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libdclang.c
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/* dclang, an RPN programming language.
'True refinement seeks simplicity.' - Bruce Lee
Born on 2018-05-05 */
#include "dclang.h"
#include "token.c"
// BEGIN HELPERS
// Input pointer handling
void setinput(FILE *fp) {
file_stack[fsp++] = ifp;
ifp = fp;
}
void revertinput() {
if (fsp == 0) {
exit(0);
}
ifp = file_stack[--fsp];
}
////////////////////////////
// Dealing with importing //
////////////////////////////
DCLANG_LONG dclang_import(char *infilestr) {
DCLANG_INT saved_live_repl = live_repl;
live_repl = 0;
char *prefix = getenv("DCLANG_LIBS");
if (prefix == NULL) {
printf("DCLANG_LIBS env variable is unset!\n");
return -1;
}
// check existence of file:
if (access(infilestr, F_OK) == 0) {
FILE *infile;
infile = fopen(infilestr, "r");
setinput(infile);
repl();
live_repl = saved_live_repl;
return 0;
}
char *full_path = dclang_malloc(512);
memset(full_path, 0, 512);
char *slash = "/";
strcat(full_path, prefix);
strcat(full_path, slash);
strcat(full_path, infilestr);
if (access(full_path, F_OK) == 0) {
FILE *infile = fopen(full_path, "r");
setinput(infile);
repl();
live_repl = saved_live_repl;
return 0;
}
printf(
"The file named %s doesn't appear to exist in the current " \
"directory, or under %s as %s, or cannot be accessed.\n"
"You may want to check its existence and permissions!\n",
infilestr, prefix, full_path
);
return -1;
}
DCLANG_FLT dclang_pop() {
// special case -- has a return value b/c it can
// be used in other calls to give a value, which
// also means it can be an API call.
return data_stack[--data_stack_ptr];
}
// helper functions for sorting
int compare_doubles (const void *a, const void *b) {
const double *da = (const double *) a;
const double *db = (const double *) b;
return (*da > *db) - (*da < *db);
}
int compare_strings (const void *a, const void *b) {
const char *sa = (const char *) (DCLANG_PTR) * (DCLANG_FLT *) a;
const char *sb = (const char *) (DCLANG_PTR) * (DCLANG_FLT *) b;
return strcmp(sa, sb);
}
// end helper functions for sorting
// helper functions for trees
struct tree_entry *
make_tree_entry(char *key, DCLANG_FLT value) {
struct tree_entry *new_tree =
(struct tree_entry *) dclang_malloc(sizeof(struct tree_entry));
if(!new_tree) {
printf("make_tree_entry malloc fail\n");
exit(1);
}
new_tree->key = dclang_strdup(key);
new_tree->value = value;
return new_tree;
}
int tree_compare_func(const void *l, const void *r) {
if (l == NULL || r == NULL) return 0;
struct tree_entry *tree_l = (struct tree_entry *)l;
