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authorMystery Man <unknown@mandriva.org>2003-08-20 07:37:27 +0000
committerMystery Man <unknown@mandriva.org>2003-08-20 07:37:27 +0000
commit7f2ac73888b8ef372ea597049981b27e7d810ac2 (patch)
tree354132889b63bbe5f446cb82869b3c3367135a80 /mdk-stage1/dietlibc/i386/ipow.S
parent327bd24f8e4291bd1882de1990dd7339f781a9cb (diff)
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Diffstat (limited to 'mdk-stage1/dietlibc/i386/ipow.S')
-rw-r--r--mdk-stage1/dietlibc/i386/ipow.S27
1 files changed, 27 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/i386/ipow.S b/mdk-stage1/dietlibc/i386/ipow.S
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index 000000000..cca6a0ce1
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+#
+# This is not standard, but often you only need such this function
+# which is much shorter than the generic pow() function.
+#
+# double ipow ( double mant, int expo );
+#
+
+.text
+.global ipow
+.type ipow,@function
+
+ipow: fld1
+ movl 12(%esp),%ecx
+ fldl 4(%esp)
+ and %ecx,%ecx
+ jns .Lstart
+ negl %ecx
+ fdivr %st(1),%st(0)
+ jmp .Lstart
+
+.Lnext: fmul %st(0),%st(0)
+.Lstart:shrl %ecx
+ jnc .Lnomul
+ fmul %st(0),%st(1)
+.Lnomul:jnz .Lnext
+ fcomp
+ ret