diff options
Diffstat (limited to 'bits')
| -rw-r--r-- | bits/long-double.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/bits/long-double.h b/bits/long-double.h index 6e16447e65..bdde78f49a 100644 --- a/bits/long-double.h +++ b/bits/long-double.h @@ -37,4 +37,17 @@ #ifndef __NO_LONG_DOUBLE_MATH # define __NO_LONG_DOUBLE_MATH 1 #endif -#define __LONG_DOUBLE_USES_FLOAT128 0 + +/* The macro __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI is used to determine the + choice of the underlying ABI of long double. It will always assume + a constant value for each translation unit. + + If the value is non-zero, any API which is parameterized by the long + double type (i.e the scanf/printf family of functions or the explicitly + parameterized math.h functions) will be redirected to a compatible + implementation using _Float128 ABI via symbols suffixed with ieee128. + + The mechanism this macro uses to acquire may be a function + of architecture, or target specific options used to invoke the + compiler. */ +#define __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 0 |