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VM: Refactor math.hpp/cpp to Factor style

db4
Erik Charlebois 2013-05-11 22:13:48 -04:00
parent 38802ce173
commit d9e225e1dc
2 changed files with 315 additions and 412 deletions
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416
vm/math.cpp
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@ -1,27 +1,23 @@
#include "master.hpp" #include "master.hpp"
namespace factor namespace factor {
{
void factor_vm::primitive_bignum_to_fixnum() void factor_vm::primitive_bignum_to_fixnum() {
{
ctx->replace(tag_fixnum(bignum_to_fixnum(untag<bignum>(ctx->peek())))); ctx->replace(tag_fixnum(bignum_to_fixnum(untag<bignum>(ctx->peek()))));
} }
void factor_vm::primitive_float_to_fixnum() void factor_vm::primitive_float_to_fixnum() {
{
ctx->replace(tag_fixnum(float_to_fixnum(ctx->peek()))); ctx->replace(tag_fixnum(float_to_fixnum(ctx->peek())));
} }
/* does not allocate, even though from_signed_cell can allocate */ /* does not allocate, even though from_signed_cell can allocate */
/* Division can only overflow when we are dividing the most negative fixnum /* Division can only overflow when we are dividing the most negative fixnum
by -1. */ by -1. */
void factor_vm::primitive_fixnum_divint() void factor_vm::primitive_fixnum_divint() {
{
fixnum y = untag_fixnum(ctx->pop()); fixnum y = untag_fixnum(ctx->pop());
fixnum x = untag_fixnum(ctx->peek()); fixnum x = untag_fixnum(ctx->peek());
fixnum result = x / y; fixnum result = x / y;
if(result == -fixnum_min) if (result == -fixnum_min)
/* Does not allocate */ /* Does not allocate */
ctx->replace(from_signed_cell(-fixnum_min)); ctx->replace(from_signed_cell(-fixnum_min));
else else
@ -29,20 +25,16 @@ void factor_vm::primitive_fixnum_divint()
} }
/* does not allocate, even though from_signed_cell can allocate */ /* does not allocate, even though from_signed_cell can allocate */
void factor_vm::primitive_fixnum_divmod() void factor_vm::primitive_fixnum_divmod() {
{ cell* s0 = (cell*)(ctx->datastack);
cell *s0 = (cell *)(ctx->datastack); cell* s1 = (cell*)(ctx->datastack - sizeof(cell));
cell *s1 = (cell *)(ctx->datastack - sizeof(cell));
fixnum y = untag_fixnum(*s0); fixnum y = untag_fixnum(*s0);
fixnum x = untag_fixnum(*s1); fixnum x = untag_fixnum(*s1);
if(y == -1 && x == fixnum_min) if (y == -1 && x == fixnum_min) {
{
/* Does not allocate */ /* Does not allocate */
*s1 = from_signed_cell(-fixnum_min); *s1 = from_signed_cell(-fixnum_min);
*s0 = tag_fixnum(0); *s0 = tag_fixnum(0);
} } else {
else
{
*s1 = tag_fixnum(x / y); *s1 = tag_fixnum(x / y);
*s0 = tag_fixnum(x % y); *s0 = tag_fixnum(x % y);
} }
@ -52,465 +44,387 @@ void factor_vm::primitive_fixnum_divmod()
* If we're shifting right by n bits, we won't overflow as long as none of the * If we're shifting right by n bits, we won't overflow as long as none of the
* high WORD_SIZE-TAG_BITS-n bits are set. * high WORD_SIZE-TAG_BITS-n bits are set.