struct tree_entry *tree_r = (struct tree_entry *)r;
return strcmp(tree_l->key, tree_r->key);
}
// helper used by `treewalk`
void print_node(const void *node, const VISIT order, const int depth) {
if (order == preorder || order == leaf ) {
printf(
"key=%s, value=%s\n",
(*(struct tree_entry **)node)->key,
(char *)(DCLANG_PTR)((*(struct tree_entry **)node)->value)
);
}
}
// end helper functions for trees
///////////////////////////////////////////
// Helpers for local variable processing //
///////////////////////////////////////////
// Function to swap two cells
void swap(DCLANG_PTR *a, DCLANG_PTR *b) {
DCLANG_PTR temp = *a;
*a = *b;
*b = temp;
}
// function to reverse an array
void reverse_array(DCLANG_PTR arr[], int n) {
// Initialize left to the beginning and right to the end
int left = 0, right = n;
// Iterate till left is less than right
while (left < right) {
// Swap the elements at left and right position
swap(&arr[left], &arr[right]);
// Increment the left pointer
left++;
// Decrement the right pointer
right--;
}
}
// end locals helpers
// sqlite3 API helper
static int __sqlcallback(void *NotUsed, int argc, char **argv, char **azColName) {
int i;
for(i=0; i<argc; i++){
printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
}
printf("\n");
return 0;
}
// END HELPERS
void dclang_execute() {
char *char_ptr, *env_key, *env_val, *key, *search_key, *str, *str1, *str2, *buf, *mode, *path, *host, *sql;
regex_t *regex;
struct tree_entry *te, *te_del, *retval;
struct Node *list, *next, *node_to_remove, *tail_node, *node, *new_node, *node_before;
struct hostent *server;
sqlite3 *db;
sqlite3_stmt *stmt;
void *hvalue, *confirm;
FILE *file;
DCLANG_INT arrsize, precision, width, bufsize, i, ch, regex_flags, fd, sockfd, portno, rc;
DCLANG_FLT value, val, val1, val2, a, b, c, tree_val;
DCLANG_LONG slot, truth, result, midi_status, midi_data1, midi_data2;
DCLANG_PTR arrstart, env_key_addr, key_addr, idx, next_var, size, tree_idx, \
list_ptr, str_ptr_addr, str_ptr_addr2, dest, delim, buflen, strpt, bufaddr, num_bytes;
DCLANG_ULONG shift_amt, base, fmt;
static void *dispatch_table[] = {
&&OP_NOOP,
&&OP_PUSH,
&&OP_PUSH_NO_CHECK,
&&OP_DROP,
&&OP_DUP,
&&OP_OVER,
&&OP_PICK,
&&OP_SWAP,
&&OP_DROP2,
&&OP_DUP2,
&&OP_OVER2,
&&OP_DEPTH,
&&OP_CLEAR,
&&OP_SVPUSH,
&&OP_SVPOP,
&&OP_SVDROP,
&&OP_SVPICK,
&&OP_SVDEPTH,
&&OP_SVCLEAR,
&&OP_SHOW,
&&OP_SHOWNOSPACE,
&&OP_SHOWRJ,
&&OP_SHOWPZ,
&&OP_SHOWSTACK,
&&OP_NULL,
&&OP_FALSE,
&&OP_TRUE,
&&OP_EQ,
&&OP_NOTEQ,
&&OP_LT,
&&OP_GT,
&&OP_LTE,
&&OP_GTE,
&&OP_ASSERT,
&&OP_AND,
&&OP_OR,
&&OP_XOR,
&&OP_NOT,
&&OP_LSHIFT,
&&OP_RSHIFT,
