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Code Issues 1 Releases Wiki Activity

floor div, variadic mod

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primo-ppcg
2023-06-28 16:35:16 +07:00
parent 0cd00da354
commit c83f3ec097
9 changed files with 90 additions and 42 deletions
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2
src/boot/boot.janet
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@@ -151,7 +151,7 @@
(defmacro -= "Decrements the var x by n." [x & ns] ~(set ,x (,- ,x ,;ns)))
(defmacro *= "Shorthand for (set x (\\* x n))." [x & ns] ~(set ,x (,* ,x ,;ns)))
(defmacro /= "Shorthand for (set x (/ x n))." [x & ns] ~(set ,x (,/ ,x ,;ns)))
(defmacro %= "Shorthand for (set x (% x n))." [x n] ~(set ,x (,% ,x ,n)))
(defmacro %= "Shorthand for (set x (% x n))." [x & ns] ~(set ,x (,% ,x ,;ns)))
(defmacro assert
"Throw an error if x is not truthy. Will not evaluate `err` if x is truthy."

1
src/core/asm.c
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@@ -75,6 +75,7 @@ static const JanetInstructionDef janet_ops[] = {
{"cmp", JOP_COMPARE},
{"cncl", JOP_CANCEL},
{"div", JOP_DIVIDE},
{"divf", JOP_DIVIDE_FLOOR},
{"divim", JOP_DIVIDE_IMMEDIATE},
{"eq", JOP_EQUALS},
{"eqim", JOP_EQUALS_IMMEDIATE},

2
src/core/bytecode.c
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@@ -42,6 +42,7 @@ enum JanetInstructionType janet_instructions[JOP_INSTRUCTION_COUNT] = {
JINT_SSS, /* JOP_MULTIPLY, */
JINT_SSI, /* JOP_DIVIDE_IMMEDIATE, */
JINT_SSS, /* JOP_DIVIDE, */
JINT_SSS, /* JOP_DIVIDE_FLOOR */
JINT_SSS, /* JOP_MODULO, */
JINT_SSS, /* JOP_REMAINDER, */
JINT_SSS, /* JOP_BAND, */
@@ -301,6 +302,7 @@ void janet_bytecode_movopt(JanetFuncDef *def) {
case JOP_SUBTRACT:
case JOP_MULTIPLY:
case JOP_DIVIDE:
case JOP_DIVIDE_FLOOR:
case JOP_MODULO:
case JOP_REMAINDER:
case JOP_SHIFT_LEFT:

