1/*-
2 * Copyright (c) 2011 David Schultz <das@FreeBSD.ORG>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
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20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/lib/msun/src/s_cexpf.c 219359 2011-03-07 03:09:24Z das $");
29
30#include <complex.h>
31#include <math.h>
32
33#include "math_private.h"
34
35static const uint32_t
36exp_ovfl = 0x42b17218, /* MAX_EXP * ln2 ~= 88.722839355 */
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52
53 GET_FLOAT_WORD(hy, y);
54 hy &= 0x7fffffff;
55
56 /* cexp(x + I 0) = exp(x) + I 0 */
57 if (hy == 0)
58 return (cpackf(expf(x), y));
59 GET_FLOAT_WORD(hx, x);
60 if (hy >= 0x7f800000) {
61 if ((hx & 0x7fffffff) != 0x7f800000) {
62 /* cexp(finite|NaN +- I Inf|NaN) = NaN + I NaN */
63 return (cpackf(y - y, y - y));
64 } else if (hx & 0x80000000) {
65 /* cexp(-Inf +- I Inf|NaN) = 0 + I 0 */
66 return (cpackf(0.0, 0.0));
67 } else {
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2 * Copyright (c) 2011 David Schultz <das@FreeBSD.ORG>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
--- 11 unchanged lines hidden (view full) ---
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/lib/msun/src/s_cexpf.c 219359 2011-03-07 03:09:24Z das $");
29
30#include <complex.h>
31#include <math.h>
32
33#include "math_private.h"
34
35static const uint32_t
36exp_ovfl = 0x42b17218, /* MAX_EXP * ln2 ~= 88.722839355 */
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52
53 GET_FLOAT_WORD(hy, y);
54 hy &= 0x7fffffff;
55
56 /* cexp(x + I 0) = exp(x) + I 0 */
57 if (hy == 0)
58 return (cpackf(expf(x), y));
59 GET_FLOAT_WORD(hx, x);
60 if (hy >= 0x7f800000) {
61 if ((hx & 0x7fffffff) != 0x7f800000) {
62 /* cexp(finite|NaN +- I Inf|NaN) = NaN + I NaN */
63 return (cpackf(y - y, y - y));
64 } else if (hx & 0x80000000) {
65 /* cexp(-Inf +- I Inf|NaN) = 0 + I 0 */
66 return (cpackf(0.0, 0.0));
67 } else {
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