Fix up some std.rand syntax #1161 (#1162)

* Fix old syntax in rand

Ziggurat somehow did not get updated to latest syntax

* Fix broken float casts

f32 float casts somehow not updated to latest syntax
3e94347e61tgschultz committed on 6/27/2018, 4:30:15 PM· committed by Andrew Kelleyparent1b4bae6
2 files changedLine totals unavailable