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{ "id": 28368, "url": "https://patches.dpdk.org/api/patches/28368/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1504611516-27404-3-git-send-email-pbhagavatula@caviumnetworks.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1504611516-27404-3-git-send-email-pbhagavatula@caviumnetworks.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1504611516-27404-3-git-send-email-pbhagavatula@caviumnetworks.com", "date": "2017-09-05T11:38:36", "name": "[dpdk-dev,v5,3/3] test: add tests for reciprocal based division", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "6e100e52d3b9f0d0ab511d42d4f8907c602ca9c7", "submitter": { "id": 768, "url": "https://patches.dpdk.org/api/people/768/?format=api", "name": "Pavan Nikhilesh", "email": "pbhagavatula@caviumnetworks.com" }, "delegate": null, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1504611516-27404-3-git-send-email-pbhagavatula@caviumnetworks.com/mbox/", "series": [], "comments": "https://patches.dpdk.org/api/patches/28368/comments/", "check": "success", "checks": "https://patches.dpdk.org/api/patches/28368/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id 7A9AD37AC;\n\tTue, 5 Sep 2017 13:39:14 +0200 (CEST)", "from NAM03-BY2-obe.outbound.protection.outlook.com\n\t(mail-by2nam03on0071.outbound.protection.outlook.com [104.47.42.71])\n\tby dpdk.org (Postfix) with ESMTP id 9C73B5688\n\tfor <dev@dpdk.org>; Tue, 5 Sep 2017 13:39:12 +0200 (CEST)", "from PBHAGAVATULA-LT.caveonetworks.com (111.93.218.67) by\n\tCY4PR07MB3464.namprd07.prod.outlook.com (10.171.252.145) with\n\tMicrosoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id\n\t15.20.13.10; Tue, 5 Sep 2017 11:39:08 +0000" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=yrvQywKUWp0lg3r9yayS0C7FAvmnVL564EJwAk9+jN8=;\n\tb=QVS7RUiXh8Oui8g+kZ/fmfazeqLRbWBAgpRnLqi2XWkecVeCs+K/8TTWACluFpFjmKry4ieX+njaEm0PjtkTtxu3Qy5AbxjQZ2Fbsl2bBDfOl3+Biqz0W99aZM3gAeOwItYaNlKIeahjbw8fB3SLgHrxldI1ykOe9wWmqVKNx7M=", "Authentication-Results": "spf=none (sender IP is )\n\tsmtp.mailfrom=Pavan.Bhagavatula@cavium.com; ", "From": "Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>", "To": "cristian.dumitrescu@intel.com,\n\tstephen@networkplumber.org", "Cc": "dev@dpdk.org,\n\tPavan Bhagavatula <pbhagavatula@caviumnetworks.com>", "Date": "Tue, 5 Sep 2017 17:08:36 +0530", "Message-Id": "<1504611516-27404-3-git-send-email-pbhagavatula@caviumnetworks.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1504611516-27404-1-git-send-email-pbhagavatula@caviumnetworks.com>", "References": "<1504611516-27404-1-git-send-email-pbhagavatula@caviumnetworks.com>", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-Originating-IP": "[111.93.218.67]", "X-ClientProxiedBy": "BM1PR01CA0090.INDPRD01.PROD.OUTLOOK.COM (10.174.208.158)\n\tTo\n\tCY4PR07MB3464.namprd07.prod.outlook.com (10.171.252.145)", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "7715b53b-8609-4436-a7dd-08d4f452b9bf", "X-Microsoft-Antispam": "UriScan:; 