diff options
Diffstat (limited to 'sys/vops/abnek.gx')
| -rw-r--r-- | sys/vops/abnek.gx | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sys/vops/abnek.gx b/sys/vops/abnek.gx new file mode 100644 index 00000000..4643cd89 --- /dev/null +++ b/sys/vops/abnek.gx @@ -0,0 +1,31 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +# ABNEK -- Vector boolean not equals constant. C[i], type INT, is set to 1 if +# A[i] is not equal to B, else C[i] is set to zero. + +procedure abnek$t (a, b, c, npix) + +PIXEL a[ARB] +PIXEL b +int c[ARB] +int npix +int i + +begin + # The case b==0 is perhaps worth optimizing. On many machines this + # will save a memory fetch. + + if (b == 0$f) { + do i = 1, npix + if (a[i] != 0$f) + c[i] = 1 + else + c[i] = 0 + } else { + do i = 1, npix + if (a[i] != b) + c[i] = 1 + else + c[i] = 0 + } +end |