-/*
- * Copyright (C) 2012, 2013, 2014
- * Dale Weiler
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
- * so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
#include <string.h>
#include "parser.h"
-/*
- * Provides all the "intrinsics" / "builtins" for GMQCC. These can do
- * a few things, they can provide fall back implementations for math
- * functions if the definitions don't exist for some given engine. Or
- * then can determine definitions for existing builtins, and simply
- * wrap back to them instead. This is like a "portable" intrface that
- * is entered when -fintrin is used (causing all existing builtins to
- * be ignored by the compiler and instead interface through here.
- */
#define intrin_ctx(I) parser_ctx((I)->parser)
static GMQCC_INLINE ast_function *intrin_value(intrin_t *intrin, ast_value **out, const char *name, qcint_t vtype) {
(ast_expression*)ast_binary_new(
intrin_ctx(intrin),
INSTR_MUL_F,
- (ast_expression*)fold_constgen_float(intrin->fold, 0.5),
+ (ast_expression*)fold_constgen_float(intrin->fold, 0.5, false),
(ast_expression*)calllog
)
);
intrin_ctx(intrin),
INSTR_LT,
(ast_expression*)i,
- (ast_expression*)fold_constgen_float(intrin->fold, 200.0f)
+ (ast_expression*)fold_constgen_float(intrin->fold, 200.0f, false)
),
false,
NULL,
intrin_ctx(intrin),
INSTR_GT,
(ast_expression*)callfabs,
- (ast_expression*)fold_constgen_float(intrin->fold, QC_POW_EPSILON)
+ (ast_expression*)fold_constgen_float(intrin->fold, QC_POW_EPSILON, false)
),
/* pre not */
false,
vec_push(value->expression.params, arg1);
vec_push(callln->params, (ast_expression*)arg1);
- vec_push(callln->params, (ast_expression*)fold_constgen_float(intrin->fold, base));
+ vec_push(callln->params, (ast_expression*)fold_constgen_float(intrin->fold, base, false));
vec_push(body->exprs,
(ast_expression*)ast_return_new(
}
static ast_expression *intrin_shift_variant(intrin_t *intrin, const char *name, size_t instr) {
- ast_value *value = NULL;
- ast_call *callpow = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "pow", name));
- ast_value *a = ast_value_new(intrin_ctx(intrin), "a", TYPE_FLOAT);
- ast_value *b = ast_value_new(intrin_ctx(intrin), "b", TYPE_FLOAT);
- ast_block *body = ast_block_new(intrin_ctx(intrin));
- ast_function *func = intrin_value(intrin, &value, name, TYPE_FLOAT);
+ /*
+ * float [shift] (float a, float b) {
+ * return floor(a [instr] pow(2, b));
+ */
+ ast_value *value = NULL;
+ ast_call *callpow = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "pow", name));
+ ast_call *callfloor = ast_call_new (intrin_ctx(intrin), intrin_func_self(intrin, "floor", name));
+ ast_value *a = ast_value_new(intrin_ctx(intrin), "a", TYPE_FLOAT);
+ ast_value *b = ast_value_new(intrin_ctx(intrin), "b", TYPE_FLOAT);
+ ast_block *body = ast_block_new(intrin_ctx(intrin));
+ ast_function *func = intrin_value(intrin, &value, name, TYPE_FLOAT);
vec_push(value->expression.params, a);
vec_push(value->expression.params, b);
+ /* <callpow> = pow(2, b) */
vec_push(callpow->params, (ast_expression*)intrin->fold->imm_float[3]);
vec_push(callpow->params, (ast_expression*)b);
+ /* <callfloor> = floor(a [instr] <callpow>) */
+ vec_push(
+ callfloor->params,
+ (ast_expression*)ast_binary_new(
+ intrin_ctx(intrin),
+ instr,
+ (ast_expression*)a,
+ (ast_expression*)callpow
+ )
+ );
+
+ /* return <callfloor> */
vec_push(body->exprs,
(ast_expression*)ast_return_new(
intrin_ctx(intrin),
- (ast_expression*)ast_binary_new(
- intrin_ctx(intrin),
- instr,
- (ast_expression*)a,
- (ast_expression*)callpow
- )
+ (ast_expression*)callfloor
)
);