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PCL:0;\n\tRULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6040450)(2401047)(8121501046)(5005006)(93006095)(100000703101)(100105400095)(10201501046)(3002001)(6041248)(201703131423075)(201702281528075)(201703061421075)(201703061406153)(20161123562025)(20161123555025)(20161123558100)(20161123560025)(20161123564025)(6072148)(201708071742011)(100000704101)(100105200095)(100000705101)(100105500095);\n\tSRVR:CY4PR07MB3464; BCL:0; PCL:0;\n\tRULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(100000804101)(100110200095)(100000805101)(100110500095);\n\tSRVR:CY4PR07MB3464; ", "X-Forefront-PRVS": "0421BF7135", "X-Forefront-Antispam-Report": "SFV:NSPM;\n\tSFS:(10009020)(6009001)(189002)(199003)(36756003)(68736007)(42186005)(189998001)(50466002)(305945005)(5003940100001)(7736002)(33646002)(66066001)(6512007)(69596002)(8676002)(53936002)(81156014)(81166006)(106356001)(105586002)(48376002)(47776003)(110136004)(53416004)(107886003)(5009440100003)(50986999)(50226002)(76176999)(8936002)(101416001)(97736004)(6116002)(6506006)(6486002)(3846002)(2950100002)(6666003)(478600001)(42882006)(72206003)(5660300001)(25786009)(4326008)(2906002)(42262002);\n\tDIR:OUT; SFP:1101; SCL:1; SRVR:CY4PR07MB3464;\n\tH:PBHAGAVATULA-LT.caveonetworks.com; FPR:; SPF:None; PTR:InfoNoRecords;\n\tMX:1; A:1; LANG:en; ", "Received-SPF": "None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)", "SpamDiagnosticOutput": "1:99", "SpamDiagnosticMetadata": "NSPM", "X-OriginatorOrg": "caviumnetworks.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "05 Sep 2017 11:39:08.8954\n\t(UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "711e4ccf-2e9b-4bcf-a551-4094005b6194", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "CY4PR07MB3464", "Subject": "[dpdk-dev] [PATCH v5 3/3] test: add tests for reciprocal based\n\tdivision", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://dpdk.org/ml/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "From: Pavan Bhagavatula <pbhagavatula@caviumnetworks.com>\n\nThis commit provides a set of tests for verifying the correctness and\nperformance of both unsigned 32 and 64bit reciprocal based division.\n\nSigned-off-by: Pavan Nikhilesh <pbhagavatula@caviumnetworks.com>\n---\n test/test/Makefile | 2 +\n test/test/test_reciprocal_division.c | 109 +++++++++++++++++\n test/test/test_reciprocal_division_perf.c | 193 ++++++++++++++++++++++++++++++\n 3 files changed, 304 insertions(+)\n create mode 100644 test/test/test_reciprocal_division.c\n create mode 100644 test/test/test_reciprocal_division_perf.c", "diff": "diff --git a/test/test/Makefile b/test/test/Makefile\nindex 42d9a49..6017862 100644\n--- a/test/test/Makefile\n+++ b/test/test/Makefile\n@@ -94,6 +94,8 @@ SRCS-y += test_cycles.c\n SRCS-y += test_spinlock.c\n SRCS-y += test_memory.c\n SRCS-y += test_memzone.c\n+SRCS-y += test_reciprocal_division.c\n+SRCS-y += test_reciprocal_division_perf.c\n \n SRCS-y += test_ring.c\n SRCS-y += test_ring_perf.c\ndiff --git a/test/test/test_reciprocal_division.c b/test/test/test_reciprocal_division.c\nnew file mode 100644\nindex 0000000..771ea64\n--- /dev/null\n+++ b/test/test/test_reciprocal_division.c\n@@ -0,0 +1,109 @@\n+/*\n+ * BSD LICENSE\n+ *\n+ * Copyright (C) Cavium, Inc. 2017.