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authorGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2016-11-03 12:26:52 -0200
committerGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2017-06-07 17:03:43 -0300
commit32bf1d09dadee5b60df869ed3567a2b12c04e3fc (patch)
tree35384058bf2d5f1f05b893b418a7f339f704629f /include
parent82c19bdfe39164fda779c79a925c2050b19e421b (diff)
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float128: Add conversion from float128 to mpn
Reuse the code for __mpn_extract_long_double to implement
__mpn_extract_float128.

	* include/gmp.h: Include bits/floatn.h
	(__mpn_extract_float128): Declare when __HAVE_DISTINCT_FLOAT128 is 1.
	* stdlib/gmp-impl.h: Also check if alloca is not defined before
	including stack-alloc.h.  It could have been defined by other header
	which not necessarily defines HAVE_ALLOCA.
	* sysdeps/ieee754/float128/Makefile: New file.
	* sysdeps/ieee754/float128/float1282mpn.c: New file.
	* sysdeps/ieee754/float128/float128_private.h: Include gmp.h before
	redefining __mpn_extract_long_double to __mpn_extract_float128, then
	redefine __mpn_extract_long_double to __mpn_extract_float128.
	* sysdeps/ieee754/ldbl-128/ldbl2mpn.c: Replace long double with
	_Float128 to allow float128_private.h overrides.
Diffstat (limited to 'include')
-rw-r--r--include/gmp.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/gmp.h b/include/gmp.h
index b74167097d..e6f635e8d5 100644
--- a/include/gmp.h
+++ b/include/gmp.h
@@ -6,6 +6,8 @@
 
 #include <stdlib/gmp.h>
 
+#include <bits/floatn.h>
+
 /* Now define the internal interfaces.  */
 extern mp_size_t __mpn_extract_double (mp_ptr res_ptr, mp_size_t size,
 				       int *expt, int *is_neg,
@@ -15,6 +17,12 @@ extern mp_size_t __mpn_extract_long_double (mp_ptr res_ptr, mp_size_t size,
 					    int *expt, int *is_neg,
 					    long double value);
 
+#if __HAVE_DISTINCT_FLOAT128
+extern mp_size_t __mpn_extract_float128 (mp_ptr res_ptr, mp_size_t size,
+					 int *expt, int *is_neg,
+					 _Float128 value);
+#endif
+
 extern float __mpn_construct_float (mp_srcptr frac_ptr, int expt, int sign);
 
 extern double __mpn_construct_double (mp_srcptr frac_ptr, int expt,