summaryrefslogtreecommitdiff
path: root/sysdeps/m68k/fpu
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/m68k/fpu')
-rw-r--r--sysdeps/m68k/fpu/bits/mathdef.h6
-rw-r--r--sysdeps/m68k/fpu/bits/mathinline.h23
-rw-r--r--sysdeps/m68k/fpu/e_scalb.c63
-rw-r--r--sysdeps/m68k/fpu/e_scalbf.c5
-rw-r--r--sysdeps/m68k/fpu/e_scalbl.c5
-rw-r--r--sysdeps/m68k/fpu/s_scalbn.c2
6 files changed, 82 insertions, 22 deletions
diff --git a/sysdeps/m68k/fpu/bits/mathdef.h b/sysdeps/m68k/fpu/bits/mathdef.h
index 4d07176405..4eaa58a3a9 100644
--- a/sysdeps/m68k/fpu/bits/mathdef.h
+++ b/sysdeps/m68k/fpu/bits/mathdef.h
@@ -17,7 +17,7 @@
Boston, MA 02111-1307, USA. */
#ifndef _MATH_H
-#error "Never use <bits/mathdef.h> directly; include <math.h> instead"
+# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
#endif
@@ -34,3 +34,7 @@ typedef long double double_t; /* `double' expressions are evaluated as
/* Define `INFINITY' as value of type `float_t'. */
#define INFINITY HUGE_VALL
+
+/* The values returned by `ilogb' for 0 and NaN respectively. */
+#define FP_ILOGB0 0
+#define FP_ILOGBNAN 0x7fffffff
diff --git a/sysdeps/m68k/fpu/bits/mathinline.h b/sysdeps/m68k/fpu/bits/mathinline.h
index bdeaa9efb0..8899b752ff 100644
--- a/sysdeps/m68k/fpu/bits/mathinline.h
+++ b/sysdeps/m68k/fpu/bits/mathinline.h
@@ -138,14 +138,6 @@ __m81_defun (float_type, __CONCAT(__ieee754_fmod,s), \
float_type __result; \
__asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x)); \
return __result; \
-} \
- \
-__m81_defun (float_type, __CONCAT(__ieee754_scalb,s), \
- (float_type __x, float_type __n)) \
-{ \
- float_type __result; \
- __asm ("fscale%.x %1, %0" : "=f" (__result) : "f" (__n), "0" (__x)); \
- return __result; \
}
__internal_inline_functions (double,)
@@ -268,13 +260,16 @@ __m81_defun (int, __CONCAT(__signbit,s), (float_type __value)) \
__m81_defun (int, __CONCAT(__ilogb,s), (float_type __x)) \
{ \
float_type __result; \
- if (__x == 0.0) \
- return 0x80000001; \
+ if (__m81_u(__CONCAT(__isnan,s)) (__x)) \
+ /* The stupid standard requires us to return a specific value where \
+ it would depend on the bitpattern of the NaN. */ \
+ return 0x7fffffff; \
__asm("fgetexp%.x %1, %0" : "=f" (__result) : "f" (__x)); \
return (int) __result; \
} \
\
-__m81_defun (float_type, __CONCAT(__scalbn,s), (float_type __x, int __n)) \
+__m81_defun (float_type, __CONCAT(__scalbn,s), \
+ (float_type __x, long int __n)) \
{ \
float_type __result; \
__asm ("fscale%.l %1, %0" : "=f" (__result) : "dmi" (__n), "0" (__x)); \
@@ -340,7 +335,7 @@ __inline_forward_c(double,ceil, (double __x), (__x))
#ifdef __USE_MISC
__inline_forward_c(int,isinf, (double __value), (__value))
__inline_forward_c(int,finite, (double __value), (__value))
-__inline_forward_c(double,scalbn, (double __x, int __n), (__x, __n))
+__inline_forward_c(double,scalbn, (double __x, long int __n), (__x, __n))
#endif
#if defined __USE_MISC || defined __USE_XOPEN
#ifndef __USE_ISOC9X /* Conflict with macro of same name. */
@@ -365,7 +360,7 @@ __inline_forward_c(float,ceilf, (float __x), (__x))
#ifdef __USE_MISC