\n+ *\n+ * Redistribution and use in source and binary forms, with or without\n+ * modification, are permitted provided that the following conditions\n+ * are met:\n+ *\n+ * * Redistributions of source code must retain the above copyright\n+ * notice, this list of conditions and the following disclaimer.\n+ * * Redistributions in binary form must reproduce the above copyright\n+ * notice, this list of conditions and the following disclaimer in\n+ * the documentation and/or other materials provided with the\n+ * distribution.\n+ * * Neither the name of Cavium, Inc nor the names of its\n+ * contributors may be used to endorse or promote products derived\n+ * from this software without specific prior written permission.\n+ *\n+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n+ * \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n+ */\n+\n+#include \"test.h\"\n+\n+#include <stdio.h>\n+#include <unistd.h>\n+#include <inttypes.h>\n+\n+#include <rte_common.h>\n+#include <rte_cycles.h>\n+#include <rte_random.h>\n+#include <rte_reciprocal.h>\n+\n+#define MAX_ITERATIONS\t1000000\n+#define DIVIDE_ITER\t\t100\n+\n+static int\n+test_reciprocal_division(void)\n+{\n+\tint i;\n+\tint result = 0;\n+\tuint32_t divisor_u32 = 0;\n+\tuint32_t dividend_u32;\n+\tuint32_t nresult_u32;\n+\tuint32_t rresult_u32;\n+\tuint64_t divisor_u64 = 0;\n+\tuint64_t dividend_u64;\n+\tuint64_t nresult_u64;\n+\tuint64_t rresult_u64;\n+\tstruct rte_reciprocal_u32 reci_u32;\n+\tstruct rte_reciprocal_u64 reci_u64;\n+\n+\trte_srand(rte_rdtsc());\n+\tprintf(\"Validating unsigned 32bit division.\\n\");\n+\tfor (i = 0; i < MAX_ITERATIONS; i++) {\n+\t\t/* Change divisor every DIVIDE_ITER iterations. */\n+\t\tif (i % DIVIDE_ITER == 0) {\n+\t\t\tdivisor_u32 = rte_rand();\n+\t\t\treci_u32 = rte_reciprocal_value_u32(divisor_u32);\n+\t\t}\n+\n+\t\tdividend_u32 = rte_rand();\n+\t\tnresult_u32 = dividend_u32 / divisor_u32;\n+\t\trresult_u32 = rte_reciprocal_divide_u32(dividend_u32,\n+\t\t\t\t&reci_u32);\n+\t\tif (nresult_u32 != rresult_u32) {\n+\t\t\tprintf(\"Division failed, expected %\"PRIu32\" \"\n+\t\t\t\t \"result %\"PRIu32\"\",\n+\t\t\t\t\tnresult_u32, rresult_u32);\n+\t\t\tresult = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\n+\tprintf(\"Validating unsigned 64bit division.\\n\");\n+\tfor (i = 0; i < MAX_ITERATIONS; i++) {\n+\t\t/* Change divisor every DIVIDE_ITER iterations. */\n+\t\tif (i % DIVIDE_ITER == 0) {\n+\t\t\tdivisor_u64 = rte_rand();\n+\t\t\treci_u64 = rte_reciprocal_value_u64(divisor_u64);\n+\t\t}\n+\n+\t\tdividend_u64 = rte_rand();\n+\t\tnresult_u64 = dividend_u64 / divisor_u64;\n+\t\trresult_u64 = rte_reciprocal_divide_u64(dividend_u64,\n+\t\t\t\t&reci_u64);\n+\t\tif (nresult_u64 != rresult_u64) {\n+\t\t\tprintf(\"Division failed, expected %\"PRIu64\" \"\n+\t\t\t\t \"result %\"PRIu64\"\",\n+\t\t\t\t\tnresult_u64, rresult_u64);\n+\t\t\tresult = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\n+\treturn result;\n+}\n+\n+REGISTER_TEST_COMMAND(reciprocal_division, test_reciprocal_division);\ndiff --git a/test/test/test_reciprocal_division_perf.c b/test/test/test_reciprocal_division_perf.c\nnew file mode 100644\nindex 0000000..3eaf575\n--- /dev/null\n+++ b/test/test/test_reciprocal_division_perf.c\n@@ -0,0 +1,193 @@\n+/*\n+ * BSD LICENSE\n+ *\n+ * Copyright (C) Cavium, Inc. 2017.