&&OP_ADD,
&&OP_SUB,
&&OP_MUL,
&&OP_DIV,
&&OP_MOD,
&&OP_ABS,
&&OP_MIN,
&&OP_MAX,
&&OP_ROUND,
&&OP_CEIL,
&&OP_FLOOR,
&&OP_POWER,
&&OP_SQRT,
&&OP_EXP,
&&OP_LOG,
&&OP_LOG2,
&&OP_LOG10,
&&OP_E,
&&OP_PI,
&&OP_SINE,
&&OP_COS,
&&OP_TAN,
&&OP_ASINE,
&&OP_ACOS,
&&OP_ATAN,
&&OP_ATAN2,
&&OP_SINH,
&&OP_COSH,
&&OP_TANH,
&&OP_RAND,
&&OP_VARIABLE,
&&OP_POKE,
&&OP_PEEK,
&&OP_ALLOT,
&&OP_CREATE,
&&OP_COMMA,
&&OP_HERE,
&&OP_CONSTANT,
&&OP_ENVSET,
&&OP_ENVGET,
&&OP_SORTNUMS,
&&OP_SORTSTRS,
&&OP_HASHSET,
&&OP_HASHGET,
&&OP_HASHKEYS,
&&OP_TREEMAKE,
&&OP_TREESET,
&&OP_TREEGET,
&&OP_TREEWALK,
&&OP_TREEDELETE,
#ifdef HAS_TREEDESTROY
&&OP_TREEDESTROY,
#endif
&&OP_LISTMAKE,
&&OP_LISTNEXT,
&&OP_LISTSET,
&&OP_LISTGET,
&&OP_LISTPUSH,
&&OP_LISTPOP,
&&OP_LISTINSERT,
&&OP_LISTREMOVE,
&&OP_LISTSIZE,
&&OP_LISTDELETE,
&&OP_TIMES,
&&OP_AGAIN,
&&OP_EXITTIMES,
&&OP_FOR,
&&OP_NEXT,
&&OP_EXITFOR,
&&OP_I,
&&OP_J,
&&OP_K,
&&OP_JUMPZ,
&&OP_JUMPU,
&&OP_IF,
&&OP_ELSE,
&&OP_ENDIF,
&&OP_CALL,
&&OP_SET_LOCAL,
&&OP_GET_LOCAL,
&&OP_RETURN,
&&OP_CLOCK,
&&OP_EPOCH,
&&OP_EPOCH_TO_DT,
&&OP_DT_TO_EPOCH,
&&OP_SLEEP,
&&OP_CR,
&&OP_PRINT,
&&OP_EMIT,
&&OP_UEMIT,
&&OP_BYTES32,
&&OP_ISALNUM,
&&OP_ISALPHA,
&&OP_ISCNTRL,
&&OP_ISDIGIT,
&&OP_ISGRAPH,
&&OP_ISLOWER,
&&OP_ISPRINT,
&&OP_ISPUNCT,
&&OP_ISSPACE,
&&OP_ISUPPER,
&&OP_ISXDIGIT,
&&OP_TOHEX,
&&OP_TOSTR,
&&OP_TONUM,
&&OP_ORD,
&&OP_TOLOWER,
&&OP_TOUPPER,
&&OP_STRLEN,
&&OP_STREQ,
&&OP_STRLT,
&&OP_STRGT,
&&OP_STRFIND,
&&OP_STRSPN,
&&OP_STRCSPN,
&&OP_STRTOK,
&&OP_MEMPCPY,
&&OP_MEMSET,
&&OP_MKBUF,
&&OP_FREE,
&&OP_MEMUSED,
&&OP_REGCOMP,
&&OP_REGEXEC,
&&OP_REGREAD,
&&OP_IMPORT,
&&OP_FILEOPEN,
&&OP_FILEMEMOPEN,
&&OP_FILEREAD,
&&OP_FILEREADLINE,
&&OP_FILEREADALL,
&&OP_FILESEEK,
&&OP_FILETELL,
&&OP_FILEWRITE,
&&OP_FILEFLUSH,
&&OP_FILECLOSE,
&&OP_REDIRECT,
&&OP_RESETOUT,
&&OP_FLUSHOUT,
&&OP_OPEN,
&&OP_READ,
&&OP_WRITE,
&&OP_CLOSE,
&&OP_TCPLISTEN,
&&OP_TCPACCEPT,
&&OP_TCPCONNECT,
&&OP_UDPRECV,
&&OP_UDPSEND,
&&OP_BLOCKSIGINT,
&&OP_UNBLOCKSIGINT,
&&OP_FORK,
&&OP_EXIT,
&&OP_SHOWPRIMITIVES,
&&OP_SHOWWORDS,
&&OP_SHOWCONSTS,
&&OP_SHOWVARS,
&&OP_EXEC,
&&OP_INPUT,
&&_OP_SQLITEOPEN,
&&_OP_SQLITEPREPARE,
&&_OP_SQLITESTEP,
&&_OP_SQLITECOLUMN,
&&_OP_SQLITEFINALIZE,
&&_OP_SQLITEEXEC,
&&_OP_SQLITECLOSE,
&&_OP_PM_LIST,
&&_OP_PM_OPENOUT,
&&_OP_PM_WS,
&&_OP_PM_WSR,
&&_OP_PM_CLOSE,
&&_OP_PM_TERMINATE
};
while (1) {
goto *dispatch_table[prog[iptr].opcode];
OP_NOOP:
return;
// stack ops
OP_PUSH:
if (data_stack_ptr >= DATA_STACK_SIZE) {
printf("push -- stack overflow!\n");
data_stack_ptr = 0;
}
data_stack[data_stack_ptr++] = prog[iptr].param;
NEXT;
OP_PUSH_NO_CHECK:
data_stack[data_stack_ptr++] = prog[iptr].param;