*/ */
inline fixnum factor_vm::sign_mask(fixnum x) inline fixnum factor_vm::sign_mask(fixnum x) { return x >> (WORD_SIZE - 1); }
{
return x >> (WORD_SIZE - 1);
}
inline fixnum factor_vm::branchless_max(fixnum x, fixnum y) inline fixnum factor_vm::branchless_max(fixnum x, fixnum y) {
{
return (x - ((x - y) & sign_mask(x - y))); return (x - ((x - y) & sign_mask(x - y)));
} }
inline fixnum factor_vm::branchless_abs(fixnum x) inline fixnum factor_vm::branchless_abs(fixnum x) {
{
return (x ^ sign_mask(x)) - sign_mask(x); return (x ^ sign_mask(x)) - sign_mask(x);
} }
void factor_vm::primitive_fixnum_shift() void factor_vm::primitive_fixnum_shift() {
{
fixnum y = untag_fixnum(ctx->pop()); fixnum y = untag_fixnum(ctx->pop());
fixnum x = untag_fixnum(ctx->peek()); fixnum x = untag_fixnum(ctx->peek());
if(x == 0) if (x == 0)
return; return;
else if(y < 0) else if (y < 0) {
{ y = branchless_max(y, -WORD_SIZE + 1);
y = branchless_max(y,-WORD_SIZE + 1);
ctx->replace(tag_fixnum(x >> -y)); ctx->replace(tag_fixnum(x >> -y));
return; return;
} } else if (y < WORD_SIZE - TAG_BITS) {
else if(y < WORD_SIZE - TAG_BITS) fixnum mask = -((fixnum) 1 << (WORD_SIZE - 1 - TAG_BITS - y));
{ if (!(branchless_abs(x) & mask)) {
fixnum mask = -((fixnum)1 << (WORD_SIZE - 1 - TAG_BITS - y));
if(!(branchless_abs(x) & mask))
{
ctx->replace(tag_fixnum(x << y)); ctx->replace(tag_fixnum(x << y));
return; return;
} }
} }
ctx->replace(tag<bignum>(bignum_arithmetic_shift( ctx->replace(tag<bignum>(bignum_arithmetic_shift(fixnum_to_bignum(x), y)));
fixnum_to_bignum(x),y)));
} }
void factor_vm::primitive_fixnum_to_bignum() void factor_vm::primitive_fixnum_to_bignum() {
{
ctx->replace(tag<bignum>(fixnum_to_bignum(untag_fixnum(ctx->peek())))); ctx->replace(tag<bignum>(fixnum_to_bignum(untag_fixnum(ctx->peek()))));
} }
void factor_vm::primitive_float_to_bignum() void factor_vm::primitive_float_to_bignum() {
{
ctx->replace(tag<bignum>(float_to_bignum(ctx->peek()))); ctx->replace(tag<bignum>(float_to_bignum(ctx->peek())));
} }
#define POP_BIGNUMS(x,y) \ #define POP_BIGNUMS(x, y) \
bignum * y = untag<bignum>(ctx->pop()); \ bignum* y = untag<bignum>(ctx->pop()); \
bignum * x = untag<bignum>(ctx->peek()); bignum* x = untag<bignum>(ctx->peek());
void factor_vm::primitive_bignum_eq() void factor_vm::primitive_bignum_eq() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag_boolean(bignum_equal_p(x, y)));
ctx->replace(tag_boolean(bignum_equal_p(x,y)));
} }
void factor_vm::primitive_bignum_add() void factor_vm::primitive_bignum_add() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_add(x, y)));
ctx->replace(tag<bignum>(bignum_add(x,y)));
} }
void factor_vm::primitive_bignum_subtract() void factor_vm::primitive_bignum_subtract() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_subtract(x, y)));
ctx->replace(tag<bignum>(bignum_subtract(x,y)));
} }
void factor_vm::primitive_bignum_multiply() void factor_vm::primitive_bignum_multiply() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_multiply(x, y)));
ctx->replace(tag<bignum>(bignum_multiply(x,y)));
} }
void factor_vm::primitive_bignum_divint() void factor_vm::primitive_bignum_divint() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_quotient(x, y)));
ctx->replace(tag<bignum>(bignum_quotient(x,y)));
} }