\n+ *\n+ * Redistribution and use in source and binary forms, with or without\n+ * modification, are permitted provided that the following conditions\n+ * are met:\n+ *\n+ * * Redistributions of source code must retain the above copyright\n+ * notice, this list of conditions and the following disclaimer.\n+ * * Redistributions in binary form must reproduce the above copyright\n+ * notice, this list of conditions and the following disclaimer in\n+ * the documentation and/or other materials provided with the\n+ * distribution.\n+ * * Neither the name of Cavium, Inc nor the names of its\n+ * contributors may be used to endorse or promote products derived\n+ * from this software without specific prior written permission.\n+ *\n+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n+ * \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n+ */\n+\n+#include \"test.h\"\n+\n+#include <stdio.h>\n+#include <unistd.h>\n+#include <inttypes.h>\n+\n+#include <rte_common.h>\n+#include <rte_cycles.h>\n+#include <rte_random.h>\n+#include <rte_reciprocal.h>\n+\n+#define MAX_ITERATIONS\t1000000\n+#define DIVIDE_ITER\t\t100\n+\n+static int\n+test_reciprocal_division_perf(void)\n+{\n+\tint result = 0;\n+\tuint32_t divisor_u32 = 0;\n+\tvolatile uint32_t dividend_u32;\n+\tuint32_t nresult_u32;\n+\tuint32_t rresult_u32;\n+\tuint64_t divisor_u64 = 0;\n+\tvolatile uint64_t dividend_u64;\n+\tuint64_t nresult_u64;\n+\tuint64_t rresult_u64;\n+\tuint64_t start_cyc;\n+\tuint64_t split_cyc;\n+\tuint64_t end_cyc;\n+\tuint64_t tot_cyc_n = 0;\n+\tuint64_t tot_cyc_r = 0;\n+\tuint64_t i;\n+\tstruct rte_reciprocal_u32 reci_u32 = {0};\n+\tstruct rte_reciprocal_u64 reci_u64 = {0};\n+\n+\trte_srand(rte_rdtsc());\n+\n+\tprintf(\"Validating unsigned 32bit division.\\n\");\n+\n+\tfor (i = 0; i < MAX_ITERATIONS; i++) {\n+\t\t/* Change divisor every DIVIDE_ITER iterations. */\n+\t\tif (i % DIVIDE_ITER == 0) {\n+\t\t\tdivisor_u32 = rte_rand();\n+\t\t\treci_u32 = rte_reciprocal_value_u32(divisor_u32);\n+\t\t}\n+\n+\t\tdividend_u32 = rte_rand();\n+\n+\t\tstart_cyc = rte_rdtsc();\n+\t\tnresult_u32 = dividend_u32 / divisor_u32;\n+\t\tsplit_cyc = rte_rdtsc();\n+\t\trresult_u32 = rte_reciprocal_divide_u32(dividend_u32,\n+\t\t\t\t&reci_u32);\n+\t\tend_cyc = rte_rdtsc();\n+\n+\t\ttot_cyc_n += split_cyc - start_cyc;\n+\t\ttot_cyc_r += end_cyc - split_cyc;\n+\t\tif (nresult_u32 != rresult_u32) {\n+\t\t\tprintf(\"Division failed, expected %\"PRIu32\" \"\n+\t\t\t\t\t\"result %\"PRIu32\"\",\n+\t\t\t\t\tnresult_u32, rresult_u32);\n+\t\t\tresult = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\tprintf(\"32bit Division results:\\n\");\n+\tprintf(\"Total number of cycles normal division : %\"PRIu64\"\\n\",\n+\t\t\ttot_cyc_n);\n+\tprintf(\"Total number of cycles reciprocal division : %\"PRIu64\"\\n\",\n+\t\t\ttot_cyc_r);\n+\tprintf(\"Cycles per division(normal) : %3.2f\\n\",\n+\t\t\t((double)tot_cyc_n)/i);\n+\tprintf(\"Cycles per division(reciprocal) : %3.2f\\n\\n\",\n+\t\t\t((double)tot_cyc_r)/i);\n+\n+\ttot_cyc_n = 0;\n+\ttot_cyc_r = 0;\n+\n+\tprintf(\"Validating unsigned 64bit division.