[hackers] [9base] add bclib from plan 9 sources || Evan Gates

From: <git_AT_suckless.org>
Date: Thu, 18 Aug 2016 08:49:20 +0200 (CEST)

commit 5673fdd72fae4823ba67e2c216bbfd724bc9e01c
Author: Evan Gates <evan.gates_AT_gmail.com>
AuthorDate: Wed Aug 17 11:45:57 2016 -0700
Commit: Anselm R Garbe <garbeam_AT_gmail.com>
CommitDate: Thu Aug 18 08:49:11 2016 +0200

    add bclib from plan 9 sources
    
    add post-install and pre-uninstall targets to tools using yacc.mk
    mirroring those in std.mk in order to install and uninstall bclib

diff --git a/awk/Makefile b/awk/Makefile
index 80b32eb..d0e86b3 100644
--- a/awk/Makefile
+++ b/awk/Makefile
_AT_@ -7,3 +7,7 @@ YFILES = awkgram.y
 MANFILES = awk.1
 
 include ../yacc.mk
+
+pre-uninstall:
+
+post-install:
diff --git a/bc/Makefile b/bc/Makefile
index 0d3d1b0..8eed9d5 100644
--- a/bc/Makefile
+++ b/bc/Makefile
_AT_@ -10,3 +10,10 @@ include ../yacc.mk
 
 # Solaris
 #LDFLAGS += -dy -lxnet
+
+pre-uninstall:
+ rm -f ${DESTDIR}${PREFIX}/lib/bclib
+
+post-install:
+ _AT_mkdir -p ${DESTDIR}${PREFIX}/lib
+ _AT_cp bclib ${DESTDIR}${PREFIX}/lib/
diff --git a/bc/bclib b/bc/bclib
new file mode 100644
index 0000000..97b1c92
--- /dev/null
+++ b/bc/bclib
_AT_@ -0,0 +1,246 @@
+scale = 50
+define e(x) {
+ auto a, b, c, d, e, g, w, y, t, r
+
+ r = ibase
+ ibase = A
+
+ t = scale
+ scale = t + .434*x + 1
+
+ w = 0
+ if(x<0) {
+ x = -x
+ w = 1
+ }
+ y = 0
+ while(x>2) {
+ x /= 2
+ y++
+ }
+
+ a = 1
+ b = 1
+ c = b
+ d = 1
+ e = 1
+ for(a=1; 1; a++) {
+ b *= x
+ c = c*a+b
+ d *= a
+ g = c/d
+ if(g == e) {
+ g = g/1
+ while(y--) {
+ g *= g
+ }
+ scale = t
+ if(w==1) {
+ ibase = r
+ return 1/g
+ }
+ ibase = r
+ return g/1
+ }
+ e = g
+ }
+}
+
+define l(x) {
+ auto a, b, c, d, e, f, g, u, s, t, r, z
+
+ r = ibase
+ ibase = A
+ if(x <= 0) {
+ z = 1-10^scale
+ ibase = r
+ return z
+ }
+ t = scale
+
+ f = 1
+ scale += scale(x) - length(x) + 1
+ s = scale
+ while(x > 2) {
+ s += (length(x)-scale(x))/2 + 1
+ if(s>0) {
+ scale = s
+ }
+ x = sqrt(x)
+ f *= 2
+ }
+ while(x < .5) {
+ s += (length(x)-scale(x))/2 + 1
+ if(s>0) {
+ scale = s
+ }
+ x = sqrt(x)
+ f *= 2
+ }
+
+ scale = t + length(f) - scale(f) + 1
+ u = (x-1)/(x+1)
+
+ scale += 1.1*length(t) - 1.1*scale(t)
+ s = u*u
+ b = 2*f
+ c = b
+ d = 1
+ e = 1
+ for(a=3; 1; a=a+2){
+ b *= s
+ c = c*a + d*b
+ d *= a
+ g = c/d
+ if(g==e) {
+ scale = t
+ ibase = r
+ return u*c/d
+ }
+ e = g
+ }
+}
+
+define s(x) {
+ auto a, b, c, s, t, y, p, n, i, r
+
+ r = ibase
+ ibase = A
+ t = scale
+ y = x/.7853
+ s = t + length(y) - scale(y)
+ if(s<t) {
+ s = t
+ }
+ scale = s
+ p = a(1)
+
+ scale = 0
+ if(x>=0) {
+ n = (x/(2*p)+1)/2
+ }
+ if(x<0) {
+ n = (x/(2*p)-1)/2
+ }
+ x -= 4*n*p
+ if(n%2 != 0) {
+ x = -x
+ }
+
+ scale = t + length(1.2*t) - scale(1.2*t)
+ y = -x*x
+ a = x
+ b = 1
+ s = x
+ for(i=3; 1; i+=2) {
+ a *= y
+ b *= i*(i-1)
+ c = a/b
+ if(c==0){
+ scale = t
+ ibase = r
+ return s/1
+ }
+ s += c
+ }
+}
+
+define c(x) {
+ auto t, r
+
+ r = ibase
+ ibase = A
+ t = scale
+ scale = scale+1
+ x = s(x + 2*a(1))
+ scale = t
+ ibase = r
+ return x/1
+}
+
+define a(x) {
+ auto a, b, c, d, e, f, g, s, t, r, z
+
+ r = ibase
+ ibase = A
+ if(x==0) {
+ return 0
+ }
+ if(x==1) {
+ z = .7853981633974483096156608458198757210492923498437764/1
+ ibase = r
+ if(scale<52) {
+ return z
+ }
+ }
+ t = scale
+ f = 1
+ while(x > .5) {
+ scale++
+ x = -(1 - sqrt(1.+x*x))/x
+ f *= 2
+ }
+ while(x < -.5) {
+ scale++
+ x = -(1 - sqrt(1.+x*x))/x
+ f *= 2
+ }
+ s = -x*x
+ b = f
+ c = f
+ d = 1
+ e = 1
+ for(a=3; 1; a+=2) {
+ b *= s
+ c = c*a + d*b
+ d *= a
+ g = c/d
+ if(g==e) {
+ scale = t
+ ibase = r
+ return x*c/d
+ }
+ e = g
+ }
+}
+
+define j(n,x) {
+ auto a,b,c,d,e,g,i,s,k,t,r
+
+ r = ibase
+ ibase = A
+
+ t = scale
+ k = 1.36*x + 1.16*t - n
+ k = length(k) - scale(k)
+ if(k>0) {
+ scale += k
+ }
+
+ s = -x*x/4
+ if(n<0) {
+ n = -n
+ x = -x
+ }
+ a = 1
+ c = 1
+ for(i=1; i<=n; i++) {
+ a *= x
+ c *= 2*i
+ }
+ b = a
+ d = 1
+ e = 1
+ for(i=1; 1; i++) {
+ a *= s
+ b = b*i*(n+i) + a
+ c *= i*(n+i)
+ g = b/c
+ if(g==e) {
+ scale = t
+ ibase = r
+ return g/1
+ }
+ e = g
+ }
+}
diff --git a/grep/Makefile b/grep/Makefile
index 192c8bf..17b2811 100644
--- a/grep/Makefile
+++ b/grep/Makefile
_AT_@ -7,3 +7,7 @@ YFILES = grep.y
 MANFILES = grep.1
 
