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-rw-r--r--src/internal/libm.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/internal/libm.h b/src/internal/libm.h
index 64cc8388..52ac61ec 100644
--- a/src/internal/libm.h
+++ b/src/internal/libm.h
@@ -17,6 +17,7 @@
#include <float.h>
#include <math.h>
#include <complex.h>
+#include <endian.h>
#include "longdbl.h"
@@ -32,6 +33,33 @@ union dshape {
uint64_t bits;
};
+#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
+#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __LITTLE_ENDIAN
+union ldshape {
+ long double f;
+ struct {
+ uint64_t m;
+ uint16_t se;
+ } i;
+};
+#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384 && __BYTE_ORDER == __LITTLE_ENDIAN
+union ldshape {
+ long double f;
+ struct {
+ uint64_t lo;
+ uint32_t mid;
+ uint16_t top;
+ uint16_t se;
+ } i;
+ struct {
+ uint64_t lo;
+ uint64_t hi;
+ } i2;
+};
+#else
+#error Unsupported long double representation
+#endif
+
#define FORCE_EVAL(x) do { \
if (sizeof(x) == sizeof(float)) { \
volatile float __x; \