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-rw-r--r--sysdeps/libm-i387/e_exp.S2
-rw-r--r--sysdeps/libm-i387/e_expf.S2
-rw-r--r--sysdeps/libm-i387/e_expl.S2
-rw-r--r--sysdeps/libm-i387/s_expm1.S12
-rw-r--r--sysdeps/libm-i387/s_expm1f.S12
-rw-r--r--sysdeps/libm-i387/s_expm1l.S12
6 files changed, 24 insertions, 18 deletions
diff --git a/sysdeps/libm-i387/e_exp.S b/sysdeps/libm-i387/e_exp.S
index 3c9d45b746..e76b9c63df 100644
--- a/sysdeps/libm-i387/e_exp.S
+++ b/sysdeps/libm-i387/e_exp.S
@@ -24,7 +24,7 @@ ENTRY(__ieee754_exp)
 	fmulp				/* x * log2(e) */
 	fstl	%st(1)
 	frndint				/* int(x * log2(e)) */
-	fsub	%st,%st(1)		/* fract(x * log2(e)) */
+	fsubr	%st,%st(1)		/* fract(x * log2(e)) */
 	fxch
 	f2xm1				/* 2^(fract(x * log2(e))) - 1 */
 	fld1
diff --git a/sysdeps/libm-i387/e_expf.S b/sysdeps/libm-i387/e_expf.S
index cd8dc7f0b9..9a669cf8d4 100644
--- a/sysdeps/libm-i387/e_expf.S
+++ b/sysdeps/libm-i387/e_expf.S
@@ -25,7 +25,7 @@ ENTRY(__ieee754_expf)
 	fmulp				/* x * log2(e) */
 	fstl	%st(1)
 	frndint				/* int(x * log2(e)) */
-	fsub	%st,%st(1)		/* fract(x * log2(e)) */
+	fsubr	%st,%st(1)		/* fract(x * log2(e)) */
 	fxch
 	f2xm1				/* 2^(fract(x * log2(e))) - 1 */
 	fld1
diff --git a/sysdeps/libm-i387/e_expl.S b/sysdeps/libm-i387/e_expl.S
index e398a90ef6..e83d30640d 100644
--- a/sysdeps/libm-i387/e_expl.S
+++ b/sysdeps/libm-i387/e_expl.S
@@ -26,7 +26,7 @@ ENTRY(__ieee754_expl)
 	fmulp				/* x * log2(e) */
 	fstl	%st(1)
 	frndint				/* int(x * log2(e)) */
-	fsub	%st,%st(1)		/* fract(x * log2(e)) */
+	fsubr	%st,%st(1)		/* fract(x * log2(e)) */
 	fxch
 	f2xm1				/* 2^(fract(x * log2(e))) - 1 */
 	fld1
diff --git a/sysdeps/libm-i387/s_expm1.S b/sysdeps/libm-i387/s_expm1.S
index 2685d6e770..78e8013b7e 100644
--- a/sysdeps/libm-i387/s_expm1.S
+++ b/sysdeps/libm-i387/s_expm1.S
@@ -1,8 +1,9 @@
 /* ix87 specific implementation of exp(x)-1.
-   Copyright (C) 1996 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
    Based on code by John C. Bowman <bowman@ipp-garching.mpg.de>.
+   Corrections by H.J. Lu (hjl@gnu.ai.mit.edu), 1997.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -64,15 +65,16 @@ ENTRY(__expm1)
 	fmulp			// log2(e)*x
 	fld	%st		// log2(e)*x : log2(e)*x
 	frndint			// int(log2(e)*x) : log2(e)*x
-	fsub	%st, %st(1)	// int(log2(e)*x) : fract(log2(e)*x)
+	fsubr	%st, %st(1)	// int(log2(e)*x) : fract(log2(e)*x)
 	fxch			// fract(log2(e)*x) : int(log2(e)*x)
 	f2xm1			// 2^fract(log2(e)*x)-1 : int(log2(e)*x)
 	fscale			// 2^(log2(e)*x)-2^int(log2(e)*x) : int(log2(e)*x)
 	fxch			// int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
 	fldl	MO(one)		// 1 : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
-	fscale			// 2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
-	faddp			// 2^(log2(e)*x)
-	fsubl	MO(one)
+	fscale			// 2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fsubrl	MO(one)		// 1-2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fstp	%st(1)		// 1-2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fsubrp	%st, %st(1)	// 2^(log2(e)*x)
 	ret
 
