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urbit/include/f/coal.h
C. Guy Yarvin f347b84db5 Adapt tiers 1 and 2 to new jets.
2014-08-19 17:49:16 -04:00

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/* include/coal.h
**
** This file is in the public domain.
*/
/** coal.h: common noun substrate.
***
*** Generally modeled on stage 223, but ideally isolated from it.
*** Currently depends for implementation on direct-linked jets.
***
*** Functions of the same name and tier may vary subtly from
*** kernel semantics. Be wary and read the header comment.
***
*** Most coal functions depend on u2_Wire, a thread-local global,
*** which addresses all memory and other thread state. This in
*** turn depends on u2_System.
**/
/** Globals.
**/
c3_global u2_ray u2_Wire; // __thread or equivalent
/** Aliases - selective and syntactically unique.
**/
# define u2h(som) u2_cx_h(som)
# define u2t(som) u2_cx_t(som)
# define u2at(axe, som) u2_cx_at(axe, som)
# define u2nc(a, b) u2_cn_cell(a, b)
# define u2nt(a, b, c) u2_cn_trel(a, b, c)
# define u2nq(a, b, c, d) u2_cn_qual(a, b, c, d)
# define u2fh(som) (*u2_at_pom_hed(som)) // no validity check
# define u2ft(som) (*u2_at_pom_tel(som)) // no validity check
# define u2du(som) (u2_cr_du(som))
# define u2ud(som) (u2_cr_ud(som))
# define u2k(som) u2_ct(som)
# define u2z(som) u2_cz(som)
/** u2_cx*: crash-only core traversal.
***
*** unless otherwise noted, u2_cx callers *retain* ownership of
*** all argument nouns and pointers, and *preserve* ownership of
*** all results.
***
*** u2_cx functions always bail with c3__exit.
**/
#if 1
# define u2_cx_h(som) u2_bi_h(u2_Wire, som)
# define u2_cx_t(som) u2_bi_t(u2_Wire, som)
# define u2_cx_at(axe, som) u2_bi_frag(u2_Wire, axe, som)
# define u2_cx_cell(a, b, c) u2_bi_cell(u2_Wire, a, b, c)
# define u2_cx_trel(a, b, c, d) u2_bi_trel(u2_Wire, a, b, c, d)
# define u2_cx_qual(a, b, c, d, e) u2_bi_qual(u2_Wire, a, b, c, d, e)
#else
/* u2_cx_h (u2h): head.
*/
u2_noun
u2_cx_h(u2_noun som);
/* u2_cx_t (u2t): tail.
*/
u2_noun
u2_cx_t(u2_noun som);
/* u2_cx_at (u2at): fragment.
*/
u2_noun
u2_cx_at(u2_noun axe, u2_noun som);
/* u2_cx_cell():
**
** Divide `a` as a cell `[b c]`.
*/
void
u2_cx_cell(u2_noun a,
u2_noun* b,
u2_noun* c);
/* u2_cx_trel():
**
** Divide `a` as a trel `[b c d]`, or bail.
*/
void
u2_cx_trel(u2_noun a,
u2_noun* b,
u2_noun* c,
u2_noun* d);
/* u2_cx_qual():
**
** Divide `a` as a quadruple `[b c d e]`.
*/
void
u2_cx_qual(u2_noun a,
u2_noun* b,
u2_noun* c,
u2_noun* d,
u2_noun* e);
#endif
/** u2_cr*: crash-free core traversal.
***
*** unless otherwise noted, u2_cr callers *retain* ownership of
*** all argument nouns and pointers, and *preserve* ownership of
*** all results.
**/
// XX: bound by cpp to the older, underlying loom layer.