53
src/core/cfuns.c
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@@ -116,7 +116,8 @@ static JanetSlot opreduce(
JanetSlot *args,
int op,
int opim,
Janet nullary) {
Janet nullary,
Janet unary) {
JanetCompiler *c = opts.compiler;
int32_t i, len;
int8_t imm = 0;
@@ -132,7 +133,7 @@ static JanetSlot opreduce(
if (op == JOP_SUBTRACT) {
janetc_emit_ssi(c, JOP_MULTIPLY_IMMEDIATE, t, args[0], -1, 1);
} else {
janetc_emit_sss(c, op, t, janetc_cslot(nullary), args[0], 1);
janetc_emit_sss(c, op, t, janetc_cslot(unary), args[0], 1);
}
return t;
}
@@ -155,7 +156,7 @@ static JanetSlot opreduce(
/* Function optimizers */
static JanetSlot do_propagate(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_PROPAGATE, 0, janet_wrap_nil());
return opreduce(opts, args, JOP_PROPAGATE, 0, janet_wrap_nil(), janet_wrap_nil());
}
static JanetSlot do_error(JanetFopts opts, JanetSlot *args) {
janetc_emit_s(opts.compiler, JOP_ERROR, args[0], 0);
@@ -172,7 +173,7 @@ static JanetSlot do_debug(JanetFopts opts, JanetSlot *args) {
return t;
}
static JanetSlot do_in(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_IN, 0, janet_wrap_nil());
return opreduce(opts, args, JOP_IN, 0, janet_wrap_nil(), janet_wrap_nil());
}
static JanetSlot do_get(JanetFopts opts, JanetSlot *args) {
if (janet_v_count(args) == 3) {
@@ -192,20 +193,14 @@ static JanetSlot do_get(JanetFopts opts, JanetSlot *args) {
c->buffer[label] |= (current - label) << 16;
return t;
} else {
return opreduce(opts, args, JOP_GET, 0, janet_wrap_nil());
return opreduce(opts, args, JOP_GET, 0, janet_wrap_nil(), janet_wrap_nil());
}
}
static JanetSlot do_next(JanetFopts opts, JanetSlot *args) {
return opfunction(opts, args, JOP_NEXT, janet_wrap_nil());
}
static JanetSlot do_modulo(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_MODULO, 0, janet_wrap_nil());
}
static JanetSlot do_remainder(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_REMAINDER, 0, janet_wrap_nil());
}
static JanetSlot do_cmp(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_COMPARE, 0, janet_wrap_nil());
return opreduce(opts, args, JOP_COMPARE, 0, janet_wrap_nil(), janet_wrap_nil());
}
static JanetSlot do_put(JanetFopts opts, JanetSlot *args) {
if (opts.flags & JANET_FOPTS_DROP) {
@@ -262,34 +257,43 @@ static JanetSlot do_apply(JanetFopts opts, JanetSlot *args) {
/* Variadic operators specialization */
static JanetSlot do_add(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_ADD, JOP_ADD_IMMEDIATE, janet_wrap_integer(0));
return opreduce(opts, args, JOP_ADD, JOP_ADD_IMMEDIATE, janet_wrap_integer(0), janet_wrap_integer(0));
}
static JanetSlot do_sub(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_SUBTRACT, -JOP_ADD_IMMEDIATE, janet_wrap_integer(0));
return opreduce(opts, args, JOP_SUBTRACT, -JOP_ADD_IMMEDIATE, janet_wrap_integer(0), janet_wrap_integer(0));
}
static JanetSlot do_mul(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_MULTIPLY, JOP_MULTIPLY_IMMEDIATE, janet_wrap_integer(1));
return opreduce(opts, args, JOP_MULTIPLY, JOP_MULTIPLY_IMMEDIATE, janet_wrap_integer(1), janet_wrap_integer(1));
}
static JanetSlot do_div(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_DIVIDE, JOP_DIVIDE_IMMEDIATE, janet_wrap_integer(1));
return opreduce(opts, args, JOP_DIVIDE, JOP_DIVIDE_IMMEDIATE, janet_wrap_integer(1), janet_wrap_integer(1));
}
static JanetSlot do_divf(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_DIVIDE_FLOOR, 0, janet_wrap_integer(1), janet_wrap_integer(1));
}
static JanetSlot do_modulo(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_MODULO, 0, janet_wrap_integer(0), janet_wrap_integer(1));
}
static JanetSlot do_remainder(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_REMAINDER, 0, janet_wrap_integer(0), janet_wrap_integer(1));
}
static JanetSlot do_band(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_BAND, 0, janet_wrap_integer(-1));
return opreduce(opts, args, JOP_BAND, 0, janet_wrap_integer(-1), janet_wrap_integer(-1));
}
static JanetSlot do_bor(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_BOR, 0, janet_wrap_integer(0));
return opreduce(opts, args, JOP_BOR, 0, janet_wrap_integer(0), janet_wrap_integer(0));
}
static JanetSlot do_bxor(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_BXOR, 0, janet_wrap_integer(0));
return opreduce(opts, args, JOP_BXOR, 0, janet_wrap_integer(0), janet_wrap_integer(0));
}
static JanetSlot do_lshift(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_SHIFT_LEFT, JOP_SHIFT_LEFT_IMMEDIATE, janet_wrap_integer(1));
return opreduce(opts, args, JOP_SHIFT_LEFT, JOP_SHIFT_LEFT_IMMEDIATE, janet_wrap_integer(1), janet_wrap_integer(1));
}
static JanetSlot do_rshift(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_SHIFT_RIGHT, JOP_SHIFT_RIGHT_IMMEDIATE, janet_wrap_integer(1));
return opreduce(opts, args, JOP_SHIFT_RIGHT, JOP_SHIFT_RIGHT_IMMEDIATE, janet_wrap_integer(1), janet_wrap_integer(1));
}
static JanetSlot do_rshiftu(JanetFopts opts, JanetSlot *args) {
return opreduce(opts, args, JOP_SHIFT_RIGHT_UNSIGNED, JOP_SHIFT_RIGHT_UNSIGNED_IMMEDIATE, janet_wrap_integer(1));
return opreduce(opts, args, JOP_SHIFT_RIGHT_UNSIGNED, JOP_SHIFT_RIGHT_UNSIGNED_IMMEDIATE, janet_wrap_integer(1), janet_wrap_integer(1));
}
static JanetSlot do_bnot(JanetFopts opts, JanetSlot *args) {
return genericSS(opts, JOP_BNOT, args[0]);
@@ -383,10 +387,11 @@ static const JanetFunOptimizer optimizers[] = {
{fixarity2, do_propagate},
{arity2or3, do_get},
{arity1or2, do_next},
{fixarity2, do_modulo},
{fixarity2, do_remainder},
{NULL, do_modulo},
{NULL, do_remainder},
{fixarity2, do_cmp},
{fixarity2, do_cancel},
{NULL, do_divf}
};
const JanetFunOptimizer *janetc_funopt(uint32_t flags) {