void factor_vm::primitive_bignum_divmod() void factor_vm::primitive_bignum_divmod() {
{ cell* s0 = (cell*)(ctx->datastack);
cell *s0 = (cell *)(ctx->datastack); cell* s1 = (cell*)(ctx->datastack - sizeof(cell));
cell *s1 = (cell *)(ctx->datastack - sizeof(cell)); bignum* y = untag<bignum>(*s0);
bignum *y = untag<bignum>(*s0); bignum* x = untag<bignum>(*s1);
bignum *x = untag<bignum>(*s1); bignum* q, *r;
bignum *q, *r;
bignum_divide(x, y, &q, &r); bignum_divide(x, y, &q, &r);
*s1 = tag<bignum>(q); *s1 = tag<bignum>(q);
*s0 = tag<bignum>(r); *s0 = tag<bignum>(r);
} }
void factor_vm::primitive_bignum_mod() void factor_vm::primitive_bignum_mod() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_remainder(x, y)));
ctx->replace(tag<bignum>(bignum_remainder(x,y)));
} }
void factor_vm::primitive_bignum_gcd() void factor_vm::primitive_bignum_gcd() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_gcd(x, y)));
ctx->replace(tag<bignum>(bignum_gcd(x,y)));
} }
void factor_vm::primitive_bignum_and() void factor_vm::primitive_bignum_and() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_bitwise_and(x, y)));
ctx->replace(tag<bignum>(bignum_bitwise_and(x,y)));
} }
void factor_vm::primitive_bignum_or() void factor_vm::primitive_bignum_or() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_bitwise_ior(x, y)));
ctx->replace(tag<bignum>(bignum_bitwise_ior(x,y)));
} }
void factor_vm::primitive_bignum_xor() void factor_vm::primitive_bignum_xor() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag<bignum>(bignum_bitwise_xor(x, y)));
ctx->replace(tag<bignum>(bignum_bitwise_xor(x,y)));
} }
void factor_vm::primitive_bignum_shift() void factor_vm::primitive_bignum_shift() {
{
fixnum y = untag_fixnum(ctx->pop()); fixnum y = untag_fixnum(ctx->pop());
bignum* x = untag<bignum>(ctx->peek()); bignum* x = untag<bignum>(ctx->peek());
ctx->replace(tag<bignum>(bignum_arithmetic_shift(x,y))); ctx->replace(tag<bignum>(bignum_arithmetic_shift(x, y)));
} }
void factor_vm::primitive_bignum_less() void factor_vm::primitive_bignum_less() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag_boolean(bignum_compare(x, y) == bignum_comparison_less));
ctx->replace(tag_boolean(bignum_compare(x,y) == bignum_comparison_less));
} }
void factor_vm::primitive_bignum_lesseq() void factor_vm::primitive_bignum_lesseq() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag_boolean(bignum_compare(x, y) != bignum_comparison_greater));
ctx->replace(tag_boolean(bignum_compare(x,y) != bignum_comparison_greater));
} }
void factor_vm::primitive_bignum_greater() void factor_vm::primitive_bignum_greater() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag_boolean(bignum_compare(x, y) == bignum_comparison_greater));
ctx->replace(tag_boolean(bignum_compare(x,y) == bignum_comparison_greater));
} }
void factor_vm::primitive_bignum_greatereq() void factor_vm::primitive_bignum_greatereq() {
{ POP_BIGNUMS(x, y);
POP_BIGNUMS(x,y); ctx->replace(tag_boolean(bignum_compare(x, y) != bignum_comparison_less));
ctx->replace(tag_boolean(bignum_compare(x,y) != bignum_comparison_less));
} }
void factor_vm::primitive_bignum_not() void factor_vm::primitive_bignum_not() {
{
ctx->replace(tag<bignum>(bignum_bitwise_not(untag<bignum>(ctx->peek())))); ctx->replace(tag<bignum>(bignum_bitwise_not(untag<bignum>(ctx->peek()))));
