From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.1 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: from second.openwall.net (second.openwall.net [193.110.157.125]) by inbox.vuxu.org (Postfix) with SMTP id 968F02B582 for ; Wed, 12 Jun 2024 18:06:31 +0200 (CEST) Received: (qmail 5355 invoked by uid 550); 12 Jun 2024 16:06:27 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 5318 invoked from network); 12 Jun 2024 16:06:27 -0000 X-QQ-mid: bizesmtpsz9t1718208374t3c3ohc X-QQ-Originating-IP: N5MjJ9XAzpt+bMdrFk7cqpoF3cADERhj7O1aWJ1dxjQ= X-QQ-SSF: 0130000000000030B000000A0000000 X-QQ-FEAT: 3TU4lZyjrC1L1z3wgFKSurFN4g2OSzAEeKsyeLfNt7uU3wuL1y/Sy+J6Bw2v3 Xe1e87ECbeqWt2fgkhQbiuJAe2opBOY8/DC27JWWtNl+6NSN18IvmmnbqjgAU0U/yP9A6p0 qztMVts5xfsaTYPfFVjiGhuZHH4dQcxdM4BjckQs8mtuY1KAgu40Ky2caPud+5fJj22gawx S/826wmCznzKN4gihjVprMHumzyopIcBXZVyR0emY7vklOBnFrtTLTQORlgoq4gjarQ8+sS u3mKJVMGHw+ZlapfeYN3wjzIS8zCxdkymLqezOnMv2wzYssxnqUG1+NESAFrk0w9CTp6lSn gBR8dXNA1Xh+1vgjL3c/FQN0E9opA== X-QQ-GoodBg: 0 X-BIZMAIL-ID: 16955541961645547059 From: Meng Zhuo To: musl@lists.openwall.com Date: Thu, 13 Jun 2024 00:06:12 +0800 Message-Id: <20240612160612.362246-1-mzh@mzh.io> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtpsz:mzh.io:qybglogicsvrgz:qybglogicsvrgz5a-1 Subject: [musl] [PATCH v3] math: add riscv64 round/roundf --- First of all, sorry for any inconvenience. This is my first time try to contribute with mail list. --- v1 -> v3: * using isfinite to check NaN,+-inf and in range without raising INVALID * inlined copysign(f) --- src/math/riscv64/round.c | 20 ++++++++++++++++++++ src/math/riscv64/roundf.c | 20 ++++++++++++++++++++ 2 files changed, 40 insertions(+) create mode 100644 src/math/riscv64/round.c create mode 100644 src/math/riscv64/roundf.c diff --git a/src/math/riscv64/round.c b/src/math/riscv64/round.c new file mode 100644 index 00000000..6d91c093 --- /dev/null +++ b/src/math/riscv64/round.c @@ -0,0 +1,20 @@ +#include + +#if __riscv_flen >= 64 + +double round(double x) +{ + if (!isfinite(x)) return x; + double tmp; + long long n; + __asm__ ("fcvt.l.d %0, %1, rmm" : "=r"(n) : "f"(x)); + __asm__ ("fcvt.d.l %0, %1" : "=f"(tmp) : "r"(n)); + __asm__ ("fsgnj.d %0, %1, %2" : "=f"(x) : "f"(tmp), "f"(x)); + return x; +} + +#else + +#include "../round.c" + +#endif diff --git a/src/math/riscv64/roundf.c b/src/math/riscv64/roundf.c new file mode 100644 index 00000000..e67e791f --- /dev/null +++ b/src/math/riscv64/roundf.c @@ -0,0 +1,20 @@ +#include + +#if __riscv_flen >= 32 + +float roundf(float x) +{ + if (!isfinite(x)) return x; + float tmp; + long n; + __asm__ ("fcvt.w.s %0, %1, rmm" : "=r"(n) : "f"(x)); + __asm__ ("fcvt.s.w %0, %1" : "=f"(tmp) : "r"(n)); + __asm__ ("fsgnj.s %0, %1, %2" : "=f"(x) : "f"(tmp), "f"(x)); + return x; +} + +#else + +#include "../roundf.c" + +#endif -- 2.39.2