patches/gmp/4.2.2/100-mpf_set_str.c.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Jul 26 09:31:07 2008 +0000 (2008-07-26)
changeset 727 33c246763c8a
permissions -rw-r--r--
Update the PPC sample, add a new softfloat PPC sample, thanks to Thomas JOURDAN.

/trunk/samples/powerpc-unknown-linux-gnu/crosstool.config | 54 42 12 0 ++
/trunk/samples/powerpc-unknown_nofpu-linux-gnu/crosstool.config | 331 331 0 0 +++++++++++++++
/trunk/samples/powerpc-unknown_nofpu-linux-gnu/reported.by | 2 2 0 0 +
3 files changed, 375 insertions(+), 12 deletions(-)
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Original patch from http://gmplib.org/patches/mpf_set_str.c.diff
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Re-diffed to match crosstool-NG conventions.
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diff -dur gmp-4.2.2.orig/mpf/set_str.c gmp-4.2.2/mpf/set_str.c
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--- gmp-4.2.2.orig/mpf/set_str.c	2007-08-30 20:31:40.000000000 +0200
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+++ gmp-4.2.2/mpf/set_str.c	2008-01-28 23:05:29.000000000 +0100
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@@ -271,8 +271,29 @@
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       }
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     if (expptr != 0)
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-      /* FIXME: Should do some error checking here.  */
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-      exp_in_base = strtol (expptr, (char **) 0, exp_base);
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+      {
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+	/* Scan and convert the exponent, in base exp_base.  */
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+	long dig, neg = -(long) ('-' == expptr[0]);
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+	expptr -= neg;			/* conditional increment */
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+	c = (unsigned char) *expptr++;
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+	dig = digit_value[c];
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+	if (dig >= exp_base)
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+	  {
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+	    TMP_FREE;
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+	    return -1;
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+	  }
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+	exp_in_base = dig;
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+	c = (unsigned char) *expptr++;
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+	dig = digit_value[c];
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+	while (dig < exp_base)
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+	  {
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+	    exp_in_base = exp_in_base * exp_base;
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+	    exp_in_base += dig;
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+	    c = (unsigned char) *expptr++;
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+	    dig = digit_value[c];
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+	  }
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+	exp_in_base = (exp_in_base ^ neg) - neg; /* conditional negation */
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+      }
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     else
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       exp_in_base = 0;
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     if (dotpos != 0)