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authorGabriel F. T. Gomes <gabrielftg@linux.ibm.com>2019-06-27 17:43:44 -0300
committerGabriel F. T. Gomes <gabrielftg@linux.ibm.com>2019-06-27 17:51:59 -0300
commit1626f499d159f17d5d99dc41497b52074f3850df (patch)
treedd408298c1a3b38707ce77e3b0cebae505c156c0 /stdio-common/printf-parse.h
parenta620bd7935c4b2dc94e472e62bd9a5c9434ea7b7 (diff)
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Prepare vfprintf to use __printf_fp/__printf_fphex with float128 arg
On powerpc64le, long double can currently take two formats: the same as double (-mlong-double-64) or IBM Extended Precision (default with -mlong-double-128 or explicitly with -mabi=ibmlongdouble). The internal implementation of printf-like functions is aware of these possibilities and properly parses floating-point values from the variable arguments, before making calls to __printf_fp and __printf_fphex. These functions are also aware of the format possibilities and know how to convert both formats to string. When library support for TS 18661-3 was added to glibc, __printf_fp and __printf_fphex were extended with support for an additional type (__float128/_Float128) with a different format (binary128). Now that powerpc64le is getting support for its third long double format, and taking into account that this format is the same as the format of __float128/_Float128, this patch extends __vfprintf_internal to properly call __printf_fp and __printf_fphex with this new format. Tested for powerpc64le (with additional patches to actually enable the use of these preparations) and for x86_64. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'stdio-common/printf-parse.h')
-rw-r--r--stdio-common/printf-parse.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/stdio-common/printf-parse.h b/stdio-common/printf-parse.h
index 3975086..00f3280 100644
--- a/stdio-common/printf-parse.h
+++ b/stdio-common/printf-parse.h
@@ -57,6 +57,9 @@ union printf_arg
unsigned long long int pa_u_long_long_int;
double pa_double;
long double pa_long_double;
+#if __HAVE_FLOAT128_UNLIKE_LDBL
+ _Float128 pa_float128;
+#endif
const char *pa_string;
const wchar_t *pa_wstring;
void *pa_pointer;