patch-2.1.73 linux/arch/i386/math-emu/reg_constant.c

• Lines: 140
• Date: Tue Dec 9 17:57:09 1997
• Orig file: v2.1.72/linux/arch/i386/math-emu/reg_constant.c
• Orig date: Tue Mar 19 03:45:01 1996

diff -u --recursive --new-file v2.1.72/linux/arch/i386/math-emu/reg_constant.c linux/arch/i386/math-emu/reg_constant.c
@@ -3,9 +3,9 @@
  |                                                                           |
  | All of the constant FPU_REGs                                              |
  |                                                                           |
- | Copyright (C) 1992,1993,1994,1996                                         |
+ | Copyright (C) 1992,1993,1994,1997                                         |
  |                     W. Metzenthen, 22 Parker St, Ormond, Vic 3163,        |
- |                     Australia.  E-mail   billm@jacobi.maths.monash.edu.au |
+ |                     Australia.  E-mail   billm@suburbia.net               |
  |                                                                           |
  |                                                                           |
  +---------------------------------------------------------------------------*/
@@ -17,59 +17,52 @@
 #include "control_w.h"
 
 
-FPU_REG const CONST_1    = { SIGN_POS, TW_Valid, EXP_BIAS,
-			    0x00000000, 0x80000000 };
-FPU_REG const CONST_2    = { SIGN_POS, TW_Valid, EXP_BIAS+1,
-			    0x00000000, 0x80000000 };
-FPU_REG const CONST_HALF = { SIGN_POS, TW_Valid, EXP_BIAS-1,
-			    0x00000000, 0x80000000 };
-FPU_REG const CONST_L2T  = { SIGN_POS, TW_Valid, EXP_BIAS+1,
-			    0xcd1b8afe, 0xd49a784b };
-FPU_REG const CONST_L2E  = { SIGN_POS, TW_Valid, EXP_BIAS,
-			    0x5c17f0bc, 0xb8aa3b29 };
-FPU_REG const CONST_PI   = { SIGN_POS, TW_Valid, EXP_BIAS+1,
-			    0x2168c235, 0xc90fdaa2 };
-FPU_REG const CONST_PI2  = { SIGN_POS, TW_Valid, EXP_BIAS,
-			    0x2168c235, 0xc90fdaa2 };
-FPU_REG const CONST_PI4  = { SIGN_POS, TW_Valid, EXP_BIAS-1,
-			    0x2168c235, 0xc90fdaa2 };
-FPU_REG const CONST_LG2  = { SIGN_POS, TW_Valid, EXP_BIAS-2,
-			    0xfbcff799, 0x9a209a84 };
-FPU_REG const CONST_LN2  = { SIGN_POS, TW_Valid, EXP_BIAS-1,
-			    0xd1cf79ac, 0xb17217f7 };
+#define MAKE_REG(s,e,l,h) { l, h, \
+                            ((EXTENDED_Ebias+(e)) | ((SIGN_##s != 0)*0x8000)) }
+
+FPU_REG const CONST_1    = MAKE_REG(POS, 0, 0x00000000, 0x80000000);
+FPU_REG const CONST_2    = MAKE_REG(POS, 1, 0x00000000, 0x80000000);
+FPU_REG const CONST_HALF = MAKE_REG(POS, -1, 0x00000000, 0x80000000);
+FPU_REG const CONST_L2T  = MAKE_REG(POS, 1, 0xcd1b8afe, 0xd49a784b);
+FPU_REG const CONST_L2E  = MAKE_REG(POS, 0, 0x5c17f0bc, 0xb8aa3b29);
+FPU_REG const CONST_PI   = MAKE_REG(POS, 1, 0x2168c235, 0xc90fdaa2);
+FPU_REG const CONST_PI2  = MAKE_REG(POS, 0, 0x2168c235, 0xc90fdaa2);
+FPU_REG const CONST_PI4  = MAKE_REG(POS, -1, 0x2168c235, 0xc90fdaa2);
+FPU_REG const CONST_LG2  = MAKE_REG(POS, -2, 0xfbcff799, 0x9a209a84);
+FPU_REG const CONST_LN2  = MAKE_REG(POS, -1, 0xd1cf79ac, 0xb17217f7);
 