} }
void factor_vm::primitive_bignum_bitp() void factor_vm::primitive_bignum_bitp() {
{ int bit = (int) to_fixnum(ctx->pop());
int bit = (int)to_fixnum(ctx->pop()); bignum* x = untag<bignum>(ctx->peek());
bignum *x = untag<bignum>(ctx->peek()); ctx->replace(tag_boolean(bignum_logbitp(bit, x)));
ctx->replace(tag_boolean(bignum_logbitp(bit,x)));
} }
void factor_vm::primitive_bignum_log2() void factor_vm::primitive_bignum_log2() {
{
ctx->replace(tag<bignum>(bignum_integer_length(untag<bignum>(ctx->peek())))); ctx->replace(tag<bignum>(bignum_integer_length(untag<bignum>(ctx->peek()))));
} }
/* Allocates memory */ /* Allocates memory */
cell factor_vm::unbox_array_size_slow() cell factor_vm::unbox_array_size_slow() {
{ if (tagged<object>(ctx->peek()).type() == BIGNUM_TYPE) {
if(tagged<object>(ctx->peek()).type() == BIGNUM_TYPE) bignum* zero = untag<bignum>(bignum_zero);
{
bignum *zero = untag<bignum>(bignum_zero);
GC_BIGNUM(zero); GC_BIGNUM(zero);
bignum *max = cell_to_bignum(array_size_max); bignum* max = cell_to_bignum(array_size_max);
bignum *n = untag<bignum>(ctx->peek()); bignum* n = untag<bignum>(ctx->peek());
if(bignum_compare(n,zero) != bignum_comparison_less if (bignum_compare(n, zero) != bignum_comparison_less &&
&& bignum_compare(n,max) == bignum_comparison_less) bignum_compare(n, max) == bignum_comparison_less) {
{
ctx->pop(); ctx->pop();
return bignum_to_cell(n); return bignum_to_cell(n);
} }
} }
general_error(ERROR_ARRAY_SIZE,ctx->pop(),tag_fixnum(array_size_max)); general_error(ERROR_ARRAY_SIZE, ctx->pop(), tag_fixnum(array_size_max));
return 0; /* can't happen */ return 0; /* can't happen */
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_fixnum_to_float() void factor_vm::primitive_fixnum_to_float() {
{
ctx->replace(allot_float(fixnum_to_float(ctx->peek()))); ctx->replace(allot_float(fixnum_to_float(ctx->peek())));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_format_float() void factor_vm::primitive_format_float() {
{ byte_array* array = allot_byte_array(100);
byte_array *array = allot_byte_array(100); char* format = alien_offset(ctx->pop());
char *format = alien_offset(ctx->pop());
double value = untag_float_check(ctx->peek()); double value = untag_float_check(ctx->peek());
SNPRINTF(array->data<char>(),99,format,value); SNPRINTF(array->data<char>(), 99, format, value);
ctx->replace(tag<byte_array>(array)); ctx->replace(tag<byte_array>(array));
} }
#define POP_FLOATS(x,y) \ #define POP_FLOATS(x, y) \
double y = untag_float(ctx->pop()); \ double y = untag_float(ctx->pop()); \
double x = untag_float(ctx->peek()); double x = untag_float(ctx->peek());
void factor_vm::primitive_float_eq() void factor_vm::primitive_float_eq() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(tag_boolean(x == y)); ctx->replace(tag_boolean(x == y));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_float_add() void factor_vm::primitive_float_add() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(allot_float(x + y)); ctx->replace(allot_float(x + y));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_float_subtract() void factor_vm::primitive_float_subtract() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(allot_float(x - y)); ctx->replace(allot_float(x - y));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_float_multiply() void factor_vm::primitive_float_multiply() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(allot_float(x * y)); ctx->replace(allot_float(x * y));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_float_divfloat() void factor_vm::primitive_float_divfloat() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(allot_float(x / y)); ctx->replace(allot_float(x / y));
