Mercurial > projects > ldc
diff tests/mini/dotproduct.d @ 341:1bb99290e03a trunk
[svn r362] Started merging the old 'test' dir as well as the newer 'tangotests' dir into 'tests/mini' and 'tests/minicomplex'.
author | lindquist |
---|---|
date | Sun, 13 Jul 2008 02:51:19 +0200 |
parents | test/dotproduct.d@d9d5d59873d8 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tests/mini/dotproduct.d Sun Jul 13 02:51:19 2008 +0200 @@ -0,0 +1,36 @@ +extern(C) int printf(char*, ...); + +struct vec3 +{ + float x,y,z; + + float dot(ref vec3 v) + { + return x*v.x + y*v.y + z*v.z; + } + + void print(char[] n) + { + printf("%.*s = vec3(%.4f, %.4f, %.4f)\n", n.length, n.ptr, x,y,z); + } +} + +int main() +{ + printf("Dot Product test\n"); + + const f = 0.7071067811865474617; + vec3 v = vec3(f,f,0); + vec3 w = vec3(f,0,f); + + v.print("v"); + w.print("w"); + + auto dp = v.dot(w); + printf("v ยท w = %f\n", dp); + assert(dp > 0.4999 && dp < 0.5001); + + printf(" SUCCESS\n"); + return 0; +} +