 /* Extra bits to take pi/2 to more than 128 bits precision. */
-FPU_REG const CONST_PI2extra = { SIGN_NEG, TW_Valid, EXP_BIAS-66,
-			    0xfc8f8cbb, 0xece675d1 };
+FPU_REG const CONST_PI2extra = MAKE_REG(NEG, -66,
+					 0xfc8f8cbb, 0xece675d1);
 
 /* Only the sign (and tag) is used in internal zeroes */
-FPU_REG const CONST_Z    = { SIGN_POS, TW_Zero, EXP_UNDER, 0x0, 0x0 };
+FPU_REG const CONST_Z    = MAKE_REG(POS, EXP_UNDER, 0x0, 0x0);
 
 /* Only the sign and significand (and tag) are used in internal NaNs */
 /* The 80486 never generates one of these 
-FPU_REG const CONST_SNAN = { SIGN_POS, TW_NaN, EXP_OVER, 0x00000001, 0x80000000 };
+FPU_REG const CONST_SNAN = MAKE_REG(POS, EXP_OVER, 0x00000001, 0x80000000);
  */
 /* This is the real indefinite QNaN */
-FPU_REG const CONST_QNaN = { SIGN_NEG, TW_NaN, EXP_OVER, 0x00000000, 0xC0000000 };
+FPU_REG const CONST_QNaN = MAKE_REG(NEG, EXP_OVER, 0x00000000, 0xC0000000);
 
 /* Only the sign (and tag) is used in internal infinities */
-FPU_REG const CONST_INF  = { SIGN_POS, TW_Infinity, EXP_OVER, 0x00000000, 0x80000000 };
-
+FPU_REG const CONST_INF  = MAKE_REG(POS, EXP_OVER, 0x00000000, 0x80000000);
 
 
-static void fld_const(FPU_REG const *c, int adj)
+static void fld_const(FPU_REG const *c, int adj, u_char tag)
 {
   FPU_REG *st_new_ptr;
 
   if ( STACK_OVERFLOW )
     {
-      stack_overflow();
+      FPU_stack_overflow();
       return;
     }
   push();
-  reg_move(c, st_new_ptr);
+  reg_copy(c, st_new_ptr);
   st_new_ptr->sigl += adj;  /* For all our fldxxx constants, we don't need to
 			       borrow or carry. */
+  FPU_settag0(tag);
   clear_C1();
 }
 
@@ -80,37 +73,37 @@
 
 static void fld1(int rc)
 {
-  fld_const(&CONST_1, 0);
+  fld_const(&CONST_1, 0, TAG_Valid);
 }
 
 static void fldl2t(int rc)
 {
-  fld_const(&CONST_L2T, (rc == RC_UP) ? 1 : 0);
+  fld_const(&CONST_L2T, (rc == RC_UP) ? 1 : 0, TAG_Valid);
 }
 
 static void fldl2e(int rc)
 {
-  fld_const(&CONST_L2E, DOWN_OR_CHOP(rc) ? -1 : 0);
+  fld_const(&CONST_L2E, DOWN_OR_CHOP(rc) ? -1 : 0, TAG_Valid);
 }
 
 static void fldpi(int rc)
 {
-  fld_const(&CONST_PI, DOWN_OR_CHOP(rc) ? -1 : 0);
+  fld_const(&CONST_PI, DOWN_OR_CHOP(rc) ? -1 : 0, TAG_Valid);
 }
 
 static void fldlg2(int rc)
 {
-  fld_const(&CONST_LG2, DOWN_OR_CHOP(rc) ? -1 : 0);
+  fld_const(&CONST_LG2, DOWN_OR_CHOP(rc) ? -1 : 0, TAG_Valid);
 }
 
 static void fldln2(int rc)
 {
-  fld_const(&CONST_LN2, DOWN_OR_CHOP(rc) ? -1 : 0);
+  fld_const(&CONST_LN2, DOWN_OR_CHOP(rc) ? -1 : 0, TAG_Valid);
 }
 
 static void fldz(int rc)
 {
-  fld_const(&CONST_Z, 0);
+  fld_const(&CONST_Z, 0, TAG_Zero);
 }
 
 typedef void (*FUNC_RC)(int);