Mercurial > hg > qm-dsp

view maths/nan-inf.h @ 500:8a8693f38b91

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Further notes in contributin
author Chris Cannam <cannam@all-day-breakfast.com>
date Mon, 03 Jun 2019 14:32:24 +0100
parents 701233f8ed41
children
line wrap: on
line source

#ifndef QM_DSP_NAN_INF_H
#define QM_DSP_NAN_INF_H

#define ISNAN(x) (sizeof(x) == sizeof(double) ? ISNANd(x) : ISNANf(x))
static inline int ISNANf(float x) { return x != x; }
static inline int ISNANd(double x) { return x != x; }
          
#define ISINF(x) (sizeof(x) == sizeof(double) ? ISINFd(x) : ISINFf(x))
static inline int ISINFf(float x) { return !ISNANf(x) && ISNANf(x - x); }
static inline int ISINFd(double x) { return !ISNANd(x) && ISNANd(x - x); }

#endif