diff options
| -rw-r--r-- | lib/pure/math.nim | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/pure/math.nim b/lib/pure/math.nim index 8ea8ee203..b921b1841 100644 --- a/lib/pure/math.nim +++ b/lib/pure/math.nim @@ -147,6 +147,18 @@ when not defined(JS): # C proc ln*(x: float32): float32 {.importc: "logf", header: "<math.h>".} proc ln*(x: float64): float64 {.importc: "log", header: "<math.h>".} ## Computes the natural log of `x` +else: # JS + proc sqrt*(x: float32): float32 {.importc: "Math.sqrt", nodecl.} + proc sqrt*(x: float64): float64 {.importc: "Math.sqrt", nodecl.} + + proc ln*(x: float32): float32 {.importc: "Math.log", nodecl.} + proc ln*(x: float64): float64 {.importc: "Math.log", nodecl.} + +proc log*[T: SomeFloat](x, base: T): T = + ## Computes the logarithm ``base`` of ``x`` + ln(x) / ln(base) + +when not defined(JS): # C proc log10*(x: float32): float32 {.importc: "log10f", header: "<math.h>".} proc log10*(x: float64): float64 {.importc: "log10", header: "<math.h>".} ## Computes the common logarithm (base 10) of `x` @@ -204,11 +216,6 @@ when not defined(JS): # C ## Computes the inverse hyperbolic tangent of `x` else: # JS - proc sqrt*(x: float32): float32 {.importc: "Math.sqrt", nodecl.} - proc sqrt*(x: float64): float64 {.importc: "Math.sqrt", nodecl.} - - proc ln*(x: float32): float32 {.importc: "Math.log", nodecl.} - proc ln*(x: float64): float64 {.importc: "Math.log", nodecl.} proc log10*(x: float32): float32 {.importc: "Math.log10", nodecl.} proc log10*(x: float64): float64 {.importc: "Math.log10", nodecl.} proc log2*(x: float32): float32 {.importc: "Math.log2", nodecl.} @@ -682,3 +689,6 @@ when isMainModule: doAssert floorMod(8.0, -3.0) ==~ -1.0 doAssert floorMod(-8.5, 3.0) ==~ 0.5 + + block: # log + doAssert log(4.0, 3.0) == ln(4.0) / ln(3.0) |