Detect pseudo-denormals on x86 even when cross-compiling.

[gnulib.git] / lib / stdint.in.h

diff --git a/lib/stdint.in.h b/lib/stdint.in.h
index 121118c..3dcd9ba 100644 (file)
--- a/lib/stdint.in.h
+++ b/lib/stdint.in.h
@@ -101,7 +101,10 @@
 #define _STDINT_MAX(signed, bits, zero) \
   ((signed) \
    ? ~ _STDINT_MIN (signed, bits, zero) \
-   : ((((zero) + 1) << ((bits) ? (bits) - 1 : 0)) - 1) * 2 + 1)
+   : /* The expression for the unsigned case.  The subtraction of (signed) \
+       is a nop in the unsigned case and avoids "signed integer overflow" \
+       warnings in the signed case.  */ \
+     ((((zero) + 1) << ((bits) ? (bits) - 1 - (signed) : 0)) - 1) * 2 + 1)
 
 /* 7.18.1.1. Exact-width integer types */
 
@@ -247,6 +250,11 @@
 # define uintmax_t unsigned long int
 #endif
 
+/* Verify that intmax_t and uintmax_t have the same size.  Too much code
+   breaks if this is not the case.  If this check fails, the reason is likely
+   to be found in the autoconf macros.  */
+typedef int _verify_intmax_size[2 * (sizeof (intmax_t) == sizeof (uintmax_t)) - 1];
+
 /* 7.18.2. Limits of specified-width integer types */
 
 #if ! defined __cplusplus || defined __STDC_LIMIT_MACROS