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Diffstat (limited to 'libavutil/tests/eval.c')
| -rw-r--r-- | libavutil/tests/eval.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/libavutil/tests/eval.c b/libavutil/tests/eval.c new file mode 100644 index 0000000..2a1afcc --- /dev/null +++ b/libavutil/tests/eval.c @@ -0,0 +1,183 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <math.h> +#include <stdio.h> +#include <string.h> + +#include "libavutil/libm.h" +#include "libavutil/timer.h" +#include "libavutil/eval.h" + +static const double const_values[] = { + M_PI, + M_E, + 0 +}; + +static const char *const const_names[] = { + "PI", + "E", + 0 +}; + +int main(int argc, char **argv) +{ + int i; + double d; + const char *const *expr; + static const char *const exprs[] = { + "", + "1;2", + "-20", + "-PI", + "+PI", + "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)", + "80G/80Gi", + "1k", + "1Gi", + "1gi", + "1GiFoo", + "1k+1k", + "1Gi*3foo", + "foo", + "foo(", + "foo()", + "foo)", + "sin", + "sin(", + "sin()", + "sin)", + "sin 10", + "sin(1,2,3)", + "sin(1 )", + "1", + "1foo", + "bar + PI + E + 100f*2 + foo", + "13k + 12f - foo(1, 2)", + "1gi", + "1Gi", + "st(0, 123)", + "st(1, 123); ld(1)", + "lte(0, 1)", + "lte(1, 1)", + "lte(1, 0)", + "lt(0, 1)", + "lt(1, 1)", + "gt(1, 0)", + "gt(2, 7)", + "gte(122, 122)", + /* compute 1+2+...+N */ + "st(0, 1); while(lte(ld(0), 100), st(1, ld(1)+ld(0));st(0, ld(0)+1)); ld(1)", + /* compute Fib(N) */ + "st(1, 1); st(2, 2); st(0, 1); while(lte(ld(0),10), st(3, ld(1)+ld(2)); st(1, ld(2)); st(2, ld(3)); st(0, ld(0)+1)); ld(3)", + "while(0, 10)", + "st(0, 1); while(lte(ld(0),100), st(1, ld(1)+ld(0)); st(0, ld(0)+1))", + "isnan(1)", + "isnan(NAN)", + "isnan(INF)", + "isinf(1)", + "isinf(NAN)", + "isinf(INF)", + "floor(NAN)", + "floor(123.123)", + "floor(-123.123)", + "trunc(123.123)", + "trunc(-123.123)", + "ceil(123.123)", + "ceil(-123.123)", + "sqrt(1764)", + "isnan(sqrt(-1))", + "not(1)", + "not(NAN)", + "not(0)", + "6.0206dB", + "-3.0103dB", + "pow(0,1.23)", + "pow(PI,1.23)", + "PI^1.23", + "pow(-1,1.23)", + "if(1, 2)", + "if(1, 1, 2)", + "if(0, 1, 2)", + "ifnot(0, 23)", + "ifnot(1, NaN) + if(0, 1)", + "ifnot(1, 1, 2)", + "ifnot(0, 1, 2)", + "taylor(1, 1)", + "taylor(eq(mod(ld(1),4),1)-eq(mod(ld(1),4),3), PI/2, 1)", + "root(sin(ld(0))-1, 2)", + "root(sin(ld(0))+6+sin(ld(0)/12)-log(ld(0)), 100)", + "7000000B*random(0)", + "squish(2)", + "gauss(0.1)", + "hypot(4,3)", + "gcd(30,55)*print(min(9,1))", + "bitor(42, 12)", + "bitand(42, 12)", + "bitand(NAN, 1)", + "between(10, -3, 10)", + "between(-4, -2, -1)", + "between(1,2)", + "clip(0, 2, 1)", + "clip(0/0, 1, 2)", + "clip(0, 0/0, 1)", + NULL + }; + int ret; + + for (expr = exprs; *expr; expr++) { + printf("Evaluating '%s'\n", *expr); + ret = av_expr_parse_and_eval(&d, *expr, + const_names, const_values, + NULL, NULL, NULL, NULL, NULL, 0, NULL); + if (isnan(d)) + printf("'%s' -> nan\n\n", *expr); + else + printf("'%s' -> %f\n\n", *expr, d); + if (ret < 0) + printf("av_expr_parse_and_eval failed\n"); + } + + ret = av_expr_parse_and_eval(&d, "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)", + const_names, const_values, + NULL, NULL, NULL, NULL, NULL, 0, NULL); + printf("%f == 12.7\n", d); + if (ret < 0) + printf("av_expr_parse_and_eval failed\n"); + ret = av_expr_parse_and_eval(&d, "80G/80Gi", + const_names, const_values, + NULL, NULL, NULL, NULL, NULL, 0, NULL); + printf("%f == 0.931322575\n", d); + if (ret < 0) + printf("av_expr_parse_and_eval failed\n"); + + if (argc > 1 && !strcmp(argv[1], "-t")) { + for (i = 0; i < 1050; i++) { + START_TIMER; + ret = av_expr_parse_and_eval(&d, "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)", + const_names, const_values, + NULL, NULL, NULL, NULL, NULL, 0, NULL); + if (ret < 0) + printf("av_expr_parse_and_eval failed\n"); + STOP_TIMER("av_expr_parse_and_eval"); + } + } + + return 0; +} |