} }
void factor_vm::primitive_float_less() void factor_vm::primitive_float_less() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(tag_boolean(x < y)); ctx->replace(tag_boolean(x < y));
} }
void factor_vm::primitive_float_lesseq() void factor_vm::primitive_float_lesseq() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(tag_boolean(x <= y)); ctx->replace(tag_boolean(x <= y));
} }
void factor_vm::primitive_float_greater() void factor_vm::primitive_float_greater() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(tag_boolean(x > y)); ctx->replace(tag_boolean(x > y));
} }
void factor_vm::primitive_float_greatereq() void factor_vm::primitive_float_greatereq() {
{ POP_FLOATS(x, y);
POP_FLOATS(x,y);
ctx->replace(tag_boolean(x >= y)); ctx->replace(tag_boolean(x >= y));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_float_bits() void factor_vm::primitive_float_bits() {
{ ctx->push(
ctx->push(from_unsigned_cell(float_bits((float)untag_float_check(ctx->pop())))); from_unsigned_cell(float_bits((float) untag_float_check(ctx->pop()))));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_bits_float() void factor_vm::primitive_bits_float() {
{ ctx->push(allot_float(bits_float((u32) to_cell(ctx->pop()))));
ctx->push(allot_float(bits_float((u32)to_cell(ctx->pop()))));
} }
void factor_vm::primitive_double_bits() void factor_vm::primitive_double_bits() {
{
ctx->push(from_unsigned_8(double_bits(untag_float_check(ctx->pop())))); ctx->push(from_unsigned_8(double_bits(untag_float_check(ctx->pop()))));
} }
/* Allocates memory */ /* Allocates memory */
void factor_vm::primitive_bits_double() void factor_vm::primitive_bits_double() {
{
ctx->push(allot_float(bits_double(to_unsigned_8(ctx->pop())))); ctx->push(allot_float(bits_double(to_unsigned_8(ctx->pop()))));
} }
/* Cannot allocate */ /* Cannot allocate */
fixnum factor_vm::to_fixnum(cell tagged) fixnum factor_vm::to_fixnum(cell tagged) {
{ switch (TAG(tagged)) {
switch(TAG(tagged))
{
case FIXNUM_TYPE: case FIXNUM_TYPE:
return untag_fixnum(tagged); return untag_fixnum(tagged);
case BIGNUM_TYPE: case BIGNUM_TYPE:
return bignum_to_fixnum(untag<bignum>(tagged)); return bignum_to_fixnum(untag<bignum>(tagged));
default: default:
type_error(FIXNUM_TYPE,tagged); type_error(FIXNUM_TYPE, tagged);
return 0; /* can't happen */ return 0; /* can't happen */
} }
} }
VM_C_API fixnum to_fixnum(cell tagged, factor_vm *parent) VM_C_API fixnum to_fixnum(cell tagged, factor_vm* parent) {
{
return parent->to_fixnum(tagged); return parent->to_fixnum(tagged);
} }
cell factor_vm::to_cell(cell tagged) cell factor_vm::to_cell(cell tagged) { return (cell) to_fixnum(tagged); }
{
return (cell)to_fixnum(tagged);
}
VM_C_API cell to_cell(cell tagged, factor_vm *parent) VM_C_API cell to_cell(cell tagged, factor_vm* parent) {
{
return parent->to_cell(tagged); return parent->to_cell(tagged);
} }
/* Allocates memory */ /* Allocates memory */
