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-rw-r--r--pkg/images/imutil/src/generic/imadiv.x347
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diff --git a/pkg/images/imutil/src/generic/imadiv.x b/pkg/images/imutil/src/generic/imadiv.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <imhdr.h>
+
+# IMA_DIV -- Image arithmetic division.
+
+
+procedure ima_divs (im_a, im_b, im_c, a, b, c)
+
+pointer im_a, im_b, im_c
+short a, b, c
+
+int len
+pointer im[3], buf[3]
+long v[IM_MAXDIM, 3]
+
+int ima_nls()
+short ima_efncs()
+extern ima_efncs
+
+short divzero
+common /imadcoms/ divzero
+
+begin
+ # Loop through all of the image lines.
+ divzero = c
+ im[1] = im_c
+ len = IM_LEN (im[1], 1)
+ call amovkl (long(1), v, 3 * IM_MAXDIM)
+
+ # If imagea is constant then read imageb and do a vector
+ # reciprical to imagec.
+ if (im_a == NULL) {
+ im[2] = im_b
+ while (ima_nls (im, buf, v, 2) != EOF)
+ call arczs (a, Mems[buf[2]], Mems[buf[1]], len,
+ ima_efncs)
+
+ # If imageb is constant then read imagea. If the constant
+ # is 1 do a vector move to imagec otherwise do a vector/scalar
+ # divide to imagec.
+ } else if (im_b == NULL) {
+ im[2] = im_a
+ while (ima_nls (im, buf, v, 2) != EOF) {
+ if (b == 0)
+ call amovks (divzero, Mems[buf[1]], len)
+ else if (b == 1)
+ call amovs (Mems[buf[2]], Mems[buf[1]], len)
+ else
+ call adivks (Mems[buf[2]], b, Mems[buf[1]], len)
+ }
+
+ # Read imagea and imageb and do the vector divide to imagec.
+ } else {
+ im[2] = im_a
+ im[3] = im_b
+ while (ima_nls (im, buf, v, 3) != EOF)
+ call advzs (Mems[buf[2]], Mems[buf[3]], Mems[buf[1]],
+ len, ima_efncs)
+ }
+end
+
+
+# IMA_EFNC -- Error function for division by zero.
+
+short procedure ima_efncs (a)
+
+short a
+short divzero
+common /imadcoms/ divzero
+
+begin
+ return (divzero)
+end
+
+procedure ima_divi (im_a, im_b, im_c, a, b, c)
+
+pointer im_a, im_b, im_c
+int a, b, c
+
+int len
+pointer im[3], buf[3]
+long v[IM_MAXDIM, 3]
+
+int ima_nli()
+int ima_efnci()
+extern ima_efnci
+
+int divzero
+common /imadcomi/ divzero
+
+begin
+ # Loop through all of the image lines.
+ divzero = c
+ im[1] = im_c
+ len = IM_LEN (im[1], 1)
+ call amovkl (long(1), v, 3 * IM_MAXDIM)
+
+ # If imagea is constant then read imageb and do a vector
+ # reciprical to imagec.
+ if (im_a == NULL) {
+ im[2] = im_b
+ while (ima_nli (im, buf, v, 2) != EOF)
+ call arczi (a, Memi[buf[2]], Memi[buf[1]], len,
+ ima_efnci)
+
+ # If imageb is constant then read imagea. If the constant
+ # is 1 do a vector move to imagec otherwise do a vector/scalar
+ # divide to imagec.
+ } else if (im_b == NULL) {
+ im[2] = im_a
+ while (ima_nli (im, buf, v, 2) != EOF) {
+ if (b == 0)
+ call amovki (divzero, Memi[buf[1]], len)
+ else if (b == 1)
+ call amovi (Memi[buf[2]], Memi[buf[1]], len)
+ else
+ call adivki (Memi[buf[2]], b, Memi[buf[1]], len)
+ }
+
+ # Read imagea and imageb and do the vector divide to imagec.
+ } else {
+ im[2] = im_a
+ im[3] = im_b
+ while (ima_nli (im, buf, v, 3) != EOF)
+ call advzi (Memi[buf[2]], Memi[buf[3]], Memi[buf[1]],
+ len, ima_efnci)
+ }
+end
+
+
+# IMA_EFNC -- Error function for division by zero.
+
+int procedure ima_efnci (a)
+
+int a
+int divzero
+common /imadcomi/ divzero
+
+begin
+ return (divzero)
+end
+
+procedure ima_divl (im_a, im_b, im_c, a, b, c)
+
+pointer im_a, im_b, im_c
+long a, b, c
+
+int len
+pointer im[3], buf[3]
+long v[IM_MAXDIM, 3]
+
+int ima_nll()
+long ima_efncl()
+extern ima_efncl
+
+long divzero
+common /imadcoml/ divzero
+
+begin
+ # Loop through all of the image lines.
+ divzero = c
+ im[1] = im_c
+ len = IM_LEN (im[1], 1)
+ call amovkl (long(1), v, 3 * IM_MAXDIM)
+
+ # If imagea is constant then read imageb and do a vector
+ # reciprical to imagec.
+ if (im_a == NULL) {
+ im[2] = im_b
+ while (ima_nll (im, buf, v, 2) != EOF)
+ call arczl (a, Meml[buf[2]], Meml[buf[1]], len,
+ ima_efncl)
+
+ # If imageb is constant then read imagea. If the constant
+ # is 1 do a vector move to imagec otherwise do a vector/scalar
+ # divide to imagec.
