![]() |
|
Message-Id: <20240612090018.258573-2-mzh@mzh.io> Date: Wed, 12 Jun 2024 17:00:18 +0800 From: Meng Zhuo <mzh@....io> To: musl@...ts.openwall.com Subject: [PATCH 2/2] math: add riscv64 round/roundf --- src/math/riscv64/round.c | 21 +++++++++++++++++++++ src/math/riscv64/roundf.c | 21 +++++++++++++++++++++ 2 files changed, 42 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..12e670a5 --- /dev/null +++ b/src/math/riscv64/round.c @@ -0,0 +1,21 @@ +#include <math.h> + +#if __riscv_flen >= 64 + +double round(double x) +{ + if (isnan(x)) return x; + if (x == INFINITY || x == -INFINITY) 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)); + x = copysign(tmp, 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..8da3c65a --- /dev/null +++ b/src/math/riscv64/roundf.c @@ -0,0 +1,21 @@ +#include <math.h> + +#if __riscv_flen >= 32 + +float roundf(float x) +{ + if (isnan(x)) return x; + if (x == INFINITY || x == -INFINITY) 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)); + x = copysign(tmp, x); + return x; +} + +#else + +#include "../roundf.c" + +#endif -- 2.39.2
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.