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Define our own constant for PI. 

M_PI is not defined in the C standard nor in POSIX, it is a
non-standard GNU extension.
This commit is contained in:
Aurelien Jacobs 2015-04-27 00:42:05 +02:00 committed by Uwe Hermann
parent ba464a1217
commit 76372c5a9c
3 changed files with 6 additions and 4 deletions
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6
src/hardware/demo/demo.c
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@ -225,7 +225,7 @@ static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate)
for (i = 0; i < num_samples; i++) {
t = (double) i / (double) sample_rate;
ag->pattern_data[i] = ag->amplitude *
sin(2 * M_PI * frequency * t);
sin(2 * PI * frequency * t);
}
ag->num_samples = num_samples;
@ -238,8 +238,8 @@ static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate)
for (i = 0; i < num_samples; i++) {
t = (double) i / (double) sample_rate;
ag->pattern_data[i] = (2 * ag->amplitude / M_PI) *
asin(sin(2 * M_PI * frequency * t));
ag->pattern_data[i] = (2 * ag->amplitude / PI) *
asin(sin(2 * PI * frequency * t));
}
ag->num_samples = num_samples;

2
src/hardware/saleae-logic16/protocol.c
View File

@ -307,7 +307,7 @@ static void make_heartbeat(uint8_t *table, int len)
len >>= 3;
for (i = 0; i < 2; i++)
for (j = 0; j < len; j++)
*table++ = sin(j * M_PI / len) * 255;
*table++ = sin(j * PI / len) * 255;
}
static int configure_led(const struct sr_dev_inst *sdi)

2
src/libsigrok-internal.h
View File

@ -156,6 +156,8 @@
((uint8_t*)(p))[2] = (uint8_t)((x)>>16); \
((uint8_t*)(p))[3] = (uint8_t)((x)>>24); } while (0)
#define PI 3.1415926535897932384626433832795
/* Portability fixes for FreeBSD. */
#ifdef __FreeBSD__
#define LIBUSB_CLASS_APPLICATION 0xfe