+ } else if (im_b == NULL) {
+ im[2] = im_a
+ while (ima_nll (im, buf, v, 2) != EOF) {
+ if (b == 0)
+ call amovkl (divzero, Meml[buf[1]], len)
+ else if (b == 1)
+ call amovl (Meml[buf[2]], Meml[buf[1]], len)
+ else
+ call adivkl (Meml[buf[2]], b, Meml[buf[1]], len)
+ }
+
+ # Read imagea and imageb and do the vector divide to imagec.
+ } else {
+ im[2] = im_a
+ im[3] = im_b
+ while (ima_nll (im, buf, v, 3) != EOF)
+ call advzl (Meml[buf[2]], Meml[buf[3]], Meml[buf[1]],
+ len, ima_efncl)
+ }
+end
+
+
+# IMA_EFNC -- Error function for division by zero.
+
+long procedure ima_efncl (a)
+
+long a
+long divzero
+common /imadcoml/ divzero
+
+begin
+ return (divzero)
+end
+
+procedure ima_divr (im_a, im_b, im_c, a, b, c)
+
+pointer im_a, im_b, im_c
+real a, b, c
+
+int len
+pointer im[3], buf[3]
+long v[IM_MAXDIM, 3]
+
+int ima_nlr()
+real ima_efncr()
+extern ima_efncr
+
+real divzero
+common /imadcomr/ divzero
+
+begin
+ # Loop through all of the image lines.
+ divzero = c
+ im[1] = im_c
+ len = IM_LEN (im[1], 1)
+ call amovkl (long(1), v, 3 * IM_MAXDIM)
+
+ # If imagea is constant then read imageb and do a vector
+ # reciprical to imagec.
+ if (im_a == NULL) {
+ im[2] = im_b
+ while (ima_nlr (im, buf, v, 2) != EOF)
+ call arczr (a, Memr[buf[2]], Memr[buf[1]], len,
+ ima_efncr)
+
+ # If imageb is constant then read imagea. If the constant
+ # is 1 do a vector move to imagec otherwise do a vector/scalar
+ # divide to imagec.
+ } else if (im_b == NULL) {
+ im[2] = im_a
+ while (ima_nlr (im, buf, v, 2) != EOF) {
+ if (b == 0.0)
+ call amovkr (divzero, Memr[buf[1]], len)
+ else if (b == 1.0)
+ call amovr (Memr[buf[2]], Memr[buf[1]], len)
+ else
+ call adivkr (Memr[buf[2]], b, Memr[buf[1]], len)
+ }
+
+ # Read imagea and imageb and do the vector divide to imagec.
+ } else {
+ im[2] = im_a
+ im[3] = im_b
+ while (ima_nlr (im, buf, v, 3) != EOF)
+ call advzr (Memr[buf[2]], Memr[buf[3]], Memr[buf[1]],
+ len, ima_efncr)
+ }
+end
+
+
+# IMA_EFNC -- Error function for division by zero.
+
+real procedure ima_efncr (a)
+
+real a
+real divzero
+common /imadcomr/ divzero
+
+begin
+ return (divzero)
+end
+
+procedure ima_divd (im_a, im_b, im_c, a, b, c)
+
+pointer im_a, im_b, im_c
+double a, b, c
+
+int len
+pointer im[3], buf[3]
+long v[IM_MAXDIM, 3]
+
+int ima_nld()
+double ima_efncd()
+extern ima_efncd
+
+double divzero
+common /imadcomd/ divzero
+
+begin
+ # Loop through all of the image lines.
+ divzero = c
+ im[1] = im_c
+ len = IM_LEN (im[1], 1)
+ call amovkl (long(1), v, 3 * IM_MAXDIM)
+
+ # If imagea is constant then read imageb and do a vector
+ # reciprical to imagec.
+ if (im_a == NULL) {
+ im[2] = im_b
+ while (ima_nld (im, buf, v, 2) != EOF)
+ call arczd (a, Memd[buf[2]], Memd[buf[1]], len,
+ ima_efncd)
+
+ # If imageb is constant then read imagea. If the constant
+ # is 1 do a vector move to imagec otherwise do a vector/scalar
+ # divide to imagec.
+ } else if (im_b == NULL) {
+ im[2] = im_a
+ while (ima_nld (im, buf, v, 2) != EOF) {
+ if (b == 0.0D0)
+ call amovkd (divzero, Memd[buf[1]], len)
+ else if (b == 1.0D0)
+ call amovd (Memd[buf[2]], Memd[buf[1]], len)
+ else
+ call adivkd (Memd[buf[2]], b, Memd[buf[1]], len)
+ }
+
+ # Read imagea and imageb and do the vector divide to imagec.
+ } else {
+ im[2] = im_a
+ im[3] = im_b
+ while (ima_nld (im, buf, v, 3) != EOF)
+ call advzd (Memd[buf[2]], Memd[buf[3]], Memd[buf[1]],
+ len, ima_efncd)
+ }
+end
+
+
+# IMA_EFNC -- Error function for division by zero.
+
+double procedure ima_efncd (a)
+
+double a
+double divzero
+common /imadcomd/ divzero
+
+begin
+ return (divzero)
+end
+
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