NEXT;
OP_DROP:
if (data_stack_ptr < 1) {
printf("drop -- stack underflow!\n");
return;
}
--data_stack_ptr;
NEXT;
OP_DUP:
if (data_stack_ptr < 1) {
printf("dup -- stack underflow!\n");
return;
}
push(data_stack[data_stack_ptr - 1]);
NEXT;
OP_OVER:
if (data_stack_ptr < 2) {
printf("over -- stack underflow!\n");
return;
}
push(data_stack[data_stack_ptr - 2]);
NEXT;
OP_PICK:
if (data_stack_ptr < 1) {
printf("pick -- stack underflow!\n");
return;
}
DCLANG_PTR pick_idx = (DCLANG_PTR) POP;
if (data_stack_ptr < (pick_idx + 1)) {
printf("pick -- stack not deep enough!\n");
return;
}
val = data_stack[data_stack_ptr - (pick_idx + 1)];
data_stack[data_stack_ptr++] = val;
NEXT;
OP_SWAP:
if (data_stack_ptr < 2) {
printf("swap -- stack underflow!\n");
return;
}
val1 = data_stack[--data_stack_ptr];
val2 = data_stack[--data_stack_ptr];
data_stack[data_stack_ptr++] = val1;
data_stack[data_stack_ptr++] = val2;
NEXT;
OP_DROP2:
if (data_stack_ptr < 2) {
printf("2drop -- stack underflow!\n");
return;
}
--data_stack_ptr;
--data_stack_ptr;
NEXT;
OP_DUP2:
if (data_stack_ptr < 2) {
printf("2dup -- stack underflow!\n");
return;
}
val2 = data_stack[data_stack_ptr - 1];
push(data_stack[data_stack_ptr - 2]);
push(data_stack[data_stack_ptr - 2]);
NEXT;
OP_OVER2:
if (data_stack_ptr < 4) {
printf("2over -- stack underflow!\n");
return;
}
push(data_stack[data_stack_ptr - 4]);
push(data_stack[data_stack_ptr - 4]);
NEXT;
OP_DEPTH:
size = data_stack_ptr;
push((DCLANG_FLT)size);
NEXT;
OP_CLEAR:
// clears the stack!
data_stack_ptr = 0;
NEXT;
// save-stack ops
OP_SVPUSH:
if (save_data_stack_ptr >= DATA_STACK_SIZE) {
printf("svpush -- stack overflow!\n");
save_data_stack_ptr = 0;
}
val = POP;
data_stack[save_data_stack_ptr++ + DATA_STACK_SIZE] = val;
NEXT;
OP_SVPOP:
if (save_data_stack_ptr <= 0) {
printf("svdrop -- stack underflow!\n");
save_data_stack_ptr = 0;
return;
}
val = data_stack[--save_data_stack_ptr + DATA_STACK_SIZE];
data_stack[data_stack_ptr++] = val;
NEXT;
OP_SVDROP:
if (save_data_stack_ptr <= 0) {
printf("svdrop -- stack underflow!\n");
return;
}
--save_data_stack_ptr;
NEXT;
OP_SVPICK:
if (save_data_stack_ptr <= 0) {
printf("svpick -- stack underflow!\n");
return;
}
DCLANG_PTR svpick_idx = (DCLANG_PTR) POP;
if (save_data_stack_ptr < (svpick_idx + 1)) {
printf("svpick -- stack not deep enough!\n");
return;
}
val = data_stack[(save_data_stack_ptr - (svpick_idx + 1)) + DATA_STACK_SIZE];
data_stack[data_stack_ptr++] = val;
NEXT;
OP_SVDEPTH:
size = save_data_stack_ptr;
data_stack[data_stack_ptr++] = (DCLANG_FLT)size;
NEXT;
OP_SVCLEAR:
// clears the stack!
