Init.

50 files changed, 223 insertions, 0 deletions

diff --git a/meap/ch5/Cargo.lock b/meap/ch5/Cargo.lock
new file mode 100755
index 0000000..75eeb15
--- /dev/null
+++ b/meap/ch5/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "ch5"
+version = "0.1.0"
+
diff --git a/meap/ch5/Cargo.toml b/meap/ch5/Cargo.toml
new file mode 100755
index 0000000..0754948
--- /dev/null
+++ b/meap/ch5/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ch5"
+version = "0.1.0"
+authors = ["Adam Carpenter <53hornet@gmail.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/meap/ch5/src/main.rs b/meap/ch5/src/main.rs
new file mode 100755
index 0000000..2fcf60c
--- /dev/null
+++ b/meap/ch5/src/main.rs
@@ -0,0 +1,191 @@
+////use std::mem;
+//const BIAS: i32 = 127;
+//const RADIX: f32 = 2.0;
+//
+//fn main() {
+    //let a: u16 = 0b1100_0011_1100_0011;
+    //dbg!(a);
+    ////let b: i16 = 0b1100_0011_1100_0011;
+    ////dbg!(b);
+
+//    let a: f32 = 42.42;
+//    let frankentype: u32 = unsafe {
+//        std::mem::transmute(a)
+//    };
+//
+//    //println!("{:032b}", frankentype);
+
+//    let mut i: u16 = 0;
+//
+//    loop {
+//        print!("{}\t", i);
+//        if i % 10000 == 0 {
+//            print!("\n");
+//        }
+//        i += 1000;
+//    }
+
+    //let zero: u16 = 0b0000_0000_0000_0000;
+    //let one: u16 = 0b0000_0000_0000_0001;
+    //let two: u16 = 0b0000_0000_0000_0010;
+    //let big_533: u16 = 0b1111_1111_1111_1101;
+    //let big_534: u16 = 0b1111_1111_1111_1110;
+    //let big_535: u16 = 0b1111_1111_1111_1111;
+
+    //prinlt!("{}, {}, {}, ..., {}, {}, {}\n", zero, one, two, big_533, big_534, big_535);
+    //let big_533: u16 = 0b1111_1111_1111_1101;
+//    let (a, b) = (200, 200);
+//    let c: u8 = a + b;
+//    println!("200 + 200 = {}", c);
+
+
+//    let big_endian: [u8; 4] = [
+//        0xAA,
+//        0xBB,
+//        0xCC,
+//        0xDD,
+//    ];
+//
+//    let little_endian: [u8; 4] = [
+//        0xDD,
+//        0xCC,
+//        0xBB,
+//        0xAA,
+//    ];
+//
+//    let (a, b): (i32, i32) = unsafe {
+//        (mem::transmute(big_endian), mem::transmute(little_endian))
+//    };
+//
+//    dbg!(a);
+//    dbg!(b);
+
+
+//    let n: f32 = 42.42;
+//
+//    let (signbit, exponent, fraction) = deconstruct_f32(n);
+//    let (sign, exponent, mantissa) = decode_f32_parts(signbit, exponent, fraction);
+//    let reconstituted_n = f32_from_parts(sign, exponent, mantissa);
+//    dbg!(n);
+//    dbg!(signbit);
+//    dbg!(exponent);
+//    dbg!(mantissa);
+//    dbg!(reconstituted_n);
+//}
+//
+//fn deconstruct_f32(n: f32) -> (u32, u32, u32) {
+//    let n_: u32 = unsafe { std::mem::transmute(n) };
+//
+//    let sign = (n_ >> 31) & 1;
+//    let exponent = (n_ >> 23) & 0xff;
+//    let fraction = 0b00000000_01111111_11111111_11111111 & n_;
+//    (sign, exponent, fraction)
+//}
+//
+//fn decode_f32_parts(sign: u32, exponent: u32, fraction: u32) -> (f32, f32, f32) {
+//    let signed_1 = (-1.0_f32).powf(sign as f32);
+//
+//    let exponent = (exponent as i32) - BIAS;
+//    let exponent = RADIX.powf(exponent as f32);
+//
+//    let mut mantissa: f32 = 1.0;
+//
+//    for i in 0..23_u32 {
+//        let one_at_bit_i = 1 << i;
+//
+//        if (one_at_bit_i & fraction) != 0 {
+//            mantissa += 2_f32.powf((i as f32) - 23.0);
+//        }
+//    }
+//
+//    (signed_1, exponent, mantissa)
+//}
+//
+//fn f32_from_parts(sign: f32, exponent: f32, mantissa: f32) -> f32 {
+//    sign * exponent * mantissa
+//}
+
+fn mock_rand(n: u8) -> f32 {
+    let base: u32 = 0b0_01111110_00000000000000000000000;
+    let large_n = (n as u32) << 15;
+    let f32_bits = base | large_n;
+    let m = f32::from_bits(f32_bits);
+    2.0 * (m - 0.5)
+}
+
+fn main() {
+    dbg!(mock_rand(0xff));
+    dbg!(mock_rand(0x77));
+    dbg!(mock_rand(0x00));
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Q7(i8);
+
+impl From<f64> for Q7 {
+    fn from(n: f64) -> Self {
+        if n >= 1.0 {
+            Q7(127)
+        }
+        else if n <= -1.0 {
+            Q7(-128)
+        }
+        else {
+            Q7((n * 128.0) as i8)
+        }
+    }
+}
+
+impl From<Q7> for f64 {
+    fn from(n: Q7) -> f64 {
+        (n.0 as f64) * 2f64.powf(-7.0)