//
#if 1
# define u2_cr_du(a) u2_dust(a)
# define u2_cr_ud(a) u2_stud(a)
# define u2_cr_at(a, b) u2_frag(a, b)
# define u2_cr_mean u2_mean
# define u2_cr_mug(a) u2_mug(a)
# define u2_cr_mug_string(a) u2_mug_string(a)
# define u2_cr_mug_words(a, b) u2_mug_words(a, b)
# define u2_cr_mug_cell(a, b) u2_mug_cell(a, b)
# define u2_cr_mug_trel(a, b, c) u2_mug_cell(a, b, c)
# define u2_cr_mug_qual(a, b, c, d) u2_mug_qual(a, b, c, d)
# define u2_cr_mug_both(a, b) u2_mug_both(a, b)
# define u2_cr_fing(a, b) u2_fing(a, b)
# define u2_cr_fing_c(a_c, b) u2_fing_c(a_c, b)
# define u2_cr_fing_cell(p, q, b) u2_fing_cell(p, q, b)
# define u2_cr_fing_mixt(p_c, q, b) u2_fing_mixt(p_c, q, b)
# define u2_cr_fing_trel(p, q, r, b) u2_fing_trel(p, q, r, b)
# define u2_cr_fing_qual(p, q, r, s, b) u2_fing_qual(p, q, r, s, b)
# define u2_cr_sing(a, b) u2_sing(a, b)
# define u2_cr_sing_c(a_c, b) u2_sing_c(a_c, b)
# define u2_cr_sing_cell(p, q, b) u2_sing_cell(p, q, b)
# define u2_cr_sing_mixt(p_c, q, b) u2_sing_mixt(p_c, q, b)
# define u2_cr_sing_trel(p, q, r, b) u2_sing_trel(p, q, r, b)
# define u2_cr_sing_qual(p, q, r, s, b) u2_sing_qual(p, q, r, s, b)
# define u2_cr_nord(a, b) u2_as_nord(a, b)
# define u2_cr_bush(a, b, c) u2_as_bush(a, b, c)
# define u2_cr_cell(a, b, c) u2_as_cell(a, b, c)
# define u2_cr_trel(a, b, c, d) u2_as_trel(a, b, c, d)
# define u2_cr_qual(a, b, c, d, e) u2_as_qual(a, b, c, d, e)
# define u2_cr_p(a, b, c) u2_as_p(a, b, c)
# define u2_cr_pq(a, b, c, d) u2_as_pq(a, b, c, d)
# define u2_cr_pqr(a, b, c, d, e) u2_as_pqr(a, b, c, d, e)
# define u2_cr_pqrs(a, b, c, d, e, f) u2_as_pqrs(a, b, c, d, e, f)
# define u2_cr_pqrs(a, b, c, d, e, f) u2_as_pqrs(a, b, c, d, e, f)
# define u2_cr_met(a_y, b) u2_met(a_y, b)
# define u2_cr_bit(a_w, b) u2_bit(a_w, b)
# define u2_cr_byte(a_w, b) u2_byte(a_w, b)
# define u2_cr_bytes(a_w, b_w, c_y, d) u2_bytes(a_w, b_w, c_y, d)
# define u2_cr_chop(m, f, w, t, d, s) u2_chop(m, f, w, t, d, s)
# define u2_cr_mp(a_mp, b) u2_mp(a_mp, b)
# define u2_cr_word(a_w, b) u2_word(a_w, b)
# define u2_cr_chub(a_w, b) u2_chub(a_w, b)
# define u2_cr_words(a_w, b_w, c_w, d) u2_words(a_w, b_w, c_w, d)
#else
/* u2_cr_du(): u2_yes iff `a` is cell.
*/
u2_bean
u2_cr_du(u2_noun a);
/* u2_cr_ud(): u2_no iff `a` is cell.
*/
u2_bean
u2_cr_ud(u2_noun a);
/* u2_cr_at(): fragment `a` of `b`, or none.
