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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30617-dd5c93fb0e) Lines: 1467 1530 95.9 % Date: 2026-01-19 09:22:13 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296159
RgX_gtofp_bit	7029044
RgX_normalize1	35731
X2XP1	5990040
ZX_Uspensky	1313744
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5390
ZX_realroots_irred	48567
ZX_rescale2prim	2233657
ZX_sturm	6395
ZX_sturm_i	122973
ZX_sturm_irred	116578
ZX_sturmpart	1128242
ZX_to_ZiX	16447410
ZiX_sqr	99009229
_gen_nored	11196247
_gen_one	14468733
_gen_zero	325997
_intervalcmp	0
_mp_add	24658165
_mp_cmul	34753881
_mp_mul	4374401
_mp_sqr	6298037
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	536975
abs_update	8003499
abs_update_r	778533
all_roots	535874
append_clone	1613508
bkeval_single_power	5234558
check_ab	1178870
checkbound	2354867
checkvalidpol	266890
clean_roots	535919
cleanroots	231763
cmp_complex_appr	2237236
conformal_basecase	1403475
conformal_mapping	467786
conformal_pol	1403593
dblexp	6547182
dbllog2	301976887
dft	502233
dual_modulus	1012200
eval_rel_pol	13134266
fft	14154736
fft2	7462
findpower	40945161
fix_roots	536974
fix_roots1	398349
fujiwara_bound	2271034
fujiwara_bound_real	1406709
graeffe	49489274
homothetie	1609630
homothetie2n	9954393
homothetie_gauss	36487481
ind_maxlog2	902450
initdft	996076
isexactpol	239753
isexactscalar	931714
isreal	961631
isvalidcoeff	1228143
logmax_modulus	4449526
logmin_modulus	1614337
logmodulus	606547
logpre_modulus	606550
logradius	493839
lower_bound	40944789
mydbllog2i	226340127
mydbllog2r	56169099
mydbllogr	9544601
mygprec	63740374
mygprec_absolute	4337365
mygprec_special	536982
mygprecrc	215117131
mygprecrc_special	2178265
myshiftic	135759732
myshiftrc	35494953
newton_polygon	5505208
optimize_split	493845
parameters	493844
pol_to_gaussint	17583824
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166684
quicktofp	6976770
realroots	50627
refine_F	502229
refine_H	2459946
root_error	1911611
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288178
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494206
split_0_1	468148
split_0_2	468148
split_1	467786
split_2	493844
split_complete	1525388
split_fromU	493845
split_pols	166683
splitcauchy	166696
splitpoleval	5234456
tocomplex	1213164
update_radius	493844
usp	1125943

Generated by: LCOV version 1.16