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-rw-r--r--sysdeps/i386/fpu/e_asin.S34
-rw-r--r--sysdeps/i386/fpu/e_asinf.S34
-rw-r--r--sysdeps/ieee754/dbl-64/e_asin.c12
-rw-r--r--sysdeps/ieee754/flt-32/e_asinf.c6
-rw-r--r--sysdeps/ieee754/ldbl-128/e_asinl.c6
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/e_asinl.c6
-rw-r--r--sysdeps/ieee754/ldbl-96/e_asinl.c6
-rw-r--r--sysdeps/x86_64/fpu/multiarch/e_asin.c1
8 files changed, 102 insertions, 3 deletions
diff --git a/sysdeps/i386/fpu/e_asin.S b/sysdeps/i386/fpu/e_asin.S
index 9a44cb62ac..ea8cb6f1b2 100644
--- a/sysdeps/i386/fpu/e_asin.S
+++ b/sysdeps/i386/fpu/e_asin.S
@@ -7,8 +7,26 @@
 
 RCSID("$NetBSD: e_asin.S,v 1.4 1995/05/08 23:45:40 jtc Exp $")
 
+	.section .rodata.cst8,"aM",@progbits,8
+
+	.p2align 3
+	.type dbl_min,@object
+dbl_min:	.byte 0, 0, 0, 0, 0, 0, 0x10, 0
+	ASM_SIZE_DIRECTIVE(dbl_min)
+
+#ifdef PIC
+# define MO(op) op##@GOTOFF(%ecx)
+#else
+# define MO(op) op
+#endif
+
+	.text
+
 /* asin = atan (x / sqrt((1-x) (1+x))) */
 ENTRY(__ieee754_asin)
+#ifdef  PIC
+	LOAD_PIC_REG (cx)
+#endif
 	fldl	4(%esp)			/* x */
 	fld	%st
 	fld1				/* 1 : x : x */
@@ -18,6 +36,20 @@ ENTRY(__ieee754_asin)
 	fmulp				/* 1 - x^2 */
 	fsqrt				/* sqrt (1 - x^2) */
 	fpatan
-	ret
+	fldl	MO(dbl_min)
+	fld	%st(1)
+	fabs
+	fucompp
+	fnstsw
+	sahf
+	jnc	1f
+	subl	$8, %esp
+	cfi_adjust_cfa_offset (8)
+	fld	%st(0)
+	fmul	%st(0)
+	fstpl	(%esp)
+	addl	$8, %esp
+	cfi_adjust_cfa_offset (-8)
+1:	ret
 END (__ieee754_asin)
 strong_alias (__ieee754_asin, __asin_finite)
diff --git a/sysdeps/i386/fpu/e_asinf.S b/sysdeps/i386/fpu/e_asinf.S
index 5c1065dd4d..f7bda77fa6 100644
--- a/sysdeps/i386/fpu/e_asinf.S
+++ b/sysdeps/i386/fpu/e_asinf.S
@@ -8,8 +8,26 @@
 
 RCSID("$NetBSD: $")
 
+	.section .rodata.cst4,"aM",@progbits,4
+
+	.p2align 2
+	.type flt_min,@object
+flt_min:	.byte 0, 0, 0x80, 0
+	ASM_SIZE_DIRECTIVE(flt_min)
+
+#ifdef PIC
+# define MO(op) op##@GOTOFF(%ecx)
+#else
+# define MO(op) op
+#endif
+
+	.text
+
 /* asin = atan (x / sqrt(1 - x^2)) */
 ENTRY(__ieee754_asinf)
+#ifdef  PIC
+	LOAD_PIC_REG (cx)
+#endif
 	flds	4(%esp)			/* x */
 	fld	%st
 	fmul	%st(0)			/* x^2 */
@@ -17,6 +35,20 @@ ENTRY(__ieee754_asinf)
 	fsubp				/* 1 - x^2 */
 	fsqrt				/* sqrt (1 - x^2) */
 	fpatan
-	ret
+	flds	MO(flt_min)
+	fld	%st(1)
+	fabs
+	fucompp
+	fnstsw
+	sahf
+	jnc	1f
+	subl	$4, %esp
+	cfi_adjust_cfa_offset (4)
+	fld	%st(0)
+	fmul	%st(0)
+	fstps	(%esp)
+	addl	$4, %esp
+	cfi_adjust_cfa_offset (-4)
+1:	ret
 END (__ieee754_asinf)
 strong_alias (__ieee754_asinf, __asinf_finite)
diff --git a/sysdeps/ieee754/dbl-64/e_asin.c b/sysdeps/ieee754/dbl-64/e_asin.c
index e90f47ccc2..b87e557988 100644
--- a/sysdeps/ieee754/dbl-64/e_asin.c
+++ b/sysdeps/ieee754/dbl-64/e_asin.c
@@ -39,6 +39,8 @@
 #include "powtwo.tbl"
 #include "MathLib.h"
 #include "uasncs.h"
+#include <float.h>
+#include <math.h>
 #include <math_private.h>
 