*/
u2_weak
u2_cr_at(u2_atom a,
u2_weak b);
/* u2_cr_mean():
**
** Attempt to deconstruct `a` by axis, noun pairs; 0 terminates.
** Axes must be sorted in tree order.
*/
u2_bean
u2_cr_mean(u2_noun a,
...);
/* u2_cr_mug():
**
** Compute and/or recall the mug (31-bit hash) of (a).
*/
c3_w
u2_cr_mug(u2_noun a);
/* u2_cr_mug_string():
**
** Compute the mug of `a`, LSB first.
*/
c3_w
u2_cr_mug_string(const c3_c *a_c);
/* u2_cr_mug_words():
**
** Compute the mug of `buf`, `len`, LSW first.
*/
c3_w
u2_cr_mug_words(const c3_w *buf_w,
c3_w len_w);
/* u2_cr_mug_cell():
**
** Compute the mug of `[a b]`.
*/
c3_w
u2_cr_mug_cell(u2_noun a,
u2_noun b);
/* u2_cr_mug_trel():
**
** Compute the mug of `[a b c]`.
*/
c3_w
u2_cr_mug_trel(u2_noun a,
u2_noun b,
u2_noun c);
/* u2_cr_mug_qual():
**
** Compute the mug of `[a b c d]`.
*/
c3_w
u2_cr_mug_qual(u2_noun a,
u2_noun b,
u2_noun c,
u2_noun d);
/* u2_cr_mug_both():
**
** Join two mugs.
*/
c3_w
u2_cr_mug_both(c3_w a_w,
c3_w b_w);
/* u2_cr_fing():
**
** Yes iff (a) and (b) are the same copy of the same noun.
** (Ie, by pointer equality - u2_cr_sing with false negatives.)
*/
u2_bean
u2_cr_fing(u2_noun a,
u2_noun b);
/* u2_cr_fing_c():
**
** Yes iff (b) is the same copy of the same noun as the C string [a].
*/
u2_bean
u2_cr_fing_c(const c3_c* a_c,
u2_noun b);
/* u2_cr_fing_cell():
**
** Yes iff `[p q]` and `b` are the same copy of the same noun.
*/
u2_bean
u2_cr_fing_cell(u2_noun p,
u2_noun q,
u2_noun b);
/* u2_cr_fing_mixt():
**
** Yes iff `[p q]` and `b` are the same copy of the same noun.
*/
u2_bean
u2_cr_fing_mixt(const c3_c* p_c,
u2_noun q,
u2_noun b);
/* u2_cr_fing_trel():
**
** Yes iff `[p q r]` and `b` are the same copy of the same noun.
*/
u2_bean
u2_cr_fing_trel(u2_noun p,
u2_noun q,
u2_noun r,
u2_noun b);
/* u2_cr_fing_qual():
**
** Yes iff `[p q r s]` and `b` are the same copy of the same noun.
*/
u2_bean
u2_cr_fing_qual(u2_noun p,
u2_noun q,
u2_noun r,
u2_noun s,
u2_noun b);
/* u2_cr_sing():
**
** Yes iff (a) and (b) are the same noun.
*/
u2_bean
u2_cr_sing(u2_noun a,
u2_noun b);
/* u2_cr_sing_c():
**
** Yes iff (b) is the same noun as the C string [a].
*/
u2_bean
u2_cr_sing_c(const c3_c* a_c,
u2_noun b);
/* u2_cr_sing_cell():
**
** Yes iff `[p q]` and `b` are the same noun.
*/
u2_bean
u2_cr_sing_cell(u2_noun p,
u2_noun q,
u2_noun b);
/* u2_cr_sing_mixt():
**
** Yes iff `[p q]` and `b` are the same noun.
*/
u2_bean
u2_cr_sing_mixt(const c3_c* p_c,
u2_noun q,
u2_noun b);
/* u2_cr_sing_trel():
**
** Yes iff `[p q r]` and `b` are the same noun.
*/
u2_bean
u2_cr_sing_trel(u2_noun p,
u2_noun q,
u2_noun r,
u2_noun b);
/* u2_cr_sing_qual():
**
** Yes iff `[p q r s]` and `b` are the same noun.
*/
u2_bean
u2_cr_sing_qual(u2_noun p,
u2_noun q,
u2_noun r,
u2_noun s,
u2_noun b);
/* u2_cr_nord():
**
** Return 0, 1 or 2 if `a` is below, equal to, or above `b`.
*/
u2_atom
u2_cr_nord(u2_noun a,
u2_noun b);
/* u2_cr_mold():
