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-rw-r--r--sysdeps/ieee754/huge_val.h40
1 files changed, 23 insertions, 17 deletions
diff --git a/sysdeps/ieee754/huge_val.h b/sysdeps/ieee754/huge_val.h
index 63a8aad9f5..4f8b0a9574 100644
--- a/sysdeps/ieee754/huge_val.h
+++ b/sysdeps/ieee754/huge_val.h
@@ -1,6 +1,6 @@
-/* `HUGE_VAL' constant for IEEE 754 machines (where it is infinity).
+/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
Used by <stdlib.h> and <math.h> functions for overflow.
- Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -44,43 +44,49 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
#endif /* GCC. */
-/* GNU extensions: (float) HUGE_VALf and (long double) HUGE_VALl. */
+/* ISO C 9X extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
-#ifdef __USE_GNU
+#ifdef __USE_ISOC9X
#if __BYTE_ORDER == __BIG_ENDIAN
-#define __HUGE_VALf_bytes { 0x7f, 0x80, 0, 0 }
+#define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define __HUGE_VALf_bytes { 0, 0, 0x80, 0x7f }
+#define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f }
#endif
#define __huge_valf_t union { unsigned char __c[4]; float __f; }
#ifdef __GNUC__
-#define HUGE_VALf (__extension__ \
- ((__huge_valf_t) { __c: __HUGE_VALf_bytes }).__f)
+#define HUGE_VALF (__extension__ \
+ ((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f)
#else /* Not GCC. */
-static __huge_valf_t __huge_valf = { __HUGE_VALf_bytes };
-#define HUGE_VALf (__huge_valf.__f)
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+#define HUGE_VALF (__huge_valf.__f)
#endif /* GCC. */
+
#if __BYTE_ORDER == __BIG_ENDIAN
-#define __HUGE_VALl_bytes { 0x7f, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+#define __HUGE_VALL_bytes { 0x7f, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define __HUGE_VALl_bytes { 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0x7f, 0, 0 }
+#define __HUGE_VALL_bytes { 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0x7f, 0, 0 }
#endif
#define __huge_vall_t union { unsigned char __c[12]; long double __ld; }
#ifdef __GNUC__
-#define HUGE_VALl (__extension__ \
- ((__huge_vall_t) { __c: __HUGE_VALl_bytes }).__ld)
+#define HUGE_VALL (__extension__ \
+ ((__huge_vall_t) { __c: __HUGE_VALL_bytes }).__ld)
#else /* Not GCC. */
-static __huge_vall_t __huge_vall = { __HUGE_VALl_bytes };
-#define HUGE_VALl (__huge_vall.__ld)
+static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
+#define HUGE_VALL (__huge_vall.__ld)
#endif /* GCC. */
-#endif /* __USE_GNU. */
+
+/* Expression representing positive infinity. Here it is the same as
+ HUGE_VALF. */
+#define INFINITY HUGE_VALF
+
+#endif /* __USE_ISOC9X. */
#endif /* huge_val.h */