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Diffstat (limited to 'sysdeps/m68k/m680x0/fpu/s_modf_template.c')
-rw-r--r--sysdeps/m68k/m680x0/fpu/s_modf_template.c43
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diff --git a/sysdeps/m68k/m680x0/fpu/s_modf_template.c b/sysdeps/m68k/m680x0/fpu/s_modf_template.c
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index 0000000000..a6f51bd6d7
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+++ b/sysdeps/m68k/m680x0/fpu/s_modf_template.c
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+/* Implement modf for m68k.
+ Copyright (C) 1996-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <math.h>
+#include "mathimpl.h"
+
+FLOAT
+M_DECL_FUNC (__modf) (FLOAT x, FLOAT *iptr)
+{
+ FLOAT x_int, result;
+ unsigned long x_cond;
+
+ __asm ("fintrz%.x %1, %0" : "=f" (x_int) : "f" (x));
+ *iptr = x_int;
+ x_cond = __m81_test (x);
+ if (x_cond & __M81_COND_INF)
+ {
+ result = 0;
+ if (x_cond & __M81_COND_NEG)
+ result = -result;
+ }
+ else if (x_cond & __M81_COND_ZERO)
+ result = x;
+ else
+ result = x - x_int;
+ return result;
+}
+declare_mgen_alias (__modf, modf)