918e70fe8e
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5269 42af7a65-404d-4744-a932-0658087f49c3
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
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* Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* 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 WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <apps/math.h>
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#include <float.h>
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#include <stdint.h>
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float modff(float x, float *iptr) {
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if (fabsf(x) >= 8388608.0) {
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*iptr = x;
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return 0.0;
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}
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else if (fabs(x) < 1.0) {
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*iptr = 0.0;
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return x;
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}
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else {
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*iptr = (float) (int) x;
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return (x - *iptr);
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}
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}
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double modf(double x, double *iptr) {
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if (fabs(x) >= 4503599627370496.0) {
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*iptr = x;
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return 0.0;
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}
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else if (fabs(x) < 1.0) {
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*iptr = 0.0;
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return x;
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}
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else {
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*iptr = (double) (int64_t) x;
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return (x - *iptr);
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}
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}
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long double modfl(long double x, long double *iptr) {
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if (fabs(x) >= 4503599627370496.0) {
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*iptr = x;
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return 0.0;
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}
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else if (fabs(x) < 1.0) {
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*iptr = 0.0;
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return x;
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}
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else {
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*iptr = (long double) (int64_t) x;
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return (x - *iptr);
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}
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}
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