 include ../yacc.mk
+
+pre-uninstall:
+
+post-install:
diff --git a/hoc/Makefile b/hoc/Makefile
index 961bccb..38c05e1 100644
--- a/hoc/Makefile
+++ b/hoc/Makefile
_AT_@ -7,3 +7,7 @@ YFILES = hoc.y
 MANFILES = hoc.1
 
 include ../yacc.mk
+
+pre-uninstall:
+
+post-install:
diff --git a/yacc.mk b/yacc.mk
index 56a7bdb..49fbc09 100644
--- a/yacc.mk
+++ b/yacc.mk
_AT_@ -14,7 +14,9 @@ depend:
         _AT_echo YACC ${YFILES}
         _AT_${YACC} -d ${YFILES}
 
-install: ${TARG}
+install: install-default post-install
+
+install-default: ${TARG}
         _AT_mkdir -p ${DESTDIR}${PREFIX}/bin
         _AT_cp -f ${TARG} ${DESTDIR}${PREFIX}/bin/
         _AT_chmod 755 ${DESTDIR}${PREFIX}/bin/${TARG}
_AT_@ -22,7 +24,7 @@ install: ${TARG}
         _AT_cp -f ${MANFILES} ${DESTDIR}${MANPREFIX}/man1
         _AT_chmod 444 ${DESTDIR}${MANPREFIX}/man1/${MANFILES}
 
-uninstall:
+uninstall: pre-uninstall
         rm -f ${DESTDIR}${PREFIX}/bin/${TARG}
         rm -f ${DESTDIR}${MANPREFIX}/man1/${MANFILES}
 
Received on Thu Aug 18 2016 - 08:49:20 CEST