+    }
+}
+
+impl From<f32> for Q7 {
+    fn from(n: f32) -> Self {
+        Q7::from(n as f64)
+    }
+}
+
+impl From<Q7> for f32 {
+    fn from(n: Q7) -> f32 {
+        f64::from(n) as f32 
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn out_of_bounds() {
+        assert_eq!(Q7::from(10.), Q7::from(1.));
+        assert_eq!(Q7::from(-10.), Q7::from(-1.));
+    }
+
+    #[test]
+    fn f32_to_q7() {
+        let n1: f32 = 0.7;
+        let q1 = Q7::from(n1);
+        let n2: f32 = -0.4;
+        let q2 = Q7::from(n2);
+        let n3: f32 = 123.0;
+        let q3 = Q7::from(n3);
+
+        assert_eq!(q1, Q7(89));
+        assert_eq!(q2, Q7(-51));
+        assert_eq!(q3, Q7(127));
+    }
+
+    #[test]
+    fn q7_to_f32() {
+        let q1 = Q7::from(0.7);
+        let n1 = f32::from(q1);
+        assert_eq!(n1, 0.6953125);
+
+        let q2 = Q7::from(n1);
+        let n2 = f32::from(q2);
+        assert_eq!(n1, n2);
+    }
+}
diff --git a/meap/ch5/target/.rustc_info.json b/meap/ch5/target/.rustc_info.json
new file mode 100755
index 0000000..fd08c40
--- /dev/null
+++ b/meap/ch5/target/.rustc_info.json
@@ -0,0 +1 @@
+{"rustc_fingerprint":5361904215157244162,"outputs":{"1164083562126845933":["rustc 1.34.0\nbinary: rustc\ncommit-hash: unknown\ncommit-date: unknown\nhost: x86_64-unknown-linux-gnu\nrelease: 1.34.0\nLLVM version: 8.0\n",""],"1617349019360157463":["___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/usr\ndebug_assertions\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n",""],"15337506775154344876":["___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/usr\ndebug_assertions\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n",""]},"successes":{}}
\ No newline at end of file
diff --git a/meap/ch5/target/debug/.cargo-lock b/meap/ch5/target/debug/.cargo-lock
new file mode 100755
index 0000000..e69de29
--- /dev/null
+++ b/meap/ch5/target/debug/.cargo-lock
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/bin-ch5-46e10a775cf0013d b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/bin-ch5-46e10a775cf0013d
new file mode 100755
index 0000000..42ae9c8
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/bin-ch5-46e10a775cf0013d
@@ -0,0 +1 @@
+9321ce8cbb8a0f0f
\ No newline at end of file
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/bin-ch5-46e10a775cf0013d.json b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/bin-ch5-46e10a775cf0013d.json
new file mode 100755
index 0000000..eb42c8d
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/bin-ch5-46e10a775cf0013d.json
@@ -0,0 +1 @@
+{"rustc":17307852377973297654,"features":"[]","target":8256848390295098997,"profile":14996655781355331481,"path":1036222786711178230,"deps":[],"local":[{"MtimeBased":[[1555954931,979396700],".fingerprint/ch5-46e10a775cf0013d/dep-bin-ch5-46e10a775cf0013d"]}],"rustflags":[],"edition":"Edition2018"}
\ No newline at end of file
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/dep-bin-ch5-46e10a775cf0013d b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/dep-bin-ch5-46e10a775cf0013d
new file mode 100755
index 0000000..e046c38
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/dep-bin-ch5-46e10a775cf0013d
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/invoked.timestamp b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/invoked.timestamp
new file mode 100755
index 0000000..e00328d
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-46e10a775cf0013d/invoked.timestamp
@@ -0,0 +1 @@
+This file has an mtime of when this was started.
\ No newline at end of file
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/dep-test-bin-ch5-9316120197002b39 b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/dep-test-bin-ch5-9316120197002b39
new file mode 100755
index 0000000..e046c38
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/dep-test-bin-ch5-9316120197002b39
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/invoked.timestamp b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/invoked.timestamp
new file mode 100755
index 0000000..e00328d
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/invoked.timestamp
@@ -0,0 +1 @@
+This file has an mtime of when this was started.
