diff options
Diffstat (limited to 'tests/float/tfloat4.nim')
| -rw-r--r-- | tests/float/tfloat4.nim | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/tests/float/tfloat4.nim b/tests/float/tfloat4.nim index 006b4d88f..2bb61eb58 100644 --- a/tests/float/tfloat4.nim +++ b/tests/float/tfloat4.nim @@ -1,15 +1,14 @@ discard """ - file: "tfloat4.nim" output: "passed all tests." - exitcode: 0 """ -import math, strutils + +import strutils proc c_sprintf(buf, fmt: cstring) {.importc:"sprintf", header: "<stdio.h>", varargs.} proc floatToStr(f: float64): string = var buffer: array[128, char] - c_sprintf(buffer, "%.16e", f) + c_sprintf(cast[cstring](addr buffer), "%.16e", f) result = "" for ch in buffer: if ch == '\0': @@ -30,8 +29,10 @@ let testFloats = [ "0.00097656250000000021684043449710088680149056017398834228515625" ] -for num in testFloats: - doAssert num.parseFloat.floatToStr.parseFloat == num.parseFloat +when not defined(windows): + # Windows' sprintf produces niceties like -1.#INF... + for num in testFloats: + doAssert num.parseFloat.floatToStr.parseFloat == num.parseFloat doAssert "0".parseFloat == 0.0 doAssert "-.1".parseFloat == -0.1 @@ -46,5 +47,23 @@ doAssert "2.71828182845904523536028747".parseFloat == 2.71828182845904523536028747 doAssert 0.00097656250000000021684043449710088680149056017398834228515625 == "0.00097656250000000021684043449710088680149056017398834228515625".parseFloat +doAssert 0.00998333 == ".00998333".parseFloat +doAssert 0.00128333 == ".00128333".parseFloat +doAssert 999999999999999.0 == "999999999999999.0".parseFloat +doAssert 9999999999999999.0 == "9999999999999999.0".parseFloat +doAssert 0.999999999999999 == ".999999999999999".parseFloat +doAssert 0.9999999999999999 == ".9999999999999999".parseFloat + +# bug #18400 +var s = [-13.888888'f32] +doAssert $s[0] == "-13.888888" +var x = 1.23456789012345'f32 +doAssert $x == "1.2345679" + +# bug #21847 +doAssert parseFloat"0e+42" == 0.0 +doAssert parseFloat"0e+42949672969" == 0.0 +doAssert parseFloat"0e+42949672970" == 0.0 +doAssert parseFloat"0e+42949623223346323563272970" == 0.0 echo("passed all tests.") |