1
src/core/compile.h
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@@ -69,6 +69,7 @@ typedef enum {
#define JANET_FUN_REMAINDER 30
#define JANET_FUN_CMP 31
#define JANET_FUN_CANCEL 32
#define JANET_FUN_DIVIDE_FLOOR 33
/* Compiler typedefs */
typedef struct JanetCompiler JanetCompiler;

27
src/core/corelib.c
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@@ -985,14 +985,6 @@ static const uint32_t next_asm[] = {
JOP_NEXT | (1 << 24),
JOP_RETURN
};
static const uint32_t modulo_asm[] = {
JOP_MODULO | (1 << 24),
JOP_RETURN
};
static const uint32_t remainder_asm[] = {
JOP_REMAINDER | (1 << 24),
JOP_RETURN
};
static const uint32_t cmp_asm[] = {
JOP_COMPARE | (1 << 24),
JOP_RETURN
@@ -1077,14 +1069,6 @@ static void janet_load_libs(JanetTable *env) {
JanetTable *janet_core_env(JanetTable *replacements) {
JanetTable *env = (NULL != replacements) ? replacements : janet_table(0);
janet_quick_asm(env, JANET_FUN_MODULO,
"mod", 2, 2, 2, 2, modulo_asm, sizeof(modulo_asm),
JDOC("(mod dividend divisor)\n\n"
"Returns the modulo of dividend / divisor."));
janet_quick_asm(env, JANET_FUN_REMAINDER,
"%", 2, 2, 2, 2, remainder_asm, sizeof(remainder_asm),
JDOC("(% dividend divisor)\n\n"
"Returns the remainder of dividend / divisor."));
janet_quick_asm(env, JANET_FUN_CMP,
"cmp", 2, 2, 2, 2, cmp_asm, sizeof(cmp_asm),
JDOC("(cmp x y)\n\n"
@@ -1183,6 +1167,17 @@ JanetTable *janet_core_env(JanetTable *replacements) {
"Returns the quotient of xs. If xs is empty, returns 1. If xs has one value x, returns "
"the reciprocal of x. Otherwise return the first value of xs repeatedly divided by the remaining "
"values."));
templatize_varop(env, JANET_FUN_DIVIDE_FLOOR, "div", 1, 1, JOP_DIVIDE_FLOOR,
JDOC("(div & xs)\n\n"
"Returns the floored division of xs. If xs is empty, returns 1. If xs has one value x, returns "
"the reciprocal of x. Otherwise return the first value of xs repeatedly divided by the remaining "
"values."));
templatize_varop(env, JANET_FUN_MODULO, "mod", 0, 1, JOP_MODULO,
JDOC("(mod dividend divisor)\n\n"
"Returns the modulo of dividend / divisor."));
templatize_varop(env, JANET_FUN_REMAINDER, "%", 0, 1, JOP_REMAINDER,
JDOC("(% dividend divisor)\n\n"
"Returns the remainder of dividend / divisor."));
templatize_varop(env, JANET_FUN_BAND, "band", -1, -1, JOP_BAND,
JDOC("(band & xs)\n\n"
"Returns the bit-wise and of all values in xs. Each x in xs must be an integer."));