save_data_stack_ptr = 0;
NEXT;
// stack display primitives
OP_SHOW:
if (data_stack_ptr < 1) {
printf(". (pop) -- stack underflow! ");
return;
}
val = data_stack[--data_stack_ptr];
fprintf(ofp, "%0.19g ", val);
fflush(ofp);
NEXT;
OP_SHOWNOSPACE:
if (data_stack_ptr < 1) {
printf("stack underflow! ");
return;
}
val = data_stack[--data_stack_ptr];
fprintf(ofp, "%0.19g", val);
fflush(ofp);
NEXT;
OP_SHOWRJ:
if (data_stack_ptr < 3) {
printf("Stack underflow! '.rj' needs: value, width, precision on the stack\n");
return;
}
// right-justified for pretty printing!
precision = (DCLANG_LONG) POP;
width = (DCLANG_LONG) POP;
fprintf(ofp, "%*.*f ", width, precision, POP);
fflush(ofp);
NEXT;
OP_SHOWPZ:
// left pad with zeros
if (data_stack_ptr < 3) {
printf("Stack underflow! '.pz' needs: value, width, precision on the stack\n");
return;
}
precision = (DCLANG_LONG) POP;
width = (DCLANG_LONG) POP;
fprintf(ofp, "%0*.*f ", width, precision, POP);
fflush(ofp);
NEXT;
OP_SHOWSTACK:
DCLANG_LONG shx;
char *joiner;
shx = data_stack_ptr > 16 ? data_stack_ptr - 16 : 0;
joiner = shx == 0 ? " " : " ... ";
fprintf(ofp, "data_stack: <%lu>%s", data_stack_ptr, joiner);
fflush(ofp);
for (shx=0; shx < data_stack_ptr; shx++) {
fprintf(ofp, "%0.19g ", data_stack[shx]);
fflush(ofp);
}
fprintf(ofp, "\n");
// do the save data stack as well:
DCLANG_LONG shy;
char *sv_joiner;
shy = save_data_stack_ptr > 16 ? save_data_stack_ptr - 16 : 0;
sv_joiner = shy == 0 ? " " : " ... ";
fprintf(ofp, "save_stack: <%lu>%s", save_data_stack_ptr, sv_joiner);
fflush(ofp);
for (shy=0; shy < save_data_stack_ptr; shy++) {
fprintf(ofp, "%0.19g ", data_stack[shy + DATA_STACK_SIZE]);
fflush(ofp);
}
fprintf(ofp, "\n");
NEXT;
// true/false syntactic sugar
OP_NULL:
void *ptr = NULL;
push((DCLANG_LONG)ptr);
NEXT;
OP_FALSE:
push(0);
NEXT;
OP_TRUE:
push(-1);
NEXT;
// comparison booleans
OP_EQ:
if (data_stack_ptr < 2)
{
printf("= -- stack underflow; needs <val1> <val2> on the stack!\n");
return;
}
push(((DCLANG_FLT) POP == (DCLANG_FLT) POP) * -1);
NEXT;
OP_NOTEQ:
if (data_stack_ptr < 2)
{
printf("!= -- stack underflow; needs <val1> <val2> on the stack!\n");
return;
}
push(((DCLANG_FLT) POP != (DCLANG_FLT) POP) * -1);
NEXT;
OP_GT:
if (data_stack_ptr < 2)
{
printf("> -- stack underflow; needs <val1> <val2> on the stack!\n");
return;
}
push(((DCLANG_FLT) POP < (DCLANG_FLT) POP) * -1);
NEXT;
OP_LT:
if (data_stack_ptr < 2)
{
printf("< -- stack underflow; needs <val1> <val2> on the stack!\n");
return;
}
push(((DCLANG_FLT) POP > (DCLANG_FLT) POP) * -1);
NEXT;
OP_GTE:
if (data_stack_ptr < 2)
{
printf(">= -- stack underflow; needs <val1> <val2> on the stack!\n");
return;
}
push(((DCLANG_FLT) POP <= (DCLANG_FLT) POP) * -1);
NEXT;
OP_LTE:
if (data_stack_ptr < 2)
{
printf("<= -- stack underflow; needs <val1> <val2> on the stack!\n");
return;
}