 2:	testl	$0x200, %eax	// Test sign.
diff --git a/sysdeps/libm-i387/s_expm1f.S b/sysdeps/libm-i387/s_expm1f.S
index 85c3c849f1..00f1562e73 100644
--- a/sysdeps/libm-i387/s_expm1f.S
+++ b/sysdeps/libm-i387/s_expm1f.S
@@ -1,8 +1,9 @@
 /* ix87 specific implementation of exp(x)-1.
-   Copyright (C) 1996 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
    Based on code by John C. Bowman <bowman@ipp-garching.mpg.de>.
+   Corrections by H.J. Lu (hjl@gnu.ai.mit.edu), 1997.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -64,15 +65,16 @@ ENTRY(__expm1f)
 	fmulp			// log2(e)*x
 	fld	%st		// log2(e)*x : log2(e)*x
 	frndint			// int(log2(e)*x) : log2(e)*x
-	fsub	%st, %st(1)	// int(log2(e)*x) : fract(log2(e)*x)
+	fsubr	%st, %st(1)	// int(log2(e)*x) : fract(log2(e)*x)
 	fxch			// fract(log2(e)*x) : int(log2(e)*x)
 	f2xm1			// 2^fract(log2(e)*x)-1 : int(log2(e)*x)
 	fscale			// 2^(log2(e)*x)-2^int(log2(e)*x) : int(log2(e)*x)
 	fxch			// int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
 	fldl	MO(one)		// 1 : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
-	fscale			// 2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
-	faddp			// 2^(log2(e)*x)
-	fsubl	MO(one)
+	fscale			// 2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fsubrl	MO(one)		// 1-2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fstp	%st(1)		// 1-2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fsubrp	%st, %st(1)	// 2^(log2(e)*x)
 	ret
 
 2:	testl	$0x200, %eax	// Test sign.
diff --git a/sysdeps/libm-i387/s_expm1l.S b/sysdeps/libm-i387/s_expm1l.S
index 45aa753094..b7e6b36d39 100644
--- a/sysdeps/libm-i387/s_expm1l.S
+++ b/sysdeps/libm-i387/s_expm1l.S
@@ -1,8 +1,9 @@
 /* ix87 specific implementation of exp(x)-1.
-   Copyright (C) 1996 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
    Based on code by John C. Bowman <bowman@ipp-garching.mpg.de>.
+   Corrections by H.J. Lu (hjl@gnu.ai.mit.edu), 1997.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -64,15 +65,16 @@ ENTRY(__expm1l)
 	fmulp			// log2(e)*x
 	fld	%st		// log2(e)*x : log2(e)*x
 	frndint			// int(log2(e)*x) : log2(e)*x
-	fsub	%st, %st(1)	// int(log2(e)*x) : fract(log2(e)*x)
+	fsubr	%st, %st(1)	// int(log2(e)*x) : fract(log2(e)*x)
 	fxch			// fract(log2(e)*x) : int(log2(e)*x)
 	f2xm1			// 2^fract(log2(e)*x)-1 : int(log2(e)*x)
 	fscale			// 2^(log2(e)*x)-2^int(log2(e)*x) : int(log2(e)*x)
 	fxch			// int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
 	fldl	MO(one)		// 1 : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
-	fscale			// 2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
-	faddp			// 2^(log2(e)*x)
-	fsubl	MO(one)
+	fscale			// 2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fsubrl	MO(one)		// 1-2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fstp	%st(1)		// 1-2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
+	fsubrp	%st, %st(1)	// 2^(log2(e)*x)
 	ret
 
 2:	testl	$0x200, %eax	// Test sign.
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-17 13:34:53 +0000