VM_C_API cell from_signed_cell(fixnum integer, factor_vm *parent) VM_C_API cell from_signed_cell(fixnum integer, factor_vm* parent) {
{
return parent->from_signed_cell(integer); return parent->from_signed_cell(integer);
} }
/* Allocates memory */ /* Allocates memory */
VM_C_API cell from_unsigned_cell(cell integer, factor_vm *parent) VM_C_API cell from_unsigned_cell(cell integer, factor_vm* parent) {
{
return parent->from_unsigned_cell(integer); return parent->from_unsigned_cell(integer);
} }
/* Allocates memory */ /* Allocates memory */
cell factor_vm::from_signed_8(s64 n) cell factor_vm::from_signed_8(s64 n) {
{ if (n < fixnum_min || n > fixnum_max)
if(n < fixnum_min || n > fixnum_max)
return tag<bignum>(long_long_to_bignum(n)); return tag<bignum>(long_long_to_bignum(n));
else else
return tag_fixnum((fixnum)n); return tag_fixnum((fixnum) n);
} }
VM_C_API cell from_signed_8(s64 n, factor_vm *parent) VM_C_API cell from_signed_8(s64 n, factor_vm* parent) {
{
return parent->from_signed_8(n); return parent->from_signed_8(n);
} }
/* Cannot allocate */ /* Cannot allocate */
s64 factor_vm::to_signed_8(cell obj) s64 factor_vm::to_signed_8(cell obj) {
{ switch (tagged<object>(obj).type()) {
switch(tagged<object>(obj).type())
{
case FIXNUM_TYPE: case FIXNUM_TYPE:
return untag_fixnum(obj); return untag_fixnum(obj);
case BIGNUM_TYPE: case BIGNUM_TYPE:
return bignum_to_long_long(untag<bignum>(obj)); return bignum_to_long_long(untag<bignum>(obj));
default: default:
type_error(BIGNUM_TYPE,obj); type_error(BIGNUM_TYPE, obj);
return 0; return 0;
} }
} }
VM_C_API s64 to_signed_8(cell obj, factor_vm *parent) VM_C_API s64 to_signed_8(cell obj, factor_vm* parent) {
{
return parent->to_signed_8(obj); return parent->to_signed_8(obj);
} }
/* Allocates memory */ /* Allocates memory */
cell factor_vm::from_unsigned_8(u64 n) cell factor_vm::from_unsigned_8(u64 n) {
{ if (n > (u64) fixnum_max)
if(n > (u64)fixnum_max)
return tag<bignum>(ulong_long_to_bignum(n)); return tag<bignum>(ulong_long_to_bignum(n));
else else
return tag_fixnum((fixnum)n); return tag_fixnum((fixnum) n);
} }
VM_C_API cell from_unsigned_8(u64 n, factor_vm *parent) VM_C_API cell from_unsigned_8(u64 n, factor_vm* parent) {
{
return parent->from_unsigned_8(n); return parent->from_unsigned_8(n);
} }
/* Cannot allocate */ /* Cannot allocate */
u64 factor_vm::to_unsigned_8(cell obj) u64 factor_vm::to_unsigned_8(cell obj) {
{ switch (tagged<object>(obj).type()) {
switch(tagged<object>(obj).type())
{
case FIXNUM_TYPE: case FIXNUM_TYPE:
return untag_fixnum(obj); return untag_fixnum(obj);
case BIGNUM_TYPE: case BIGNUM_TYPE:
return bignum_to_ulong_long(untag<bignum>(obj)); return bignum_to_ulong_long(untag<bignum>(obj));
default: default:
type_error(BIGNUM_TYPE,obj); type_error(BIGNUM_TYPE, obj);
return 0; return 0;
} }
} }
VM_C_API u64 to_unsigned_8(cell obj, factor_vm *parent) VM_C_API u64 to_unsigned_8(cell obj, factor_vm* parent) {
{
return parent->to_unsigned_8(obj); return parent->to_unsigned_8(obj);
} }
/* Cannot allocate */ /* Cannot allocate */
float factor_vm::to_float(cell value) float factor_vm::to_float(cell value) {
{ return (float) untag_float_check(value);
return (float)untag_float_check(value);
} }
/* Cannot allocate */ /* Cannot allocate */