__inline_forward_c(int,isinff, (float __value), (__value))
__inline_forward_c(int,finitef, (float __value), (__value))
-__inline_forward_c(float,scalbnf, (float __x, int __n), (__x, __n))
+__inline_forward_c(float,scalbnf, (float __x, long int __n), (__x, __n))
__inline_forward_c(int,isnanf, (float __value), (__value))
__inline_forward_c(int,ilogbf, (float __value), (__value))
#endif
@@ -384,7 +379,7 @@ __inline_forward_c(long double,ceill, (long double __x), (__x))
#ifdef __USE_MISC
__inline_forward_c(int,isinfl, (long double __value), (__value))
__inline_forward_c(int,finitel, (long double __value), (__value))
-__inline_forward_c(long double,scalbnl, (long double __x, int __n),
+__inline_forward_c(long double,scalbnl, (long double __x, long int __n),
(__x, __n))
__inline_forward_c(int,isnanl, (long double __value), (__value))
__inline_forward_c(int,ilogbl, (long double __value), (__value))
diff --git a/sysdeps/m68k/fpu/e_scalb.c b/sysdeps/m68k/fpu/e_scalb.c
index 51d9beefa6..a5923ab450 100644
--- a/sysdeps/m68k/fpu/e_scalb.c
+++ b/sysdeps/m68k/fpu/e_scalb.c
@@ -1,2 +1,61 @@
-#define FUNC __ieee754_scalb
-#include <e_fmod.c>
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
+
+ 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
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#define __LIBC_M81_MATH_INLINES
+#include <math.h>
+
+#ifndef SUFF
+#define SUFF
+#endif
+#ifndef float_type
+#define float_type double
+#endif
+
+#define CONCATX(a,b) __CONCAT(a,b)
+#define s(name) CONCATX(name,SUFF)
+#define m81(func) __m81_u(s(func))
+
+float_type
+s(__ieee754_scalb) (float_type x, float_type fn)
+{
+ float_type retval;
+ unsigned long x_cond = __m81_test (x);
+ unsigned long fn_cond = __m81_test (fn);
+
+ if ((x_cond | fn_cond) & __M81_COND_NAN)
+ return x * fn;
+
+ if (fn_cond & __M81_COND_INF)
+ {
+ if (!(fn_cond & __M81_COND_NEG))
+ return x * fn;
+ else if (x_cond & __M81_COND_ZERO)
+ return x;
+ else if (x_cond & __M81_COND_INF)
+ return 0.0/0.0;
+ else
+ return x / -fn;
+ }
+
+ if (m81(__rint) (fn) != fn)
+ return 0.0/0.0;
+
+ __asm ("fscale%.x %1, %0" : "=f" (retval) : "f" (fn), "0" (x));
+ return retval;
+}
diff --git a/sysdeps/m68k/fpu/e_scalbf.c b/sysdeps/m68k/fpu/e_scalbf.c
index 1d2beae9ee..7943571246 100644
--- a/sysdeps/m68k/fpu/e_scalbf.c
+++ b/sysdeps/m68k/fpu/e_scalbf.c
@@ -1,2 +1,3 @@
-#define FUNC __ieee754_scalbf
-#include <e_fmodf.c>
+#define SUFF f
+#define float_type float
+#include <e_scalb.c>
diff --git a/sysdeps/m68k/fpu/e_scalbl.c b/sysdeps/m68k/fpu/e_scalbl.c
index 92ab7a4ad1..35fb2dc0ed 100644
--- a/sysdeps/m68k/fpu/e_scalbl.c
+++ b/sysdeps/m68k/fpu/e_scalbl.c
@@ -1,2 +1,3 @@
-#define FUNC __ieee754_scalbl
-#include <e_fmodl.c>
+#define SUFF l
+#define float_type long double
+#include <e_scalb.c>
diff --git a/sysdeps/m68k/fpu/s_scalbn.c b/sysdeps/m68k/fpu/s_scalbn.c
index 1d43a75de0..d3ba27fa46 100644
--- a/sysdeps/m68k/fpu/s_scalbn.c
+++ b/sysdeps/m68k/fpu/s_scalbn.c
@@ -31,7 +31,7 @@
float_type
__CONCATX(__,FUNC) (x, exp)
float_type x;
- int exp;
+ long int exp;
{
return __m81_u(__CONCATX(__,FUNC))(x, exp);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-13 03:05:52 +0000