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34 lines
2.4 KiB
C
34 lines
2.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/complex.h"
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#include "libc/fmt/fmt.h"
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#include "libc/testlib/testlib.h"
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TEST(complex, test) {
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char buf[128];
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complex double z, z1;
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sprintf(buf, "I = %.1f%+.1fi", creal(_Complex_I), cimag(_Complex_I));
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EXPECT_STREQ("I = 0.0+1.0i", buf);
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z1 = _Complex_I * _Complex_I; // imaginary unit squared
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sprintf(buf, "I * I = %.1f%+.1fi", creal(z1), cimag(z1));
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EXPECT_STREQ("I * I = -1.0+0.0i", buf);
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z = 1.0 + 2.0 * _Complex_I; // usual way to form a complex number pre-C11
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sprintf(buf, "z = %.1f%+.1fi", creal(z), cimag(z));
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EXPECT_STREQ("z = 1.0+2.0i", buf);
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}
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