\\n\");\n+\n+\tfor (i = 0; i < MAX_ITERATIONS; i++) {\n+\t\t/* Change divisor every DIVIDE_ITER iterations. */\n+\t\tif (i % DIVIDE_ITER == 0) {\n+\t\t\tdivisor_u64 = rte_rand();\n+\t\t\treci_u64 = rte_reciprocal_value_u64(divisor_u64);\n+\t\t}\n+\n+\t\tdividend_u64 = rte_rand();\n+\n+\t\tstart_cyc = rte_rdtsc();\n+\t\tnresult_u64 = dividend_u64 / divisor_u64;\n+\t\tsplit_cyc = rte_rdtsc();\n+\t\trresult_u64 = rte_reciprocal_divide_u64(dividend_u64,\n+\t\t\t\t&reci_u64);\n+\t\tend_cyc = rte_rdtsc();\n+\n+\t\ttot_cyc_n += split_cyc - start_cyc;\n+\t\ttot_cyc_r += end_cyc - split_cyc;\n+\t\tif (nresult_u64 != rresult_u64) {\n+\t\t\tprintf(\"Division failed, expected %\"PRIu64\" \"\n+\t\t\t\t\t\"result %\"PRIu64\"\",\n+\t\t\t\t\tnresult_u64, rresult_u64);\n+\t\t\tresult = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\tprintf(\"64bit Division results:\\n\");\n+\tprintf(\"Total number of cycles normal division : %\"PRIu64\"\\n\",\n+\t\t\ttot_cyc_n);\n+\tprintf(\"Total number of cycles reciprocal division : %\"PRIu64\"\\n\",\n+\t\t\ttot_cyc_r);\n+\tprintf(\"Cycles per division(normal) : %3.2f\\n\",\n+\t\t\t((double)tot_cyc_n)/i);\n+\tprintf(\"Cycles per division(reciprocal) : %3.2f\\n\\n\",\n+\t\t\t((double)tot_cyc_r)/i);\n+\n+\ttot_cyc_n = 0;\n+\ttot_cyc_r = 0;\n+\n+\tprintf(\"Validating unsigned 64bit division with 32bit divisor.\\n\");\n+\n+\tfor (i = 0; i < MAX_ITERATIONS; i++) {\n+\t\t/* Change divisor every DIVIDE_ITER iterations. */\n+\t\tif (i % DIVIDE_ITER == 0) {\n+\t\t\tdivisor_u64 = rte_rand() >> 32;\n+\t\t\treci_u64 = rte_reciprocal_value_u64(divisor_u64);\n+\t\t}\n+\n+\t\tdividend_u64 = rte_rand();\n+\n+\t\tstart_cyc = rte_rdtsc();\n+\t\tnresult_u64 = dividend_u64 / divisor_u64;\n+\t\tsplit_cyc = rte_rdtsc();\n+\t\trresult_u64 = rte_reciprocal_divide_u64(dividend_u64,\n+\t\t\t\t&reci_u64);\n+\t\tend_cyc = rte_rdtsc();\n+\n+\t\ttot_cyc_n += split_cyc - start_cyc;\n+\t\ttot_cyc_r += end_cyc - split_cyc;\n+\t\tif (nresult_u64 != rresult_u64) {\n+\t\t\tprintf(\"Division failed, expected %\"PRIu64\" \"\n+\t\t\t\t\t\"result %\"PRIu64\"\",\n+\t\t\t\t\tnresult_u64, rresult_u64);\n+\t\t\tresult = 1;\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\tprintf(\"64bit Division results:\\n\");\n+\tprintf(\"Total number of cycles normal division : %\"PRIu64\"\\n\",\n+\t\t\ttot_cyc_n);\n+\tprintf(\"Total number of cycles reciprocal division : %\"PRIu64\"\\n\",\n+\t\t\ttot_cyc_r);\n+\tprintf(\"Cycles per division(normal) : %3.2f\\n\",\n+\t\t\t((double)tot_cyc_n)/i);\n+\tprintf(\"Cycles per division(reciprocal) : %3.2f\\n\",\n+\t\t\t((double)tot_cyc_r)/i);\n+\n+\treturn result;\n+}\n+\n+REGISTER_TEST_COMMAND(reciprocal_division_perf, test_reciprocal_division_perf);\n", "prefixes": [ "dpdk-dev", "v5", "3/3" ] }