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Diffstat (limited to 'arch/mips/math-emu/dp_simple.c')
-rw-r--r--arch/mips/math-emu/dp_simple.c55
1 files changed, 19 insertions, 36 deletions
diff --git a/arch/mips/math-emu/dp_simple.c b/arch/mips/math-emu/dp_simple.c
index bccbe90efceb..926d56bf37f2 100644
--- a/arch/mips/math-emu/dp_simple.c
+++ b/arch/mips/math-emu/dp_simple.c
@@ -23,44 +23,27 @@
union ieee754dp ieee754dp_neg(union ieee754dp x)
{
- COMPXDP;
-
- EXPLODEXDP;
- ieee754_clearcx();
- FLUSHXDP;
-
- /*
- * Invert the sign ALWAYS to prevent an endless recursion on
- * pow() in libc.
- */
- /* quick fix up */
- DPSIGN(x) ^= 1;
-
- if (xc == IEEE754_CLASS_SNAN) {
- union ieee754dp y = ieee754dp_indef();
- ieee754_setcx(IEEE754_INVALID_OPERATION);
- DPSIGN(y) = DPSIGN(x);
- return ieee754dp_nanxcpt(y);
- }
-
- return x;
+ unsigned int oldrm;
+ union ieee754dp y;
+
+ oldrm = ieee754_csr.rm;
+ ieee754_csr.rm = FPU_CSR_RD;
+ y = ieee754dp_sub(ieee754dp_zero(0), x);
+ ieee754_csr.rm = oldrm;
+ return y;
}
union ieee754dp ieee754dp_abs(union ieee754dp x)
{
- COMPXDP;
-
- EXPLODEXDP;
- ieee754_clearcx();
- FLUSHXDP;
-
- /* Clear sign ALWAYS, irrespective of NaN */
- DPSIGN(x) = 0;
-
- if (xc == IEEE754_CLASS_SNAN) {
- ieee754_setcx(IEEE754_INVALID_OPERATION);
- return ieee754dp_nanxcpt(ieee754dp_indef());
- }
-
- return x;
+ unsigned int oldrm;
+ union ieee754dp y;
+
+ oldrm = ieee754_csr.rm;
+ ieee754_csr.rm = FPU_CSR_RD;
+ if (DPSIGN(x))
+ y = ieee754dp_sub(ieee754dp_zero(0), x);
+ else
+ y = ieee754dp_add(ieee754dp_zero(0), x);
+ ieee754_csr.rm = oldrm;
+ return y;
}