\ No newline at end of file
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/test-bin-ch5-9316120197002b39 b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/test-bin-ch5-9316120197002b39
new file mode 100755
index 0000000..7a4b840
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/test-bin-ch5-9316120197002b39
@@ -0,0 +1 @@
+e2c4abe1a5ced339
\ No newline at end of file
diff --git a/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/test-bin-ch5-9316120197002b39.json b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/test-bin-ch5-9316120197002b39.json
new file mode 100755
index 0000000..f7916db
--- /dev/null
+++ b/meap/ch5/target/debug/.fingerprint/ch5-9316120197002b39/test-bin-ch5-9316120197002b39.json
@@ -0,0 +1 @@
+{"rustc":17307852377973297654,"features":"[]","target":8256848390295098997,"profile":8248545651247322450,"path":1036222786711178230,"deps":[],"local":[{"MtimeBased":[[1555954930,625381200],".fingerprint/ch5-9316120197002b39/dep-test-bin-ch5-9316120197002b39"]}],"rustflags":[],"edition":"Edition2018"}
\ No newline at end of file
diff --git a/meap/ch5/target/debug/ch5 b/meap/ch5/target/debug/ch5
new file mode 100755
index 0000000..55a50fd
--- /dev/null
+++ b/meap/ch5/target/debug/ch5
diff --git a/meap/ch5/target/debug/ch5-9316120197002b39 b/meap/ch5/target/debug/ch5-9316120197002b39
new file mode 100755
index 0000000..9b0d631
--- /dev/null
+++ b/meap/ch5/target/debug/ch5-9316120197002b39
diff --git a/meap/ch5/target/debug/ch5-9316120197002b39.d b/meap/ch5/target/debug/ch5-9316120197002b39.d
new file mode 100755
index 0000000..ea0bc38
--- /dev/null
+++ b/meap/ch5/target/debug/ch5-9316120197002b39.d
@@ -0,0 +1 @@
+/home/carpenat/devel/learning-rust/meap/ch5/target/debug/ch5-9316120197002b39: /home/carpenat/devel/learning-rust/meap/ch5/src/main.rs
diff --git a/meap/ch5/target/debug/ch5.d b/meap/ch5/target/debug/ch5.d
new file mode 100755
index 0000000..0b93f00
--- /dev/null
+++ b/meap/ch5/target/debug/ch5.d
@@ -0,0 +1 @@
+/home/carpenat/devel/learning-rust/meap/ch5/target/debug/ch5: /home/carpenat/devel/learning-rust/meap/ch5/src/main.rs
diff --git a/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d b/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d
new file mode 100755
index 0000000..55a50fd
--- /dev/null
+++ b/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d
diff --git a/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d.d b/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d.d
new file mode 100755
index 0000000..1fcde82
--- /dev/null
+++ b/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d.d
@@ -0,0 +1,5 @@
+/home/carpenat/devel/learning-rust/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d: src/main.rs
+
+/home/carpenat/devel/learning-rust/meap/ch5/target/debug/deps/ch5-46e10a775cf0013d.d: src/main.rs
+
+src/main.rs:
diff --git a/meap/ch5/target/debug/deps/ch5-9316120197002b39 b/meap/ch5/target/debug/deps/ch5-9316120197002b39
new file mode 100755
index 0000000..9b0d631
--- /dev/null
+++ b/meap/ch5/target/debug/deps/ch5-9316120197002b39
diff --git a/meap/ch5/target/debug/deps/ch5-9316120197002b39.d b/meap/ch5/target/debug/deps/ch5-9316120197002b39.d
new file mode 100755
index 0000000..db8c5a6
--- /dev/null
+++ b/meap/ch5/target/debug/deps/ch5-9316120197002b39.d
@@ -0,0 +1,5 @@
+/home/carpenat/devel/learning-rust/meap/ch5/target/debug/deps/ch5-9316120197002b39: src/main.rs
+
+/home/carpenat/devel/learning-rust/meap/ch5/target/debug/deps/ch5-9316120197002b39.d: src/main.rs
+
+src/main.rs:
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/131hx6aogxa3cb9n.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/131hx6aogxa3cb9n.o
new file mode 100755
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+++ b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/131hx6aogxa3cb9n.o
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1cdx3b8nidwkkcjr.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1cdx3b8nidwkkcjr.o
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+++ b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1cdx3b8nidwkkcjr.o
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1d7ea3e2fw6kzluy.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1d7ea3e2fw6kzluy.o
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diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1p15q4obvvajv9mq.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1p15q4obvvajv9mq.o
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+++ b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1p15q4obvvajv9mq.o
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1q2e7yv668xrks2m.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/1q2e7yv668xrks2m.o
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diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/22elhj5srsxnh4ez.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/22elhj5srsxnh4ez.o
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+++ b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/22elhj5srsxnh4ez.o
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2ir0bpdybahl0hy4.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2ir0bpdybahl0hy4.o
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+++ b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2ir0bpdybahl0hy4.o
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2p3ajrqqbkdrma7v.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2p3ajrqqbkdrma7v.o
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+++ b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2p3ajrqqbkdrma7v.o
diff --git a/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2u4z51n7gy9gsonf.o b/meap/ch5/target/debug/incremental/ch5-17kbpbgfrls49/s-fbjfts8jbk-14hg0gf-3o9kzrrypqiit/2u4z51n7gy9gsonf.o
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