28
src/core/inttypes.c
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@@ -490,11 +490,34 @@ static Janet cfun_it_##type##_##name(int32_t argc, Janet *argv) { \
return janet_wrap_abstract(box); \
} \
static Janet cfun_it_s64_divf(int32_t argc, Janet *argv) {
janet_fixarity(argc, 2);
int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
int64_t op1 = janet_unwrap_s64(argv[0]);
int64_t op2 = janet_unwrap_s64(argv[1]);
if (op2 == 0) janet_panic("division by zero");
int64_t x = op1 / op2;
*box = x - (((op1 ^ op2) < 0) && (x * op2 != op1));
return janet_wrap_abstract(box);
}
static Janet cfun_it_s64_divfi(int32_t argc, Janet *argv) {
janet_fixarity(argc, 2);
int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
int64_t op2 = janet_unwrap_s64(argv[0]);
int64_t op1 = janet_unwrap_s64(argv[1]);
if (op2 == 0) janet_panic("division by zero");
int64_t x = op1 / op2;
*box = x - (((op1 ^ op2) < 0) && (x * op2 != op1));
return janet_wrap_abstract(box);
}
static Janet cfun_it_s64_mod(int32_t argc, Janet *argv) {
janet_fixarity(argc, 2);
int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
int64_t op1 = janet_unwrap_s64(argv[0]);
int64_t op2 = janet_unwrap_s64(argv[1]);
if (op2 == 0) janet_panic("division by zero");
int64_t x = op1 % op2;
*box = (op1 > 0)
? ((op2 > 0) ? x : (0 == x ? x : x + op2))
@@ -507,6 +530,7 @@ static Janet cfun_it_s64_modi(int32_t argc, Janet *argv) {
int64_t *box = janet_abstract(&janet_s64_type, sizeof(int64_t));
int64_t op2 = janet_unwrap_s64(argv[0]);
int64_t op1 = janet_unwrap_s64(argv[1]);
if (op2 == 0) janet_panic("division by zero");
int64_t x = op1 % op2;
*box = (op1 > 0)
? ((op2 > 0) ? x : (0 == x ? x : x + op2))
@@ -555,6 +579,8 @@ static JanetMethod it_s64_methods[] = {
{"r*", cfun_it_s64_mul},
{"/", cfun_it_s64_div},
{"r/", cfun_it_s64_divi},
{"div", cfun_it_s64_divf},
{"rdiv", cfun_it_s64_divfi},
{"mod", cfun_it_s64_mod},
{"rmod", cfun_it_s64_modi},
{"%", cfun_it_s64_rem},
@@ -580,6 +606,8 @@ static JanetMethod it_u64_methods[] = {
{"r*", cfun_it_u64_mul},
{"/", cfun_it_u64_div},
{"r/", cfun_it_u64_divi},
{"div", cfun_it_u64_div},
{"rdiv", cfun_it_u64_divi},
{"mod", cfun_it_u64_mod},
{"rmod", cfun_it_u64_modi},
{"%", cfun_it_u64_mod},

17
src/core/vm.c
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@@ -342,6 +342,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
&&label_JOP_MULTIPLY,
&&label_JOP_DIVIDE_IMMEDIATE,
&&label_JOP_DIVIDE,
&&label_JOP_DIVIDE_FLOOR,
&&label_JOP_MODULO,
&&label_JOP_REMAINDER,
&&label_JOP_BAND,
@@ -583,7 +584,6 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
&&label_unknown_op,
&&label_unknown_op,
&&label_unknown_op,
&&label_unknown_op,
&&label_unknown_op
};
#endif
@@ -688,6 +688,21 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in) {
VM_OP(JOP_DIVIDE)
vm_binop( /);
VM_OP(JOP_DIVIDE_FLOOR) {
Janet op1 = stack[B];
Janet op2 = stack[C];
if (janet_checktype(op1, JANET_NUMBER) && janet_checktype(op2, JANET_NUMBER)) {
double x1 = janet_unwrap_number(op1);
double x2 = janet_unwrap_number(op2);
stack[A] = janet_wrap_number(floor(x1 / x2));
vm_pcnext();
} else {
vm_commit();
stack[A] = janet_binop_call("div", "rdiv", op1, op2);
vm_checkgc_pcnext();
}
}
VM_OP(JOP_MODULO) {
Janet op1 = stack[B];
Janet op2 = stack[C];

1
src/include/janet.h
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@@ -1267,6 +1267,7 @@ enum JanetOpCode {
JOP_MULTIPLY,
JOP_DIVIDE_IMMEDIATE,
JOP_DIVIDE,
JOP_DIVIDE_FLOOR,
JOP_MODULO,
JOP_REMAINDER,
JOP_BAND,