Faster determination of the sign of a number.

[pspp] / ChangeLog

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+2007-04-06  Bruno Haible  <bruno@clisp.org>
+
+       * lib/vasnprintf.c: Include <math.h>. Don't include float+.h.
+       (VASNPRINTF): Use signbit for faster determination whether to print a
+       minus sign.
+       * modules/vasnprintf (Files): Remove lib/float+.h.
+       * modules/fprintf-posix (Depends-on): Add signbit.
+       * modules/snprintf-posix (Depends-on): Likewise.
+       * modules/sprintf-posix (Depends-on): Likewise.
+       * modules/vasnprintf-posix (Depends-on): Likewise.
+       * modules/vasprintf-posix (Depends-on): Likewise.
+       * modules/vfprintf-posix (Depends-on): Likewise.
+       * modules/vsnprintf-posix (Depends-on): Likewise.
+       * modules/vsprintf-posix (Depends-on): Likewise.
+
 2007-04-06  Bruno Haible  <bruno@clisp.org>
 
        * tests/test-frexp.c (main): Test also the sign bit of zero results.