double factor_vm::to_double(cell value) double factor_vm::to_double(cell value) { return untag_float_check(value); }
{
return untag_float_check(value);
}
/* The fixnum+, fixnum- and fixnum* primitives are defined in cpu_*.S. On /* The fixnum+, fixnum- and fixnum* primitives are defined in cpu_*.S. On
overflow, they call these functions. */ overflow, they call these functions. */
/* Allocates memory */ /* Allocates memory */
inline void factor_vm::overflow_fixnum_add(fixnum x, fixnum y) inline void factor_vm::overflow_fixnum_add(fixnum x, fixnum y) {
{ ctx->replace(
ctx->replace(tag<bignum>(fixnum_to_bignum( tag<bignum>(fixnum_to_bignum(untag_fixnum(x) + untag_fixnum(y))));
untag_fixnum(x) + untag_fixnum(y))));
} }
VM_C_API void overflow_fixnum_add(fixnum x, fixnum y, factor_vm *parent) VM_C_API void overflow_fixnum_add(fixnum x, fixnum y, factor_vm* parent) {
{ parent->overflow_fixnum_add(x, y);
parent->overflow_fixnum_add(x,y);
} }
/* Allocates memory */ /* Allocates memory */
inline void factor_vm::overflow_fixnum_subtract(fixnum x, fixnum y) inline void factor_vm::overflow_fixnum_subtract(fixnum x, fixnum y) {
{ ctx->replace(
ctx->replace(tag<bignum>(fixnum_to_bignum( tag<bignum>(fixnum_to_bignum(untag_fixnum(x) - untag_fixnum(y))));
untag_fixnum(x) - untag_fixnum(y))));
} }
VM_C_API void overflow_fixnum_subtract(fixnum x, fixnum y, factor_vm *parent) VM_C_API void overflow_fixnum_subtract(fixnum x, fixnum y, factor_vm* parent) {
{ parent->overflow_fixnum_subtract(x, y);
parent->overflow_fixnum_subtract(x,y);
} }
/* Allocates memory */ /* Allocates memory */
inline void factor_vm::overflow_fixnum_multiply(fixnum x, fixnum y) inline void factor_vm::overflow_fixnum_multiply(fixnum x, fixnum y) {
{ bignum* bx = fixnum_to_bignum(x);
bignum *bx = fixnum_to_bignum(x);
GC_BIGNUM(bx); GC_BIGNUM(bx);
bignum *by = fixnum_to_bignum(y); bignum* by = fixnum_to_bignum(y);
GC_BIGNUM(by); GC_BIGNUM(by);
ctx->replace(tag<bignum>(bignum_multiply(bx,by))); ctx->replace(tag<bignum>(bignum_multiply(bx, by)));
} }
VM_C_API void overflow_fixnum_multiply(fixnum x, fixnum y, factor_vm *parent) VM_C_API void overflow_fixnum_multiply(fixnum x, fixnum y, factor_vm* parent) {
{ parent->overflow_fixnum_multiply(x, y);
parent->overflow_fixnum_multiply(x,y);
} }
} }

75
vm/math.hpp
View File

@ -1,70 +1,59 @@
namespace factor namespace factor {
{
static const fixnum fixnum_max = (((fixnum)1 << (WORD_SIZE - TAG_BITS - 1)) - 1); static const fixnum fixnum_max =
static const fixnum fixnum_min = (-((fixnum)1 << (WORD_SIZE - TAG_BITS - 1))); (((fixnum) 1 << (WORD_SIZE - TAG_BITS - 1)) - 1);
static const fixnum array_size_max = ((cell)1 << (WORD_SIZE - TAG_BITS - 2)); 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));
/* Allocates memory */ /* Allocates memory */
inline cell factor_vm::from_signed_cell(fixnum x) inline cell factor_vm::from_signed_cell(fixnum x) {
{ if (x < fixnum_min || x > fixnum_max)
if(x < fixnum_min || x > fixnum_max)
return tag<bignum>(fixnum_to_bignum(x)); return tag<bignum>(fixnum_to_bignum(x));
else else
return tag_fixnum(x); return tag_fixnum(x);
} }
/* Allocates memory */ /* Allocates memory */
inline cell factor_vm::from_unsigned_cell(cell x) inline cell factor_vm::from_unsigned_cell(cell x) {
{ if (x > (cell) fixnum_max)
if(x > (cell)fixnum_max)
