[PATCH 1/1] RISC-V: Use the new libm code if possible
Hau Hsu <[email protected]>
| Newsgroups | gmane.comp.lib.newlib |
|---|---|
| Message-ID | <[email protected]> |
Set __OBSOLETE_MATH_DEFAULT to 0 if 'd' extension is supported (i.e. __riscv_flen == 64). Base on the comment for __OBSOLETE_MATH_DEFAULT: > ... it assumes that the toolchain has ISO C99 support (hexfloat > literals, standard fenv semantics), the target has IEEE-754 conforming > binary32 float and binary64 double (not mixed endian) representation, > standard SNaN representation, double and single precision arithmetics > has similar latency and it has no legacy SVID matherr support, only > POSIX errno and fenv exception based error handling. Signed-off-by: Hau Hsu <[email protected]> --- newlib/libc/include/machine/ieeefp.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/newlib/libc/include/machine/ieeefp.h b/newlib/libc/include/machine/ieeefp.h index 9bb8af02f..a29557a6d 100644 --- a/newlib/libc/include/machine/ieeefp.h +++ b/newlib/libc/include/machine/ieeefp.h @@ -221,6 +221,11 @@ #ifdef __riscv_flen # define _SUPPORTS_ERREXCEPT #endif +#if __riscv_flen == 64 +# define __OBSOLETE_MATH_DEFAULT 0 +#else +# define __OBSOLETE_MATH_DEFAULT 1 +#endif #endif #ifdef __i960__ -- 2.39.0