fix #17118 (#17119) [backport:1.2]

* fix js unsigned integer
* Use `std` prefix for standard library modules
* fix #17118

(cherry picked from commit 32bf10126c)

compiler/vmops.nim

@@ -11,7 +11,8 @@
 #import vmdeps, vm
 from math import sqrt, ln, log10, log2, exp, round, arccos, arcsin,
   arctan, arctan2, cos, cosh, hypot, sinh, sin, tan, tanh, pow, trunc,
-  floor, ceil, `mod`
+  floor, ceil, `mod`, cbrt, arcsinh, arccosh, arctanh, erf, erfc, gamma,
+  lgamma
 
 from os import getEnv, existsEnv, dirExists, fileExists, putEnv, walkDir, getAppFilename
 from md5 import getMD5
@@ -147,6 +148,7 @@ proc registerAdditionalOps*(c: PCtx) =
     setResult a, c.config.projectPath.string
 
   wrap1f_math(sqrt)
+  wrap1f_math(cbrt)
   wrap1f_math(ln)
   wrap1f_math(log10)
   wrap1f_math(log2)
@@ -155,6 +157,9 @@ proc registerAdditionalOps*(c: PCtx) =
   wrap1f_math(arccos)
   wrap1f_math(arcsin)
   wrap1f_math(arctan)
+  wrap1f_math(arcsinh)
+  wrap1f_math(arccosh)
+  wrap1f_math(arctanh)
   wrap2f_math(arctan2)
   wrap1f_math(cos)
   wrap1f_math(cosh)
@@ -167,6 +172,10 @@ proc registerAdditionalOps*(c: PCtx) =
   wrap1f_math(trunc)
   wrap1f_math(floor)
   wrap1f_math(ceil)
+  wrap1f_math(erf)
+  wrap1f_math(erfc)
+  wrap1f_math(gamma)
+  wrap1f_math(lgamma)
 
   wrap1s(getMD5, md5op)
 

tests/stdlib/tmath.nim

@@ -213,6 +213,25 @@ block:
       doAssert(classify(trunc(f_nan.float32)) == fcNan)
       doAssert(classify(trunc(0.0'f32)) == fcZero)
 
+    block:
+      when not defined(js):
+        # check for no side effect annotation
+        proc mySqrt(num: float): float {.noSideEffect.} =
+          # xxx unused
+          sqrt(num)
+
+        # check gamma function
+        doAssert gamma(5.0) == 24.0 # 4!
+        doAssert almostEqual(gamma(0.5), sqrt(PI))
+        doAssert almostEqual(gamma(-0.5), -2 * sqrt(PI))
+        doAssert lgamma(1.0) == 0.0 # ln(1.0) == 0.0
+        doAssert almostEqual(lgamma(0.5), 0.5 * ln(PI))
+        doAssert erf(6.0) > erf(5.0)
+        doAssert erfc(6.0) < erfc(5.0)
+
+    when not defined(js) and not defined(windows): # xxx pending bug #17017
+      doAssert gamma(-1.0).isNaN
+
     block: # sgn() tests
       assert sgn(1'i8) == 1
       assert sgn(1'i16) == 1