zig

commit 711e3d71b967961da9bf2ed6a2bd5cce7dfdfb2d (tree)
parent 1fa0cabf9dd0c2016a60c23bb616f0f39daf1dfd
Author: Andrew Kelley <superjoe30@gmail.com>
Date:   Wed, 27 Jul 2016 23:46:20 -0700

std: add vaporware plans for floating point builtins

Diffstat:
M
std/rand.zig
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/std/rand.zig b/std/rand.zig
@@ -77,8 +77,12 @@ pub struct Rand {
 
     /// Get a floating point value in the range 0.0..1.0.
     pub fn float(r: &Rand, inline T: type) -> T {
+        // TODO Implement this way instead:
+        // const int = @int_type(false, @sizeof(T) * 8);
+        // const mask = ((1 << @float_mantissa_bit_count(T)) - 1);
+        // const rand_bits = r.rng.scalar(int) & mask;
+        // return @float_compose(T, false, 0, rand_bits) - 1.0
         const int_type = @int_type(false, @sizeof(T) * 8);
-        // TODO switch statement for constant values
         const precision = if (T == f32) {
             16777216
         } else if (T == f64) {