Mercurial > hg > audiostuff
comparison spandsp-0.0.3/spandsp-0.0.3/src/msvc/tgmath.h @ 5:f762bf195c4b
import spandsp-0.0.3
| author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
|---|---|
| date | Fri, 25 Jun 2010 16:00:21 +0200 |
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| 4:26cd8f1ef0b1 | 5:f762bf195c4b |
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| 1 /* | |
| 2 * SpanDSP - a series of DSP components for telephony | |
| 3 * | |
| 4 * tgmath.h - a fudge for MSVC, which lacks this header | |
| 5 * | |
| 6 * Written by Steve Underwood <steveu@coppice.org> | |
| 7 * | |
| 8 * Copyright (C) 2006 Michael Jerris | |
| 9 * | |
| 10 * | |
| 11 * This file is released in the public domain. | |
| 12 * | |
| 13 */ | |
| 14 | |
| 15 #if !defined(_TGMATH_H_) | |
| 16 #define _TGMATH_H_ | |
| 17 | |
| 18 #include <math.h> | |
| 19 | |
| 20 #if !defined(M_PI) | |
| 21 /* C99 systems may not define M_PI */ | |
| 22 #define M_PI 3.14159265358979323846264338327 | |
| 23 #endif | |
| 24 | |
| 25 | |
| 26 #ifdef __cplusplus | |
| 27 extern "C" { | |
| 28 #endif | |
| 29 | |
| 30 /* A kindofa rint() for VC++ (only kindofa, because rint should be type generic, | |
| 31 and this one is purely float to int */ | |
| 32 static inline long int lrintf(float a) | |
| 33 { | |
| 34 long int i; | |
| 35 | |
| 36 __asm | |
| 37 { | |
| 38 fld a | |
| 39 fistp i | |
| 40 } | |
| 41 return i; | |
| 42 } | |
| 43 | |
| 44 static inline long int lrint(double a) | |
| 45 { | |
| 46 long int i; | |
| 47 | |
| 48 __asm | |
| 49 { | |
| 50 fld a | |
| 51 fistp i | |
| 52 } | |
| 53 return i; | |
| 54 } | |
| 55 | |
| 56 #ifdef __cplusplus | |
| 57 } | |
| 58 #endif | |
| 59 | |
| 60 #endif |