**
** Divide `a` as a mold `[b.[p q] c]`.
*/
u2_bean
u2_cr_mold(u2_noun a,
u2_noun* b,
u2_noun* c);
/* u2_cr_cell():
**
** Divide `a` as a cell `[b c]`.
*/
u2_bean
u2_cr_cell(u2_noun a,
u2_noun* b,
u2_noun* c);
/* u2_cr_trel():
**
** Divide `a` as a trel `[b c]`.
*/
u2_bean
u2_cr_trel(u2_noun a,
u2_noun* b,
u2_noun* c,
u2_noun* d);
/* u2_cr_qual():
**
** Divide (a) as a qual (b c d e).
*/
u2_bean
u2_cr_qual(u2_noun a,
u2_noun* b,
u2_noun* c,
u2_noun* d,
u2_noun* e);
/* u2_cr_p():
**
** & [0] if [a] is of the form [b *c].
*/
u2_bean
u2_cr_p(u2_noun a,
u2_noun b,
u2_noun* c);
/* u2_cr_pq():
**
** & [0] if [a] is of the form [b *c d].
*/
u2_bean
u2_cr_pq(u2_noun a,
u2_noun b,
u2_noun* c,
u2_noun* d);
/* u2_cr_pqr():
**
** & [0] if [a] is of the form [b *c *d *e].
*/
u2_bean
u2_cr_pqr(u2_noun a,
u2_noun b,
u2_noun* c,
u2_noun* d,
u2_noun* e);
/* u2_cr_pqrs():
**
** & [0] if [a] is of the form [b *c *d *e *f].
*/
u2_bean
u2_cr_pqrs(u2_noun a,
u2_noun b,
u2_noun* c,
u2_noun* d,
u2_noun* e,
u2_noun* f);
/* u2_cr_met():
**
** Return the size of (b) in bits, rounded up to
** (1 << a_y).
**
** For example, (a_y == 3) returns the size in bytes.
*/
c3_w
u2_cr_met(c3_y a_y,
u2_atom b);
/* u2_cr_bit():
**
** Return bit (a_w) of (b).
*/
c3_b
u2_cr_bit(c3_w a_w,
u2_atom b);
/* u2_cr_byte():
**
** Return byte (a_w) of (b).
*/
c3_y
u2_cr_byte(c3_w a_w,
u2_atom b);
/* u2_cr_bytes():
**
** Copy bytes (a_w) through (a_w + b_w - 1) from (d) to (c).
*/
void
u2_cr_bytes(c3_w a_w,
c3_w b_w,
c3_y* c_y,
u2_atom d);
/* u2_cr_chop():
**
** Into the bloq space of `met`, from position `fum` for a
** span of `wid`, to position `tou`, XOR from atom `src`
** into ray `dst`.
*/
void
u2_cr_chop(c3_g met_g,
c3_w fum_w,
c3_w wid_w,
c3_w tou_w,
u2_ray dst_r,
u2_atom src);
/* u2_cr_mp():
**
** Copy (b) into (a_mp).
*/
void
u2_cr_mp(mpz_t a_mp,
u2_atom b);
/* u2_cr_word():
**
** Return word (a_w) of (b).
*/
c3_w
u2_cr_word(c3_w a_w,
u2_atom b);
/* u2_cr_words():
**
** Copy words (a_w) through (a_w + b_w - 1) from (d) to (c).
*/
void
u2_cr_words(c3_w a_w,
c3_w b_w,
c3_w* c_w,
u2_atom d);
#endif
/* u2_cr_string(): `a`, a text atom, as malloced C string.
*/
c3_c*
u2_cr_string(u2_atom a);
/* u2_cr_tape(): `a`, a list of bytes, as malloced C string.
*/
c3_y*
u2_cr_tape(u2_noun a);
/** u2_c?: managing noun reference counts.
**/
#if 1
# define u2_ct(som) u2_rx(u2_Wire, som)
# define u2_cz(som) u2_rz(u2_Wire, som)
# define u2_co(som) u2_rl_senior(u2_Wire)
# define u2_cy(som) u2_rl_junior(u2_Wire)
#else
/* u2_cz(): release noun. Return `som` for convenience.