return tag<bignum>(cell_to_bignum(x)); return tag<bignum>(cell_to_bignum(x));
else else
return tag_fixnum(x); return tag_fixnum(x);
} }
/* Allocates memory */ /* Allocates memory */
inline cell factor_vm::allot_float(double n) inline cell factor_vm::allot_float(double n) {
{ boxed_float* flo = allot<boxed_float>(sizeof(boxed_float));
boxed_float *flo = allot<boxed_float>(sizeof(boxed_float));
flo->n = n; flo->n = n;
return tag(flo); return tag(flo);
} }
/* Allocates memory */ /* Allocates memory */
inline bignum *factor_vm::float_to_bignum(cell tagged) inline bignum* factor_vm::float_to_bignum(cell tagged) {
{
return double_to_bignum(untag_float(tagged)); return double_to_bignum(untag_float(tagged));
} }
inline double factor_vm::untag_float(cell tagged) inline double factor_vm::untag_float(cell tagged) {
{
return untag<boxed_float>(tagged)->n; return untag<boxed_float>(tagged)->n;
} }
inline double factor_vm::untag_float_check(cell tagged) inline double factor_vm::untag_float_check(cell tagged) {
{
return untag_check<boxed_float>(tagged)->n; return untag_check<boxed_float>(tagged)->n;
} }
inline fixnum factor_vm::float_to_fixnum(cell tagged) inline fixnum factor_vm::float_to_fixnum(cell tagged) {
{ return (fixnum) untag_float(tagged);
return (fixnum)untag_float(tagged);
} }
inline double factor_vm::fixnum_to_float(cell tagged) inline double factor_vm::fixnum_to_float(cell tagged) {
{ return (double) untag_fixnum(tagged);
return (double)untag_fixnum(tagged);
} }
inline cell factor_vm::unbox_array_size() inline cell factor_vm::unbox_array_size() {
{
cell obj = ctx->peek(); cell obj = ctx->peek();
if(TAG(obj) == FIXNUM_TYPE) if (TAG(obj) == FIXNUM_TYPE) {
{
fixnum n = untag_fixnum(obj); fixnum n = untag_fixnum(obj);
if(n >= 0 && n < (fixnum)array_size_max) if (n >= 0 && n < (fixnum) array_size_max) {
{
ctx->pop(); ctx->pop();
return n; return n;
} }
@ -73,19 +62,19 @@ inline cell factor_vm::unbox_array_size()
return unbox_array_size_slow(); return unbox_array_size_slow();
} }
VM_C_API cell from_signed_cell(fixnum integer, factor_vm *vm); VM_C_API cell from_signed_cell(fixnum integer, factor_vm* vm);
VM_C_API cell from_unsigned_cell(cell integer, factor_vm *vm); VM_C_API cell from_unsigned_cell(cell integer, factor_vm* vm);
VM_C_API cell from_signed_8(s64 n, factor_vm *vm); VM_C_API cell from_signed_8(s64 n, factor_vm* vm);
VM_C_API cell from_unsigned_8(u64 n, factor_vm *vm); VM_C_API cell from_unsigned_8(u64 n, factor_vm* vm);
VM_C_API s64 to_signed_8(cell obj, factor_vm *parent); VM_C_API s64 to_signed_8(cell obj, factor_vm* parent);
VM_C_API u64 to_unsigned_8(cell obj, factor_vm *parent); VM_C_API u64 to_unsigned_8(cell obj, factor_vm* parent);
VM_C_API fixnum to_fixnum(cell tagged, 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_C_API cell to_cell(cell tagged, factor_vm* vm);
VM_C_API void overflow_fixnum_add(fixnum x, fixnum y, factor_vm *parent); VM_C_API void overflow_fixnum_add(fixnum x, fixnum y, factor_vm* parent);
VM_C_API void overflow_fixnum_subtract(fixnum x, fixnum y, factor_vm *parent); VM_C_API void overflow_fixnum_subtract(fixnum x, fixnum y, factor_vm* parent);
VM_C_API void overflow_fixnum_multiply(fixnum x, fixnum y, factor_vm *parent); VM_C_API void overflow_fixnum_multiply(fixnum x, fixnum y, factor_vm* parent);
} }