push(((DCLANG_FLT) POP >= (DCLANG_FLT) POP) * -1);
NEXT;
// assertions
OP_ASSERT:
if (data_stack_ptr < 1)
{
printf("assert -- stack underflow; needs <bool> on the stack!\n");
return;
}
truth = POP;
if (truth == 0) {
printf("ASSERT FAIL!\n");
}
NEXT;
// bitwise operators
OP_AND:
if (data_stack_ptr < 2)
{
printf("and -- stack underflow; needs <int1> <int2> on the stack!\n");
return;
}
push((DCLANG_LONG) POP & (DCLANG_LONG) POP);
NEXT;
OP_OR:
if (data_stack_ptr < 2)
{
printf("or -- stack underflow; needs <int1> <int2> on the stack!\n");
return;
}
push((DCLANG_LONG) POP | (DCLANG_LONG) POP);
NEXT;
OP_XOR:
if (data_stack_ptr < 2)
{
printf("xor -- stack underflow; needs <int1> <int2> on the stack!\n");
return;
}
push((DCLANG_LONG) POP ^ (DCLANG_LONG) POP);
NEXT;
OP_NOT:
if (data_stack_ptr < 1)
{
printf("not -- stack underflow; needs <int> on the stack!\n");
return;
}
push(~(DCLANG_LONG) POP);
NEXT;
OP_LSHIFT:
if (data_stack_ptr < 2)
{
printf("<< -- stack underflow; needs <int1> <int2> on the stack!\n");
return;
}
shift_amt = (DCLANG_ULONG) POP;
base = (DCLANG_ULONG) POP;
push((DCLANG_ULONG) base << shift_amt);
NEXT;
OP_RSHIFT:
if (data_stack_ptr < 2)
{
printf(">> -- stack underflow; needs <int1> <int2> on the stack!\n");
return;
}
shift_amt = (DCLANG_ULONG) POP;
base = (DCLANG_ULONG) POP;
push((DCLANG_ULONG) base >> shift_amt);
NEXT;
// math
OP_ADD:
if (data_stack_ptr < 2)
{
printf("+ -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
push(POP + POP);
NEXT;
OP_SUB:
if (data_stack_ptr < 2)
{
printf("- -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
DCLANG_FLT subtrahend = POP;
push(POP - subtrahend);
NEXT;
OP_MUL:
if (data_stack_ptr < 2)
{
printf("* -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
push(POP * POP);
NEXT;
OP_DIV:
if (data_stack_ptr < 2)
{
printf("/ -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
DCLANG_FLT divisor = POP;
push(POP / divisor);
NEXT;
OP_MOD:
if (data_stack_ptr < 2)
{
printf("%% -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
DCLANG_FLT modulus = POP;
push(fmod(POP, modulus));
NEXT;
OP_ABS:
if (data_stack_ptr < 1)
{
printf("abs -- stack underflow; needs <num> on the stack!\n");
return;
}
push(fabs(POP));
NEXT;
OP_MIN:
if (data_stack_ptr < 2)
{
printf("min -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
a = POP;
b = POP;
c = (a < b) ? a : b;
push(c);
NEXT;
OP_MAX:
if (data_stack_ptr < 2)
{
printf("max -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
a = POP;
b = POP;
c = (a > b) ? a : b;
push(c);
NEXT;
OP_ROUND:
if (data_stack_ptr < 1)
{
printf("round needs a number on the stack!\n");
return;
}
push((DCLANG_LONG) round(POP));
NEXT;
OP_FLOOR:
if (data_stack_ptr < 1)
{
printf("floor needs a number on the stack!\n");
return;
}
push((DCLANG_LONG) floor(POP));
NEXT;
OP_CEIL:
if (data_stack_ptr < 1)
{
printf("ceil needs a number on the stack!\n");
