From 76718c0ec3717c4f9e5b0f659ab829f4b92419d2 Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Sat, 2 Mar 2019 12:50:34 +0100
Subject: playing with some haskell code

---
 hask-io/Makefile | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 hask-io/mini.c   | 14 ++++++++++++++
 hask-io/mini.hs  |  3 +++
 3 files changed, 63 insertions(+)
 create mode 100644 hask-io/Makefile
 create mode 100644 hask-io/mini.c
 create mode 100644 hask-io/mini.hs

(limited to 'hask-io')

diff --git a/hask-io/Makefile b/hask-io/Makefile
new file mode 100644
index 0000000..e6e1da6
--- /dev/null
+++ b/hask-io/Makefile
@@ -0,0 +1,46 @@
+#
+# Some GHC flags explained
+#
+# -v			verbose mode
+# -O2			level 2 optimizations
+# -rtsopts		allow +RTS flags
+# -prof			enable basic time and allocation profiling
+# -auto-all		cost centers on all top level functions
+#  			(you can also add them via the SCC pragma)
+# -caf-all      	generate data for CAFs (constant applicative forms)
+#  			t
+# -fforce-recomp 	force recompilation
+#
+# Notes: you will obtain the profiling versions of dependancies via: 
+#        stack install --profile [libraryname]
+#
+# 	-fprof-auto replaced -auto-all
+# 	-fprof-cafs replaced -caf-all
+#
+
+build-prof:
+	stack ghc --profile -- -rtsopts -prof -fprof-auto -fprof-cafs -O2 base64.hs 
+
+#
+# Some +RTS flags
+#
+# -p	profiling
+# -K 	set stack limit
+# -hc 	extract heap profile
+# -hy	allocation by type
+# -hd   allocation by constructor
+# -iN   sampling frequency in seconds. e.g. -i0.01
+# -ddump-simpl generate core version 
+#
+# Note: render the heap profile as graph with: hp2ps -e8in -c file.hp
+#
+
+run-prof:
+	cat random.bin | ./base64 +RTS -p -K100M > /dev/null
+
+
+test-mini-hask:
+	#stack ghc -- -rtsopts -prof -fprof-auto -fprof-cafs -O mini.hs -o mini_hask_exe
+	stack ghc -- -O mini.hs -o mini_hask_exe
+test-mini-c:
+	gcc -O3 mini.c -o mini_c_exe
diff --git a/hask-io/mini.c b/hask-io/mini.c
new file mode 100644
index 0000000..eb5ba46
--- /dev/null
+++ b/hask-io/mini.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+int main(){
+    char buf[2048];
+    int a=0;
+    while(1){
+        size_t sz=fread(&buf,1,2048,stdin);
+        if(!sz)break;
+        for(size_t i=0;i<sz;i++){
+            a+=buf[i];
+            a%=256;
+        }
+    }
+    printf("%i\n",a);
+}
diff --git a/hask-io/mini.hs b/hask-io/mini.hs
new file mode 100644
index 0000000..7d73bfe
--- /dev/null
+++ b/hask-io/mini.hs
@@ -0,0 +1,3 @@
+import qualified Data.ByteString.Lazy as B
+main = B.getContents>>=print.show.f
+       where f = B.foldl1' (+)
-- 
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