diff options
Diffstat (limited to '3/11_floating_point/56_simplefun.c')
| -rw-r--r-- | 3/11_floating_point/56_simplefun.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/3/11_floating_point/56_simplefun.c b/3/11_floating_point/56_simplefun.c new file mode 100644 index 0000000..66569fa --- /dev/null +++ b/3/11_floating_point/56_simplefun.c @@ -0,0 +1,25 @@ +#define EXPR + +double simplefun(double x) { + return EXPR(x); +} +// A +// vmovsd .LC1(%rip), %xmm1 +// vandpd %xmm1, xmm0, xmm0 +// .LC1: +// 1111111111111111111111111111111111111111111111111111 11111111111 0 +// +// Checks if any bit is set in the arg by anding with all ones +// +// +// B +// vxorpd %xmm0, %xmm0, %xmm0 +// +// Sets the argument to zero +// +// C +// vmovsd .LC2(%rip), %xmm1 +// vxorpd xmm1, %xmm0, %xmm0 +// 10000000000000000000000000000000 00000000000000000000000000000000 +// +// Flipping the sign bit |