diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/fpu/s_truncf.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/fpu/s_truncf.S | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_truncf.S b/sysdeps/powerpc/powerpc64/fpu/s_truncf.S index 15f53da8ca..b38b722a6f 100644 --- a/sysdeps/powerpc/powerpc64/fpu/s_truncf.S +++ b/sysdeps/powerpc/powerpc64/fpu/s_truncf.S @@ -21,7 +21,9 @@ .section ".toc","aw" .LC0: /* 2**23 */ - .tc FD_4b000000_0[TC],0x4b00000000000000 + .tc FD_41600000_0[TC],0x4160000000000000 +.LC2: /* -0.0 */ + .tc FD_80000000_0[TC],0x8000000000000000 .section ".text" /* float [fp1] truncf (float x [fp1]) @@ -31,10 +33,10 @@ We set "round toward Zero" mode and trunc by adding +-2**23 then subtracting +-2**23. */ -EALIGN (__truncf, 4, 0) +ENTRY (__truncf) CALL_MCOUNT 0 mffs fp11 /* Save current FPU rounding mode. */ - lfs fp13,.LC0@toc(2) + lfd fp13,.LC0@toc(2) fabs fp0,fp1 fsubs fp12,fp13,fp13 /* generate 0.0 */ fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO23) */ @@ -44,18 +46,17 @@ EALIGN (__truncf, 4, 0) ble- cr6,.L4 fadds fp1,fp1,fp13 /* x+= TWO23; */ fsubs fp1,fp1,fp13 /* x-= TWO23; */ - fabs fp1,fp1 /* if (x == 0.0) */ - /* x = 0.0; */ +.L9: mtfsf 0x01,fp11 /* restore previous truncing mode. */ blr .L4: bge- cr6,.L9 /* if (x < 0.0) */ fsubs fp1,fp1,fp13 /* x-= TWO23; */ fadds fp1,fp1,fp13 /* x+= TWO23; */ - fnabs fp1,fp1 /* if (x == 0.0) */ - /* x = -0.0; */ -.L9: + fcmpu cr5,fp1,fp12 /* if (x > 0.0) */ mtfsf 0x01,fp11 /* restore previous rounding mode. */ + bnelr+ cr5 + lfd fp1,.LC2@toc(2) /* x must be -0.0 for the 0.0 case. */ blr END (__truncf) |