*/
u2_noun
u2_cz(u2_noun som);
/* u2_ct(): acquire noun. Return `som` for convenience.
*/
u2_noun
u2_ct(u2_noun som);
#endif
/* u2_cu(): yes iff `som` is mutable where transferred (refcount 1).
*/
u2_bean
u2_cu(u2_noun som);
/** u2_ci*, u2_cf*: importing and constructing nouns.
***
*** Unless otherwise noted, u2_ci/f callers *transfer* ownership of
*** all argument nouns, and *retain* ownership of argument pointers.
*** Callers *produce* a new result which the caller must release.
**/
/* u2_ci_mp(): construct atom from GMP. Caller transfers a_mp.
*/
u2_atom
u2_ci_mp(mpz_t a_mp);
/* u2_ci_bytes():
**
** Construct `a` bytes from `b`, LSB first, as an atom.
*/
u2_atom
u2_ci_bytes(c3_w a_w,
const c3_y* b_y);
/* u2_ci_words():
**
** Construct `a` words from `b`, LSW first, as an atom.
*/
u2_atom
u2_ci_words(c3_w a_w,
const c3_w* b_w);
/* u2_ci_chubs():
**
** Construct `a` double-words from `b`, LSD first, as an atom.
*/
u2_atom
u2_ci_chubs(c3_w a_w,
const c3_d* b_d);
/* u2_ci_string():
**
** u2_ci_bytes(strlen(a_c), (c3_y *)a_c);
*/
u2_atom
u2_ci_string(const c3_c* a_c);
/* u2_ci_tape(): from a C string, to a list of bytes.
*/
u2_atom
u2_ci_tape(const c3_c* txt_c);
/* u2_ci_duck():
**
** Create an atomic string from a list of bytes.
*/
u2_noun
u2_ci_duck(u2_noun a);
/* u2_ci_decimal():
**
** Parse `a` as a list of decimal digits.
*/
u2_atom
u2_ci_decimal(u2_noun a);
/* u2_ci_heximal():
**
** Parse `a` as a list of hex digits.
*/
u2_noun
u2_ci_heximal(u2_noun a);
/* u2_ci_list():
**
** Generate a null-terminated list, with `u2_none` as terminator.
*/
u2_noun
u2_ci_list(u2_weak one, ...);
/** u2_cn_*: natural constructors.
***
*** All argument nouns are transferred.
**/
/* u2_cn_inc(): increment an atom.
*/
u2_atom
u2_cn_inc(u2_atom a);
/* u2_cn_dec(): decrement an atom.
*/
u2_atom
u2_cn_dec(u2_atom a);
/* u2_cn_cell(): produce the cell `[a b]`.
*/
u2_noun
u2_cn_cell(u2_noun a,
u2_noun b);
/* u2_cn_trel():
*/
u2_noun
u2_cn_trel(u2_noun a,
u2_noun b,
u2_noun c);
/* u2_cn_qual():
*/
u2_noun
u2_cn_qual(u2_noun a,
u2_noun b,
u2_noun c,
u2_noun d);
/* u2_cn_nock():
**
** Nock or bail.
*/
u2_noun
u2_cn_nock(u2_noun bus,
u2_noun fol);
/* u2_cn_mung():
**
** Call `(function sample)`.
*/
u2_noun
u2_cn_mung(u2_noun fun,
u2_noun sam);
/* u2_cn_mink(): logical virtual nock.
*/
u2_noun
u2_cn_mink(u2_noun bus,
u2_noun fol,
u2_noun fly);
/* u2_cn_moch(): blind mink with empty fly.
*/
u2_noun
u2_cn_moch(u2_noun bus,
u2_noun fol);
/** u2_cm: meta, miscellaneous, management and magic.
**/
/* u2_cm_boot(): try to boot the system and set one wire (single thread).
**
** Return u2_no on failure.
*/
u2_bean
u2_cm_boot(void);
/* u2_cm_rind(): open and produce a new jump buffer.
