277,28 @@ void factor_vm::primitive_bits_double() {
ctx->push(allot_float(bits_double(to_unsigned_8(ctx->pop()))));
}
/* Cannot allocate */
fixnum factor_vm::to_fixnum(cell tagged) {
switch (TAG(tagged)) {
case FIXNUM_TYPE:
return untag_fixnum(tagged);
case BIGNUM_TYPE:
return bignum_to_fixnum_strict(untag<bignum>(tagged));
default:
type_error(FIXNUM_TYPE, tagged);
return 0; /* can't happen */
/* Cannot allocate. */
#define CELL_TO_FOO(name, type, converter) \
type factor_vm::name(cell tagged) { \
switch (TAG(tagged)) { \
case FIXNUM_TYPE: \
return (type)untag_fixnum(tagged); \
case BIGNUM_TYPE: \
return converter(untag<bignum>(tagged)); \
default: \
type_error(FIXNUM_TYPE, tagged); \
return 0; /* can't happen */ \
} \
} \
VM_C_API type name(cell tagged, factor_vm* parent) { \
return parent->name(tagged); \
}
}
VM_C_API fixnum to_fixnum(cell tagged, factor_vm* parent) {
return parent->to_fixnum(tagged);
}
cell factor_vm::to_cell(cell tagged) { return (cell)to_fixnum(tagged); }
VM_C_API cell to_cell(cell tagged, factor_vm* parent) {
return parent->to_cell(tagged);
}
/* Note that to_fixnum, unlike the others, is strict. */
CELL_TO_FOO(to_fixnum, fixnum, bignum_to_fixnum_strict)
CELL_TO_FOO(to_cell, cell, bignum_to_cell)
CELL_TO_FOO(to_signed_8, int64_t, bignum_to_long_long)
CELL_TO_FOO(to_unsigned_8, uint64_t, bignum_to_ulong_long)
/* Allocates memory */
VM_C_API cell from_signed_cell(fixnum integer, factor_vm* parent) {
@ -322,23 +322,6 @@ VM_C_API cell from_signed_8(int64_t n, factor_vm* parent) {
return parent->from_signed_8(n);
}
/* Cannot allocate */
int64_t factor_vm::to_signed_8(cell obj) {
switch (tagged<object>(obj).type()) {
case FIXNUM_TYPE:
return untag_fixnum(obj);
case BIGNUM_TYPE:
return bignum_to_long_long(untag<bignum>(obj));
default:
type_error(BIGNUM_TYPE, obj);
return 0;
}
}
VM_C_API int64_t to_signed_8(cell obj, factor_vm* parent) {
return parent->to_signed_8(obj);
}
/* Allocates memory */
cell factor_vm::from_unsigned_8(uint64_t n) {
if (n > (uint64_t)fixnum_max)
@ -351,23 +334,6 @@ VM_C_API cell from_unsigned_8(uint64_t n, factor_vm* parent) {
return parent->from_unsigned_8(n);
}
/* Cannot allocate */
uint64_t factor_vm::to_unsigned_8(cell obj) {
switch (tagged<object>(obj).type()) {
case FIXNUM_TYPE:
return untag_fixnum(obj);
case BIGNUM_TYPE:
return bignum_to_ulong_long(untag<bignum>(obj));
default:
type_error(BIGNUM_TYPE, obj);
return 0;
}
}
VM_C_API uint64_t to_unsigned_8(cell obj, factor_vm* parent) {
return parent->to_unsigned_8(obj);
}
/* Cannot allocate */
float factor_vm::to_float(cell value) {
return (float)untag_float_check(value);