--------------Boundary-00=_TTI82885MRDL416ADIVM
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 8bit

Start with a simple C program:

#include <stdio.h>
#include <values.h>

int main()
{
  float val = 1.40129846432481707e-45f;
  double dbl = val;

  printf("MINFLOAT is %e(flt)\n", MINFLOAT );
  printf("val is %e(flt) %g(dbl)\n", val, val);
}

Compile it:

	gcc -mieee -o ieee ieee.c

Results with the patch:

	MINFLOAT is 1.175494e-38(flt)
	val is 1.401298e-45(flt) 1.4013e-45(dbl)

Results without the patch:

	MINFLOAT is 1.175494e-38(flt)
	val is 2.652495e-315(flt) 2.65249e-315(dbl)

Patch follows inline & attached:

#--- linux-2.4.18-orig/arch/alpha/math-emu/math.c        Fri Sep 22 16:54:09 2000
#+++ linux-2.4.18/arch/alpha/math-emu/math.c     Mon Mar 18 18:26:53 2002
#@@ -220,12 +220,12 @@
#                                FP_CONV(S,D,1,1,SR,DB);
#                                goto pack_s;
#                        } else {
#-                               /* CVTST need do nothing else but copy the
#-                                  bits and repack.  */
#-                               DR_c = DB_c;
#-                               DR_s = DB_s;
#-                               DR_e = DB_e;
#-                               DR_f = DB_f;
#+                               vb = alpha_read_fp_reg_s(fb);
#+                               FP_UNPACK_SP(SB, &vb);
#+                               DR_c = SB_c;
#+                               DR_s = SB_s;
#+                               DR_e = SB_e;
#+                               DR_f = SB_f << ( 52 - 23 );
#                                goto pack_d;
#                        }
 
--- linux-2.4.19-pre4/arch/alpha/math-emu/math.c	Thu Mar 28 22:40:52 2002
+++ linux-2.4.19-pre4/arch/alpha/math-emu/math.c	Thu Mar 28 22:42:42 2002
@@ -220,12 +220,12 @@
 				FP_CONV(S,D,1,1,SR,DB);
 				goto pack_s;
 			} else {
-				/* CVTST need do nothing else but copy the
-				   bits and repack.  */
-				DR_c = DB_c;
-				DR_s = DB_s;
-				DR_e = DB_e;
-				DR_f = DB_f;
+				vb = alpha_read_fp_reg_s(fb);
+				FP_UNPACK_SP(SB, &vb);
+				DR_c = SB_c;
+				DR_s = SB_s;
+				DR_e = SB_e;
+				DR_f = SB_f << ( 52 - 23 );
 				goto pack_d;
 			}