 #ifndef SECTION
@@ -67,7 +69,15 @@ __ieee754_asin(double x){
   m = u.i[HIGH_HALF];
   k = 0x7fffffff&m;              /* no sign */
 
-  if (k < 0x3e500000) return x;  /* for x->0 => sin(x)=x */
+  if (k < 0x3e500000)
+    {
+      if (fabs (x) < DBL_MIN)
+	{
+	  double force_underflow = x * x;
+	  math_force_eval (force_underflow);
+	}
+      return x;  /* for x->0 => sin(x)=x */
+    }
   /*----------------------2^-26 <= |x| < 2^ -3    -----------------*/
   else
   if (k < 0x3fc00000) {
diff --git a/sysdeps/ieee754/flt-32/e_asinf.c b/sysdeps/ieee754/flt-32/e_asinf.c
index 91ca9afd00..00bad4239b 100644
--- a/sysdeps/ieee754/flt-32/e_asinf.c
+++ b/sysdeps/ieee754/flt-32/e_asinf.c
@@ -39,6 +39,7 @@
 static char rcsid[] = "$NetBSD: e_asinf.c,v 1.5 1995/05/12 04:57:25 jtc Exp $";
 #endif
 
+#include <float.h>
 #include <math.h>
 #include <math_private.h>
 
@@ -72,6 +73,11 @@ float __ieee754_asinf(float x)
 	    return (x-x)/(x-x);		/* asin(|x|>1) is NaN */
 	} else if (ix<0x3f000000) {	/* |x|<0.5 */
 	    if(ix<0x32000000) {		/* if |x| < 2**-27 */
+		if (fabsf (x) < FLT_MIN)
+		  {
+		    float force_underflow = x * x;
+		    math_force_eval (force_underflow);
+		  }
 		if(huge+x>one) return x;/* return x with inexact if x!=0*/
 	    } else {
 		t = x*x;
diff --git a/sysdeps/ieee754/ldbl-128/e_asinl.c b/sysdeps/ieee754/ldbl-128/e_asinl.c
index cd1a8da42c..353603d68c 100644
--- a/sysdeps/ieee754/ldbl-128/e_asinl.c
+++ b/sysdeps/ieee754/ldbl-128/e_asinl.c
@@ -59,6 +59,7 @@
  */
 
 
+#include <float.h>
 #include <math.h>
 #include <math_private.h>
 long double sqrtl (long double);
@@ -152,6 +153,11 @@ __ieee754_asinl (long double x)
     {
       if (ix < 0x3fc60000) /* |x| < 2**-57 */
 	{
+	  if (fabsl (x) < LDBL_MIN)
+	    {
+	      long double force_underflow = x * x;
+	      math_force_eval (force_underflow);
+	    }
 	  if (huge + x > one)
 	    return x;		/* return x with inexact if x!=0 */
 	}
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_asinl.c b/sysdeps/ieee754/ldbl-128ibm/e_asinl.c
index dece11875b..00386db04e 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_asinl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_asinl.c
@@ -59,6 +59,7 @@
  */
 
 
+#include <float.h>
 #include <math.h>
 #include <math_private.h>
 long double sqrtl (long double);
@@ -146,6 +147,11 @@ __ieee754_asinl (long double x)
     {
       if (a < 6.938893903907228e-18L) /* |x| < 2**-57 */
 	{
+	  if (fabsl (x) < LDBL_MIN)
+	    {
+	      long double force_underflow = x * x;
+	      math_force_eval (force_underflow);
+	    }
 	  if (huge + x > one)
 	    return x;		/* return x with inexact if x!=0 */
 	}
diff --git a/sysdeps/ieee754/ldbl-96/e_asinl.c b/sysdeps/ieee754/ldbl-96/e_asinl.c
index c1ffa3e0d9..2973bf071b 100644
--- a/sysdeps/ieee754/ldbl-96/e_asinl.c
+++ b/sysdeps/ieee754/ldbl-96/e_asinl.c
@@ -58,6 +58,7 @@
  */
 
 
+#include <float.h>
 #include <math.h>
 #include <math_private.h>
 
@@ -111,6 +112,11 @@ __ieee754_asinl (long double x)
     {				/* |x|<0.5 */
       if (ix < 0x3fde8000)
 	{			/* if |x| < 2**-33 */
+	  if (fabsl (x) < LDBL_MIN)
+	    {
+	      long double force_underflow = x * x;
+	      math_force_eval (force_underflow);
+	    }
 	  if (huge + x > one)
 	    return x;		/* return x with inexact if x!=0 */
 	}
diff --git a/sysdeps/x86_64/fpu/multiarch/e_asin.c b/sysdeps/x86_64/fpu/multiarch/e_asin.c
index e742a9c133..55865c02f3 100644
--- a/sysdeps/x86_64/fpu/multiarch/e_asin.c
+++ b/sysdeps/x86_64/fpu/multiarch/e_asin.c
@@ -1,5 +1,6 @@
 #ifdef HAVE_FMA4_SUPPORT
 # include <init-arch.h>
+# include <math.h>
 # include <math_private.h>
 
 extern double __ieee754_acos_sse2 (double);
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-12-12 16:33:50 +0000