*/
void*
u2_cm_rind();
/* u2_cm_trap(): trap for exceptions.
*/
# if 0
u2_noun
u2_cm_trap();
# else
// XX breaks for 64-bit nouns - use a tmp var
//
# define u2_cm_trap() (u2_noun)(setjmp(u2_cm_rind()))
# endif
/* u2_cm_done(): terminate trap.
*/
void
u2_cm_done();
/* u2_cm_wail(): retrieve and reset local trace.
*/
u2_noun
u2_cm_wail();
/* u2_cm_poll(): poll for interrupts, etc.
*/
void
u2_cm_poll();
/* u2_cm_trip(): descend into a memory region.
**
** Memory allocated in the heap above is senior & frozen.
*/
void
u2_cm_trip();
/* u2_cm_chin(): ascend out of a memory region.
**
** Memory allocated in the heap below is junior & volatile.
*/
void
u2_cm_chin();
/* u2_cm_keep(): copy volatile noun `som` to fresh heap.
*/
u2_noun
u2_cm_keep(u2_noun som);
/* u2_cm_bury(): store fresh or volatile noun `som` to freezer.
*/
u2_noun
u2_cm_bury(u2_noun som);
/* u2_cm_ruby(): store fresh or volatile noun `som` to freezer - debug.
*/
u2_noun
u2_cm_ruby(u2_noun som);
/* u2_cm_bail(): bail out to the local trap. Does not return.
**
** Bail structure:
**
** %exit
** %intr
** %fail
** [%fail p=*term]
** [%need p=*(list path)]
**
** c3__exit for normal exit
** c3__fail for abnormal failure
**
** When in doubt, fail.
*/
u2_noun
u2_cm_bail(c3_m how_m);
/* u2_cm_bowl(): bail out with preset report.
*/
u2_noun
u2_cm_bowl(u2_noun how); // transfer
/* u2_cm_pack(): elide all volatile memory.
*/
void
u2_cm_pack();
/* u2_cm_prof(): begin profiling.
*/
void
u2_cm_prof();
/* u2_cm_push(): push `mon` on trace stack.
*/
void
u2_cm_push(u2_noun mon);
/* u2_cm_bean(): push `[%bean roc]` on trace stack.
*/
void
u2_cm_bean(u2_noun roc);
/* u2_cm_foul():
*/
u2_noun
u2_cm_foul(const c3_c* err_c);
/* u2_cm_sweep(): return bytes leaked; match bytes saved.
*/
c3_w
u2_cm_sweep(c3_w sav_w);
/* u2_cm_purge(): purge memo cache.
*/
void
u2_cm_purge();
/* u2_cm_mark_noun(): mark individual noun.
*/
c3_w
u2_cm_mark_noun(u2_noun som);
/* u2_cm_mark_ptr(): mark a root for gc (do not use again before gc)
*/
c3_w
u2_cm_mark_ptr(void *ptr);
/* u2_cm_mark_internal(): mark all coal internals
*/
c3_w
u2_cm_mark_internal();
/* u2_cm_drop(): drop from meaning stack.
*/
void
u2_cm_drop();
/* u2_cm_frop(): extract, clear and disable profiler.
*/
u2_noun
u2_cm_frop();
/* u2_cm_slab():
**
** Create a blank atomic slab of `len` words.
*/
u2_ray
u2_cm_slab(c3_w len_w);
/* u2_cm_slaq():
**
** Create a blank atomic slab of `len` bloqs of size `met`.
*/
u2_ray
u2_cm_slaq(c3_g met_g,
c3_w len_w);
/* u2_cm_malt():
**
** Initialize slab `sal` as an atom, self-measured.
*/
u2_atom
u2_cm_malt(u2_ray sal_r);
/* u2_cm_mint():
**
** Initialize slab `sal` as an atom, auto-measured.
*/
u2_atom
u2_cm_mint(u2_ray sal_r,
c3_w len_w);
/* u2_cm_moot():
