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annotate java/jdc/examples/UnixMathExample.java @ 59:2725de59454a

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- fixed potentially uninitialized ptr - added todo item to release GIL under certain circumstances
author Tassilo Philipp
date Tue, 22 Jun 2021 18:49:02 +0200
parents 4ee8d6aa7721
children
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1 import org.dyncall.DC;
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2
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3 class UnixMathExample
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4 {
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5 public static void main(String args[])
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6 {
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7 long lib = DC.loadLibrary("/usr/lib/libm.so");
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8 System.out.format("libm.so handle: %x\n", lib);
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9
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10 long f0 = DC.find(lib, "sqrtf");
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11 System.out.format("found sqrtf at: %x\n", f0);
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12
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13 long f1 = DC.find(lib, "pow");
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14 System.out.format("found pow at: %x\n", f1);
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15
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16 long vm = DC.newCallVM(4096);
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17 DC.argFloat(vm, 36.f);
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18 float r0 = DC.callFloat(vm, f0);
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19 System.out.format("sqrtf(36.f) = %f\n", r0);
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20
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21 DC.reset(vm);
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22 DC.argDouble(vm, 2.);
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23 DC.argDouble(vm, 10.);
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24 double r1 = DC.callDouble(vm, f1);
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25 System.out.format("pow(2., 10.) = %f\n", r1);
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27 // Done, cleanup.
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28 DC.freeCallVM(vm);
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29 DC.freeLibrary(lib);
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30 }
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31 }
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