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# DP: This patch was converted from alpha-ieee-doc.diff
# DP: Original comment:
# DP:
# DP: #212912
# DP: on alpha-linux, make -mieee default and add -mieee-disable switch
# DP: to turn default off (doc patch)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -9980,6 +9980,13 @@ able to correctly support denormalized numbers and exceptional IEEE
values such as not-a-number and plus/minus infinity. Other Alpha
compilers call this option @option{-ieee_with_no_inexact}.
+DEBIAN SPECIFIC: This option is on by default for alpha-linux-gnu, unless
+@option{-ffinite-math-only} (which is part of the @option{-ffast-math}
+set) is specified, because the software functions in the GNU libc math
+libraries generate denormalized numbers, NaNs, and infs (all of which
+will cause a programs to SIGFPE when it attempts to use the results without
+@option{-mieee}).
+
@item -mieee-with-inexact
@opindex mieee-with-inexact
This is like @option{-mieee} except the generated code also maintains
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