**
** Initialize slab `sal` as an atom, originally measured.
*/
u2_atom
u2_cm_moot(u2_ray sal_r);
/* u2_cm_open():
**
** Yes iff [a] more words remain in the pad.
*/
u2_bean
u2_cm_open(c3_w a_w);
/* u2_cm_malloc():
**
** Allocate `sib_w` *bytes* of raw C storage.
*/
void*
u2_cm_malloc(c3_w sib_w);
/* u2_cm_ralloc():
**
** Allocate `siz_w` words of raw ray storage.
*/
u2_ray
u2_cm_ralloc(c3_w siz_w);
/* u2_cm_rfree():
**
** Free raw ray storage allocated by `u2_cm_ralloc()`.
*/
void
u2_cm_rfree(u2_ray nov_r);
/* u2_cp: profiling and debugging.
**
** Profiling information is automatically cleared on each
*/
/* u2_cm_slab(): produce profiling record.
*/
u2_noun
u2_cm_slab();
/* u2_ck: kernel and related functions
**
** All nouns transferred unless otherwise stated.
*/
/* u2_cka: tier 1 functions
*/
u2_noun
u2_cka_add(u2_noun a, u2_noun b);
u2_noun
u2_cka_sub(u2_noun a, u2_noun b);
u2_noun
u2_cka_mul(u2_noun a, u2_noun b);
u2_noun
u2_cka_gth(u2_noun a, u2_noun b);
u2_bean
u2_cka_lte(u2_noun a, u2_noun b);
/* u2_ckb: tier 2 functions
*/
/* u2_ckb_lent(): length of a list.
*/
u2_noun
u2_ckb_lent(u2_noun a);
/* u2_ckb_weld(): concatenate list `a` before `b`.
*/
u2_noun
u2_ckb_weld(u2_noun a, u2_noun b);
/* u2_ckb_flop(): reverse list `a`.
*/
u2_noun
u2_ckb_flop(u2_noun a);
/* u2_ckc: tier 3 functions
*/
/* u2_ckc_lsh(): left shift.
*/
u2_noun
u2_ckc_lsh(u2_noun a, u2_noun b, u2_noun c);
/* u2_ckc_rsh(): right shift.
*/
u2_noun
u2_ckc_rsh(u2_noun a, u2_noun b, u2_noun c);
/* u2_ckd: tier 4 functions
*/
/* u2_ckd_by_get(): map get for key `b` in map `a` with u2_none.
*/
u2_weak
u2_ckd_by_get(u2_noun a, u2_noun b);
/* u2_ckd_by_got(): map get for key `b` in map `a` with fail.
*/
u2_noun
u2_ckd_by_got(u2_noun a, u2_noun b);
/* u2_ckd_by_put(): map put for key `b`, value `c` in map `a`.
*/
u2_weak
u2_ckd_by_put(u2_noun a, u2_noun b, u2_noun c);
/* u2_ckd_by_has(): test for get.
*/
u2_bean
u2_ckd_by_has(u2_noun a, u2_noun b);
/* u2_ckd_by_gas(): list to map.
*/
u2_noun
u2_ckd_by_gas(u2_noun a, u2_noun b);
/* u2_ckd_in_gas(): list to map.
*/
u2_noun
u2_ckd_in_gas(u2_noun a, u2_noun b);
/* u2_ckd_in_has(): test for presence.
*/
u2_bean
u2_ckd_in_has(u2_noun a, u2_noun b);
/* u2_ckd_in_tap(): map/set convert to list. (solves by_tap also.)
*/
u2_noun
u2_ckd_in_tap(u2_noun a, u2_noun b);
#define u2_ckd_by_tap(a, b) u2_ckd_in_tap(a, b)
/* u2_cke: tier 5 functions
*/
/* u2_cke_cue(): expand saved pill.
*/
u2_noun
u2_cke_cue(u2_atom a);
/* u2_cke_jam(): pack noun as atom.
*/
u2_atom
u2_cke_jam(u2_noun a);
/* u2_cke_trip: atom to tape.
*/
u2_noun
u2_cke_trip(u2_noun a);
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