Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31053-95e3b72995) Lines: 94.1 % 1561 1469 Test Date: 2026-07-24 17:03:07 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	297211
RgX_Graeffe	14
RgX_gtofp_bit	7055948
RgX_normalize1	36406
X2XP1	6001222
ZX_Uspensky	1315158
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5460
ZX_realroots_irred	48668
ZX_rescale2prim	2237764
ZX_sturm	6395
ZX_sturm_i	123562
ZX_sturm_irred	117167
ZX_sturmpart	1129062
ZX_to_ZiX	16456983
ZiX_sqr	99347600
_gen_nored	11267310
_gen_one	14523829
_gen_zero	326093
_intervalcmp	0
_mp_add	24940824
_mp_cmul	35114881
_mp_mul	4430341
_mp_sqr	6349466
_mp_sub	0
_sqrtnr	22877
a_posteriori_errors	538498
abs_update	8028364
abs_update_r	781140
all_roots	537398
append_clone	1618798
bkeval_single_power	5250075
check_ab	1179689
checkbound	2356508
checkvalidpol	268041
clean_roots	537440
cleanroots	231875
cmp_complex_appr	2249817
conformal_basecase	1407539
conformal_mapping	469140
conformal_pol	1407658
dblexp	6569354
dbllog2	304779911
dft	503707
dual_modulus	1015232
eval_rel_pol	13181285
fft	14225289
fft2	7462
findpower	41064012
fix_roots	538498
fix_roots1	398950
fujiwara_bound	2276778
fujiwara_bound_real	1408270
graeffe	49673800
homothetie	1614920
homothetie2n	9987700
homothetie_gauss	36602869
ind_maxlog2	904878
initdft	998975
isexactpol	240229
isexactscalar	934563
isreal	964408
isvalidcoeff	1235239
logmax_modulus	4461143
logmin_modulus	1618151
logmodulus	608815
logpre_modulus	608815
logradius	495268
lower_bound	41064012
mydbllog2i	227083849
mydbllog2r	58108454
mydbllogr	9574045
mygprec	63975823
mygprec_absolute	4356161
mygprec_special	538498
mygprecrc	215731251
mygprecrc_special	2185066
myshiftic	136510203
myshiftrc	35615519
newton_polygon	5526557
optimize_split	495268
parameters	495268
pol_to_gaussint	17642428
polgraeffe	0
polgraeffe0	14
polmod_to_embed	84
polrootsbound	27805
polrootsbound_i	27798
polsolve	166980
quicktofp	7000077
realroots	50627
refine_F	503707
refine_H	2465974
root_error	1919273
roots	8382
roots_aux	240257
roots_com	240229
rootsdeg0	42
scalepol	4300644
scalepol2n	0
sol_ok	3378
solve_exact_pol	231621
split_0	495640
split_0_1	469512
split_0_2	469512
split_1	469140
split_2	495268
split_complete	1529778
split_fromU	495268
split_pols	166980
splitcauchy	166980
splitpoleval	5250075
tocomplex	1219401
update_radius	495268
usp	1127968

Generated by: LCOV version 2.0-1