return;
}
push((DCLANG_LONG) ceil(POP));
NEXT;
// scientific math words
OP_POWER:
if (data_stack_ptr < 2)
{
printf("pow -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
DCLANG_FLT raise = POP;
push(pow(POP, raise));
NEXT;
OP_SQRT:
if (data_stack_ptr < 1)
{
printf("sqrt needs a number on the stack!\n");
return;
}
push(sqrt(POP));
NEXT;
OP_EXP:
if (data_stack_ptr < 1)
{
printf("exp needs a number on the stack!\n");
return;
}
push(exp(POP));
NEXT;
OP_LOG:
if (data_stack_ptr < 1)
{
printf("log needs a number on the stack!\n");
return;
}
push(log(POP));
NEXT;
OP_LOG2:
if (data_stack_ptr < 1)
{
printf("log2 needs a number on the stack!\n");
return;
}
push(log2(POP));
NEXT;
OP_LOG10:
if (data_stack_ptr < 1)
{
printf("log10 needs a number on the stack!\n");
return;
}
push(log10(POP));
NEXT;
OP_E:
push(M_E);
NEXT;
// Trig, pi, etc.
OP_PI:
push(M_PI);
NEXT;
OP_SINE:
if (data_stack_ptr < 1)
{
printf("sin needs a number on the stack!\n");
return;
}
push(sin(POP));
NEXT;
OP_COS:
if (data_stack_ptr < 1)
{
printf("cos needs a number on the stack!\n");
return;
}
push(cos(POP));
NEXT;
OP_TAN:
if (data_stack_ptr < 1)
{
printf("tan needs a number on the stack!\n");
return;
}
push(tan(POP));
NEXT;
OP_ASINE:
if (data_stack_ptr < 1)
{
printf("asin needs a number on the stack!\n");
return;
}
push(asin(POP));
NEXT;
OP_ACOS:
if (data_stack_ptr < 1)
{
printf("acos needs a number on the stack!\n");
return;
}
push(acos(POP));
NEXT;
OP_ATAN:
if (data_stack_ptr < 1)
{
printf("atan needs a number on the stack!\n");
return;
}
push(atan(POP));
NEXT;
OP_ATAN2:
if (data_stack_ptr < 2)
{
printf("atan2 -- stack underflow; needs <num1> <num2> on the stack!\n");
return;
}
DCLANG_FLT x = POP;
DCLANG_FLT y = POP;
push(atan2(y, x));
NEXT;
OP_SINH:
if (data_stack_ptr < 1)
{
printf("sinh needs a number on the stack!\n");
return;
}
push(sinh(POP));
NEXT;
OP_COSH:
if (data_stack_ptr < 1)
{
printf("cosh needs a number on the stack!\n");
return;
}
push(cosh(POP));
NEXT;
OP_TANH:
if (data_stack_ptr < 1)
{
printf("tanh needs a number on the stack!\n");
return;
}
push(tanh(POP));
NEXT;
// randomness
OP_RAND:
push((double)rand()/(double)RAND_MAX);
NEXT;
// variables
OP_VARIABLE:
next_var = vars_idx++;
var_keys[var_map_idx] = get_token();
var_vals[var_map_idx++] = next_var;
NEXT;
OP_POKE:
if (data_stack_ptr < 2)
{
printf("! -- stack underflow; needs <val> <variable> on the stack! ");
return;
}
idx = (DCLANG_PTR) POP;
if (idx < 0 || idx > NUMVARS)
{
printf("! -- variable slot number out-of-range!\n");
return;
}
val = POP;
vars[idx] = val;
NEXT;
OP_PEEK:
if (data_stack_ptr < 1)
{
printf("@ -- stack underflow; needs <variable> on the stack! ");
return;
}
idx = (DCLANG_PTR) POP;
if (idx < 0 || idx > NUMVARS)
{
printf("@ -- variable slot number %lu is out-of-range!\n", idx);
return;
}
push(vars[idx]);
NEXT;